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Merrimack River Lawrence Dam 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Merrimack River Lawrence Dam

Massachusetts, United States Of America

Long range weather outlook for Merrimack River Lawrence Dam includes 14 day forecast summary:

The outlook for Merrimack River Lawrence Dam in the two weeks ahead shows the average daytime maximum temperature will be around 3°C, with a high for the two weeks of 15°C expected on the afternoon of Friday 19th. The mean minimum temperature will be -3°C, dipping to its lowest on the morning of Sunday 28th at -5°C. The fortnight ahead will have some days seeing a little precipitation and some days with rain, sleet or snow. Current predictions suggest Friday 26th will have the most precipitation with an accumulation of around 14.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 19
Dec
16:00

W
W

9 / 13 mph 44 / 38°F 85% 990 mb
Low level cloud: 10%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: medium
61%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

W
W

13 / 19 mph 40 / 32°F 77% 994 mb
Low level cloud: 15%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

16 / 23 mph 32 / 22°F 64% 1000 mb
Low level cloud: 0%
Mid level cloud: 48%
High level cloud: 0%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 20
Dec
01:00

W
W

17 / 24 mph 29 / 17°F 56% 1004 mb
Low level cloud: 2%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

W
W

18 / 24 mph 29 / 17°F 54% 1010 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

12 / 14 mph 29 / 19°F 50% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

W
W

9 / 10 mph 33 / 25°F 40% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

9 / 11 mph 38 / 31°F 35% 1019 mb
Low level cloud: 0%
Mid level cloud: 87%
High level cloud: 100%
Most Significant Cloud Type: medium
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

6 / 9 mph 35 / 30°F 45% 1019 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 90%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSW
SSW

7 / 11 mph 35 / 28°F 56% 1018 mb
Low level cloud: 0%
Mid level cloud: 54%
High level cloud: 64%
Most Significant Cloud Type: medium
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

12 / 18 mph 35 / 26°F 55% 1015 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 33%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 21
Dec
01:00

SW
SW

13 / 21 mph 36 / 27°F 62% 1012 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 18%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

12 / 20 mph 37 / 29°F 64% 1010 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 87%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

10 / 15 mph 36 / 29°F 66% 1011 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

W
W

13 / 17 mph 41 / 33°F 55% 1012 mb
Low level cloud: 25%
Mid level cloud: 0%
High level cloud: 36%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

13 / 14 mph 38 / 29°F 47% 1013 mb
Low level cloud: 20%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

11 / 16 mph 33 / 24°F 52% 1016 mb
Low level cloud: 34%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

11 / 14 mph 31 / 22°F 57% 1018 mb
Low level cloud: 6%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WNW
WNW

11 / 15 mph 30 / 21°F 56% 1019 mb
Low level cloud: 9%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 22
Dec
01:00

NW
NW

11 / 15 mph 28 / 18°F 59% 1021 mb
Low level cloud: 56%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NW
NW

13 / 15 mph 26 / 15°F 49% 1024 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

11 / 14 mph 25 / 14°F 46% 1027 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

12 / 14 mph 28 / 17°F 37% 1029 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

12 / 13 mph 32 / 23°F 35% 1028 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 5%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

7 / 9 mph 32 / 25°F 46% 1028 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 8%
Most Significant Cloud Type: high
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

5 / 8 mph 28 / 22°F 63% 1029 mb
Low level cloud: 77%
Mid level cloud: 2%
High level cloud: 3%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NW
NW

2 / 4 mph 28 / 26°F 72% 1030 mb
Low level cloud: 38%
Mid level cloud: 4%
High level cloud: 72%
Most Significant Cloud Type: low
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 23
Dec
01:00

E
E

0 / 0 mph 29 / 29°F 68% 1030 mb
Low level cloud: 0%
Mid level cloud: 75%
High level cloud: 32%
Most Significant Cloud Type: medium
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

3 / 4 mph 29 / 26°F 68% 1029 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 95%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

5 / 7 mph 28 / 22°F 93% 1028 mb
Low level cloud: 70%
Mid level cloud: 100%
High level cloud: 79%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSE
SSE

