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Liverpool Bay 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Liverpool Bay

Northwest Territories, Canada

Long range weather outlook for Liverpool Bay includes 14 day forecast summary:

Reviewing the forecast for Liverpool Bay Over the next 14 days and the average daytime maximum temperature will be around 0°C, with a high for the two weeks of 4°C expected on the afternoon of Wednesday 8th. The average minimum temperature will be -5°C, dipping to its lowest on the morning of Sunday 5th at -13°C. The next 14 days will have some days seeing a little precipitation and some days with rain, sleet or snow. The indicators are that Wednesday 8th will have the most precipitation with an accumulation of around 8.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 05
May
12:00

N
N

10 / 17 mph 14 / 1°F 92% 1008 mb
Low level cloud: 93%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

N
N

11 / 13 mph 20 / 9°F 89% 1008 mb
Low level cloud: 84%
Mid level cloud: 25%
High level cloud: 19%
Most Significant Cloud Type: low
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

10 / 11 mph 23 / 12°F 89% 1008 mb
Low level cloud: 92%
Mid level cloud: 43%
High level cloud: 4%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

N
N

9 / 11 mph 24 / 14°F 93% 1008 mb
Low level cloud: 97%
Mid level cloud: 19%
High level cloud: 20%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 06
May
00:00

N
N

8 / 14 mph 20 / 10°F 95% 1008 mb
Low level cloud: 97%
Mid level cloud: 26%
High level cloud: 46%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

7 / 12 mph 21 / 12°F 96% 1008 mb
Low level cloud: 100%
Mid level cloud: 23%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNW
NNW

7 / 12 mph 22 / 13°F 96% 1008 mb
Low level cloud: 99%
Mid level cloud: 17%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

N
N

8 / 13 mph 22 / 13°F 95% 1008 mb
Low level cloud: 100%
Mid level cloud: 14%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNW
NNW

9 / 14 mph 24 / 14°F 93% 1009 mb
Low level cloud: 94%
Mid level cloud: 21%
High level cloud: 54%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNW
NNW

9 / 14 mph 26 / 17°F 92% 1010 mb
Low level cloud: 99%
Mid level cloud: 46%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNW
NNW

8 / 13 mph 28 / 19°F 91% 1010 mb
Low level cloud: 82%
Mid level cloud: 19%
High level cloud: 18%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNW
NNW

7 / 11 mph 28 / 21°F 92% 1011 mb
Low level cloud: 96%
Mid level cloud: 8%
High level cloud: 5%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 07
May
00:00

NW
NW

6 / 10 mph 28 / 22°F 96% 1012 mb
Low level cloud: 99%
Mid level cloud: 5%
High level cloud: 4%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

6 / 9 mph 27 / 20°F 96% 1012 mb
Low level cloud: 91%
Mid level cloud: 4%
High level cloud: 13%
Most Significant Cloud Type: low
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

N
N

6 / 10 mph 25 / 19°F 96% 1013 mb
Low level cloud: 99%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

N
N

5 / 6 mph 29 / 24°F 95% 1013 mb
Low level cloud: 95%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

6 / 7 mph 32 / 26°F 95% 1013 mb
Low level cloud: 97%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

7 / 9 mph 34 / 28°F 99% 1013 mb
Low level cloud: 99%
Mid level cloud: 3%
High level cloud: 22%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

9 / 13 mph 32 / 25°F 100% 1013 mb
Low level cloud: 97%
Mid level cloud: 7%
High level cloud: 57%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNE
NNE

9 / 17 mph 30 / 22°F 99% 1012 mb
Low level cloud: 94%
Mid level cloud: 10%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 08
May
00:00

NE
NE

10 / 16 mph 32 / 23°F 98% 1011 mb
Low level cloud: 95%
Mid level cloud: 13%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NE
NE

14 / 25 mph 29 / 19°F 98% 1010 mb
Low level cloud: 94%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NE
NE

15 / 28 mph 28 / 16°F 96% 1007 mb
Low level cloud: 44%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

15 / 19 mph 32 / 22°F 95% 1006 mb
Low level cloud: 46%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

16 / 19 mph 36 / 27°F 96% 1004 mb
Low level cloud: 78%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

ENE
ENE

15 / 18 mph 39 / 30°F 99% 1002 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

ESE
ESE

6 / 7 mph 36 / 31°F 100% 1002 mb
Low level cloud: 98%
Mid level cloud: 100%
High level cloud: 70%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

SSW
SSW

5 / 7 mph 33 / 28°F 99% 1002 mb
Low level cloud: 93%
Mid level cloud: 100%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Thu 09
May
00:00

NNW
NNW

7 / 14 mph 28 / 20°F 98% 1002 mb
Low level cloud: 95%
Mid level cloud: 55%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NW
NW

12 / 25 mph 26 / 15°F 98% 1004 mb
Low level cloud: 92%
Mid level cloud: 58%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NW
NW