7 / 9 mph 31 / 25°F 93% 1025 mb
Low level cloud: 77%
Mid level cloud: 60%
High level cloud: 84%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
13:00

SSE
SSE

8 / 11 mph 35 / 28°F 97% 1018 mb
Low level cloud: 93%
Mid level cloud: 45%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

SSW
SSW

8 / 12 mph 35 / 29°F 98% 1014 mb
Low level cloud: 96%
Mid level cloud: 71%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

WSW
WSW

8 / 13 mph 33 / 26°F 97% 1012 mb
Low level cloud: 97%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

8 / 17 mph 31 / 23°F 89% 1011 mb
Low level cloud: 89%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 24
Dec
01:00

WNW
WNW

11 / 18 mph 35 / 27°F 78% 1012 mb
Low level cloud: 5%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

10 / 15 mph 33 / 25°F 80% 1015 mb
Low level cloud: 4%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NW
NW

12 / 18 mph 31 / 21°F 72% 1019 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

11 / 14 mph 35 / 26°F 67% 1022 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NW
NW

11 / 13 mph 38 / 30°F 66% 1022 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NW
NW

7 / 12 mph 34 / 28°F 75% 1025 mb
Low level cloud: 9%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

5 / 7 mph 33 / 28°F 85% 1027 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

5 / 9 mph 28 / 22°F 85% 1028 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 25
Dec
01:00

WNW
WNW

3 / 6 mph 27 / 23°F 88% 1027 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 99%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

2 / 4 mph 28 / 26°F 87% 1026 mb
Low level cloud: 0%
Mid level cloud: 87%
High level cloud: 100%
Most Significant Cloud Type: medium
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

4 / 7 mph 28 / 24°F 89% 1025 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 33%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

W
W

7 / 9 mph 35 / 29°F 67% 1024 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

6 / 7 mph 40 / 36°F 58% 1021 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 12%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

4 / 6 mph 36 / 33°F 85% 1022 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 1%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

7 / 14 mph 32 / 25°F 77% 1024 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 15%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

3 / 5 mph 31 / 29°F 86% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 26
Dec
01:00

N
N

5 / 6 mph 33 / 29°F 83% 1015 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 100%
Most Significant Cloud Type: medium
25%
0.0 In
07:00

ENE
ENE

4 / 6 mph 30 / 26°F 75% 1016 mb
Low level cloud: 92%
Mid level cloud: 46%
High level cloud: 7%
Most Significant Cloud Type: low
100%
0.0 In
13:00

ENE
ENE

3 / 4 mph 34 / 31°F 97% 1009 mb
Low level cloud: 92%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
19:00

WNW
WNW

11 / 19 mph 44 / 38°F 83% 1008 mb
Low level cloud: 79%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
80%
0.0 In
Sat 27
Dec
01:00

ESE
ESE

1 / 2 mph 38 / 38°F 97% 1009 mb
Low level cloud: 74%
Mid level cloud: 80%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
07:00

WNW
WNW

4 / 6 mph 37 / 34°F 90% 1016 mb
Low level cloud: 7%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
7%
0.0 In
13:00

NW
NW

5 / 7 mph 37 / 33°F 74% 1008 mb
Low level cloud: 1%
Mid level cloud: 94%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
19:00

NW
NW

11 / 15 mph 25 / 15°F 65% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
5%
0.0 In
Sun 28
Dec
01:00

NNW
NNW

6 / 11 mph 25 / 18°F 91% 1008 mb
Low level cloud: 66%
Mid level cloud: 57%
High level cloud: 19%
Most Significant Cloud Type: low
88%
0.3 In
07:00

NW
NW

10 / 14 mph 24 / 13°F 60% 1028 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
13:00

NW
NW

13 / 17 mph 28 / 18°F 65% 1014 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
3%
0.0 In
19:00

NW
NW

11 / 16 mph 26 / 17°F 57% 1028 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
Mon 29
Dec
01:00

NW
NW

10 / 13 mph 16 / 4°F 68% 1019 mb
Low level cloud: 34%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
34%
0.0 In
07:00

WNW
WNW

4 / 5 mph 29 / 25°F 55% 1027 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
13:00

WNW
WNW

12 / 16 mph 22 / 10°F 47% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 15%
Most Significant Cloud Type: high
14%
0.0 In
19:00

WNW
WNW

5 / 6 mph 32 / 28°F 66% 1023 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 32%
Most Significant Cloud Type: high
31%
0.0 In
Tue 30
Dec
01:00

WSW
WSW

4 / 5 mph 24 / 20°F 79% 1023 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 2%
Most Significant Cloud Type: medium
12%
0.0 In
07:00

N
N

2 / 3 mph 30 / 28°F 63% 1023 mb
Low level cloud: 0%
Mid level cloud: 77%
High level cloud: 100%
Most Significant Cloud Type: medium
81%
0.0 In
13:00

SW
SW

7 / 9 mph 37 / 32°F 70% 1021 mb
Low level cloud: 0%
Mid level cloud: 53%
High level cloud: 99%
Most Significant Cloud Type: medium
56%
0.0 In
19:00

NNW
NNW

2 / 3 mph 41 / 41°F 76% 1022 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 74%
Most Significant Cloud Type: medium
17%
0.0 In
Wed 31
Dec
01:00

ENE
ENE

5 / 8 mph 36 / 32°F 100% 1015 mb
Low level cloud: 100%
Mid level cloud: 88%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.5 In
07:00

NNE
NNE

4 / 7 mph 32 / 28°F 87% 1019 mb
Low level cloud: 96%
Mid level cloud: 91%
High level cloud: 59%
Most Significant Cloud Type: low
100%
0.0 In
13:00

N
N

12 / 15 mph 29 / 19°F 91% 1007 mb
Low level cloud: 100%
Mid level cloud: 15%
High level cloud: 51%
Most Significant Cloud Type: low
100%
0.4 In
19:00

NNE
NNE

9 / 15 mph 36 / 29°F 97% 1012 mb
Low level cloud: 97%
Mid level cloud: 89%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.5 In
Thu 01
Jan
01:00

N
N

2 / 3 mph 29 / 27°F 91% 1013 mb
Low level cloud: 89%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
07:00

NNE
NNE

4 / 5 mph 32 / 29°F 92% 1009 mb
Low level cloud: 98%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.4 In
13:00

N
N

6 / 7 mph 33 / 28°F 81% 1019 mb
Low level cloud: 100%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
19:00

SW
SW

2 / 3 mph 35 / 33°F 98% 1008 mb
Low level cloud: 94%
Mid level cloud: 50%
High level cloud: 6%
Most Significant Cloud Type: low
100%
0.1 In
Fri 02
Jan
01:00

NW
NW

2 / 3 mph 34 / 33°F 91% 1023 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 33%
Most Significant Cloud Type: medium
7%
0.0 In
07:00

WNW
WNW

9 / 12 mph 30 / 22°F 81% 1009 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
0.0 In
13:00

S
S

7 / 11 mph 32 / 25°F 98% 1010 mb
Low level cloud: 95%
Mid level cloud: 69%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
19:00

WSW
WSW

6 / 7 mph 39 / 34°F 90% 1010 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: medium
16%
0.0 In
Sat 03
Jan
01:00

W
W

13 / 21 mph 31 / 22°F 77% 1004 mb
Low level cloud: 48%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
50%
0.1 In
07:00

WSW
WSW

7 / 9 mph 31 / 25°F 87% 1008 mb
Low level cloud: 3%
Mid level cloud: 15%
High level cloud: 20%
Most Significant Cloud Type: medium
23%
0.0 In
13:00

WNW
WNW

14 / 19 mph 24 / 12°F 71% 1009 mb
Low level cloud: 67%
Mid level cloud: 6%
High level cloud: 1%
Most Significant Cloud Type: low
69%
0.0 In
19:00

ESE
ESE

4 / 6 mph 35 / 31°F 94% 1001 mb
Low level cloud: 63%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
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