21 / 43 mph 24 / 9°F 97% 1007 mb
Low level cloud: 95%
Mid level cloud: 53%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

NW
NW

18 / 21 mph 28 / 15°F 95% 1011 mb
Low level cloud: 100%
Mid level cloud: 9%
High level cloud: 4%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NW
NW

15 / 17 mph 32 / 22°F 91% 1015 mb
Low level cloud: 99%
Mid level cloud: 99%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NW
NW

11 / 13 mph 34 / 25°F 88% 1017 mb
Low level cloud: 99%
Mid level cloud: 25%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNW
NNW

7 / 9 mph 32 / 25°F 87% 1018 mb
Low level cloud: 94%
Mid level cloud: 28%
High level cloud: 14%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

3 / 5 mph 29 / 26°F 88% 1018 mb
Low level cloud: 98%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 10
May
00:00

SW
SW

2 / 4 mph 27 / 25°F 96% 1018 mb
Low level cloud: 99%
Mid level cloud: 12%
High level cloud: 7%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

5 / 9 mph 25 / 20°F 96% 1018 mb
Low level cloud: 99%
Mid level cloud: 17%
High level cloud: 20%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

5 / 9 mph 24 / 18°F 96% 1018 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 67%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

4 / 6 mph 28 / 22°F 93% 1017 mb
Low level cloud: 87%
Mid level cloud: 11%
High level cloud: 11%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ESE
ESE

4 / 5 mph 31 / 27°F 88% 1017 mb
Low level cloud: 95%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

5 / 6 mph 33 / 28°F 88% 1016 mb
Low level cloud: 93%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

7 / 9 mph 31 / 25°F 87% 1015 mb
Low level cloud: 65%
Mid level cloud: 64%
High level cloud: 0%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNE
NNE

6 / 11 mph 28 / 22°F 91% 1015 mb
Low level cloud: 98%
Mid level cloud: 98%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 11
May
00:00

N
N

7 / 12 mph 27 / 20°F 96% 1015 mb
Low level cloud: 96%
Mid level cloud: 46%
High level cloud: 7%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

7 / 12 mph 27 / 19°F 97% 1016 mb
Low level cloud: 93%
Mid level cloud: 62%
High level cloud: 11%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNW
NNW

7 / 12 mph 26 / 18°F 97% 1017 mb
Low level cloud: 77%
Mid level cloud: 100%
High level cloud: 20%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNW
NNW

7 / 12 mph 28 / 20°F 96% 1018 mb
Low level cloud: 79%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

N
N

6 / 9 mph 29 / 23°F 93% 1019 mb
Low level cloud: 84%
Mid level cloud: 85%
High level cloud: 85%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNW
NNW

4 / 6 mph 30 / 26°F 94% 1020 mb
Low level cloud: 78%
Mid level cloud: 93%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNW
NNW

3 / 5 mph 29 / 26°F 96% 1021 mb
Low level cloud: 83%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

N
N

2 / 4 mph 28 / 26°F 97% 1022 mb
Low level cloud: 81%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 12
May
00:00

WNW
WNW

6 / 7 mph 29 / 23°F 94% 1026 mb
Low level cloud: 100%
Mid level cloud: 44%
High level cloud: 17%
Most Significant Cloud Type: low
100%
0.0 In
06:00

ESE
ESE

4 / 10 mph 9 / 0°F 99% 1009 mb
Low level cloud: 39%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
46%
0.0 In
12:00

W
W

9 / 15 mph 20 / 9°F 93% 1015 mb
Low level cloud: 64%
Mid level cloud: 17%
High level cloud: 87%
Most Significant Cloud Type: low
80%
0.0 In
18:00

NW
NW

2 / 2 mph 30 / 30°F 84% 1029 mb
Low level cloud: 66%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
66%
0.0 In
Mon 13
May
00:00

ENE
ENE

3 / 7 mph 27 / 23°F 91% 1028 mb
Low level cloud: 100%
Mid level cloud: 24%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.0 In
06:00

ENE
ENE

3 / 6 mph 20 / 16°F 88% 1013 mb
Low level cloud: 55%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
60%
0.0 In
12:00

ESE
ESE

4 / 4 mph 31 / 27°F 90% 1021 mb
Low level cloud: 62%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
18:00

NE
NE

11 / 17 mph 28 / 19°F 86% 1011 mb
Low level cloud: 7%
Mid level cloud: 58%
High level cloud: 28%
Most Significant Cloud Type: medium
77%
0.0 In
Tue 14
May
00:00

ENE
ENE

11 / 14 mph 30 / 21°F 93% 1021 mb
Low level cloud: 75%
Mid level cloud: 25%
High level cloud: 47%
Most Significant Cloud Type: low
89%
0.0 In
06:00

NE
NE

11 / 21 mph 23 / 12°F 93% 1012 mb
Low level cloud: 20%
Mid level cloud: 100%
High level cloud: 21%
Most Significant Cloud Type: medium
100%
0.0 In
12:00

ENE
ENE

10 / 13 mph 29 / 20°F 91% 1019 mb
Low level cloud: 21%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.0 In
18:00

NE
NE

15 / 26 mph 28 / 17°F 86% 1016 mb
Low level cloud: 100%
Mid level cloud: 27%
High level cloud: 20%
Most Significant Cloud Type: low
100%
0.0 In
Wed 15
May
00:00

ENE
ENE

11 / 16 mph 33 / 25°F 91% 1015 mb
Low level cloud: 16%
Mid level cloud: 21%
High level cloud: 100%
Most Significant Cloud Type: low
35%
0.0 In
06:00

NE
NE

12 / 23 mph 20 / 8°F 94% 1018 mb
Low level cloud: 16%
Mid level cloud: 20%
High level cloud: 100%
Most Significant Cloud Type: low
34%
0.0 In
12:00

E
E

11 / 13 mph 39 / 32°F 94% 1010 mb
Low level cloud: 29%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
18:00

NE
NE

14 / 21 mph 30 / 19°F 84% 1021 mb
Low level cloud: 2%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
Thu 16
May
00:00

NNE
NNE

6 / 13 mph 32 / 26°F 96% 1006 mb
Low level cloud: 18%
Mid level cloud: 82%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
06:00

NE
NE

8 / 14 mph 25 / 17°F 94% 1023 mb
Low level cloud: 17%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
12:00

NNE
NNE

6 / 8 mph 36 / 30°F 99% 1006 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
18:00

ENE
ENE

7 / 11 mph 31 / 24°F 89% 1021 mb
Low level cloud: 8%
Mid level cloud: 44%
High level cloud: 34%
Most Significant Cloud Type: medium
66%
0.0 In
Fri 17
May
00:00

N
N

6 / 13 mph 26 / 19°F 98% 1009 mb
Low level cloud: 86%
Mid level cloud: 67%
High level cloud: 7%
Most Significant Cloud Type: low
100%
0.1 In
06:00

E
E

5 / 11 mph 20 / 13°F 97% 1014 mb
Low level cloud: 28%
Mid level cloud: 89%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
12:00

N
N

7 / 11 mph 30 / 23°F 89% 1013 mb
Low level cloud: 96%
Mid level cloud: 31%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.0 In
18:00

NE
NE

7 / 8 mph 38 / 33°F 91% 1008 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 9%
Most Significant Cloud Type: medium
4%
0.0 In
Sat 18
May
00:00

NNW
NNW

5 / 11 mph 27 / 20°F 93% 1018 mb
Low level cloud: 100%
Mid level cloud: 44%
High level cloud: 16%
Most Significant Cloud Type: low
100%
0.0 In
06:00

NNW
NNW

7 / 15 mph 24 / 15°F 98% 1011 mb
Low level cloud: 57%
Mid level cloud: 6%
High level cloud: 33%
Most Significant Cloud Type: low
62%
0.0 In
12:00

NW
NW

7 / 10 mph 28 / 21°F 80% 1026 mb
Low level cloud: 99%
Mid level cloud: 71%
High level cloud: 19%
Most Significant Cloud Type: low
100%
0.0 In
18:00

NW
NW

8 / 14 mph 30 / 22°F 84% 1019 mb
Low level cloud: 93%
Mid level cloud: 1%
High level cloud: 13%
Most Significant Cloud Type: low
94%
0.0 In
Sun 19
May
00:00

NW
NW

4 / 9 mph 22 / 17°F 91% 1031 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.0 In
06:00

WNW
WNW

2 / 4 mph 28 / 26°F 83% 1023 mb
Low level cloud: 100%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
12:00

E
E

4 / 7 mph 24 / 19°F 85% 1033 mb
Low level cloud: 1%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.0 In
18:00

ENE
ENE

4 / 6 mph 31 / 26°F 88% 1024 mb
Low level cloud: 14%
Mid level cloud: 16%
High level cloud: 12%
Most Significant Cloud Type: low
21%
0.0 In
Mon 20
May
00:00

E
E

14 / 29 mph 23 / 11°F 82% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 27%
Most Significant Cloud Type: high
27%
0.0 In
06:00

NE
NE

7 / 14 mph 22 / 13°F 95% 1022 mb
Low level cloud: 6%
Mid level cloud: 23%
High level cloud: 32%
Most Significant Cloud Type: medium
40%
0.0 In
12:00

E
E

13 / 16 mph 42 / 35°F 82% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 21%
Most Significant Cloud Type: high
20%
0.0 In
18:00

NNE
NNE

6 / 7 mph 36 / 31°F 91% 1020 mb
Low level cloud: 3%
Mid level cloud: 4%
High level cloud: 39%
Most Significant Cloud Type: medium
15%
0.0 In

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
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Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
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Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
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Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
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Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
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Pressure