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Blaine 14 Day Long Range Forecast

14 Day weather providing an extended long range forecast outlook for Blaine

Washington, United States Of America

Long range weather outlook for Blaine includes 14 day forecast summary:

For Blaine in the coming two weeks the average daytime maximum temperature will be around 14°C, with a high for the two weeks of 18°C expected on the afternoon of Sunday 26th. The average minimum temperature will be 8°C, dipping to its lowest on the morning of Monday 20th at 5°C. The coming 14 days will have some days seeing a little precipitation and some days with rain. Predictions are Tuesday 21st will have the most precipitation with an accumulation of around 15.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 17
May
13:00

SSW
SSW

8 / 9 mph 55 / 52°F 57% 1020 mb
Low level cloud: 17%
Mid level cloud: 91%
High level cloud: 31%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

15 / 17 mph 58 / 53°F 57% 1019 mb
Low level cloud: 26%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

S
S

8 / 10 mph 53 / 51°F 70% 1017 mb
Low level cloud: 0%
Mid level cloud: 96%
High level cloud: 0%
Most Significant Cloud Type: medium
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ESE
ESE

6 / 9 mph 50 / 47°F 80% 1017 mb
Low level cloud: 4%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 18
May
01:00

S
S

6 / 10 mph 49 / 46°F 78% 1017 mb
Low level cloud: 75%
Mid level cloud: 82%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSW
SSW

8 / 11 mph 49 / 45°F 79% 1017 mb
Low level cloud: 99%
Mid level cloud: 80%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

10 / 14 mph 49 / 45°F 74% 1018 mb
Low level cloud: 90%
Mid level cloud: 47%
High level cloud: 10%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

5 / 7 mph 54 / 50°F 69% 1018 mb
Low level cloud: 28%
Mid level cloud: 63%
High level cloud: 5%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

2 / 3 mph 53 / 53°F 69% 1018 mb
Low level cloud: 70%
Mid level cloud: 51%
High level cloud: 77%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NW
NW

4 / 5 mph 54 / 52°F 79% 1017 mb
Low level cloud: 45%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

4 / 5 mph 52 / 49°F 83% 1017 mb
Low level cloud: 9%
Mid level cloud: 19%
High level cloud: 7%
Most Significant Cloud Type: low
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

2 / 4 mph 44 / 44°F 86% 1019 mb
Low level cloud: 54%
Mid level cloud: 46%
High level cloud: 12%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
May
01:00

E
E

3 / 6 mph 43 / 42°F 90% 1020 mb
Low level cloud: 69%
Mid level cloud: 52%
High level cloud: 7%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

E
E

2 / 4 mph 44 / 43°F 92% 1021 mb
Low level cloud: 29%
Mid level cloud: 86%
High level cloud: 4%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ESE
ESE

2 / 3 mph 47 / 47°F 88% 1023 mb
Low level cloud: 67%
Mid level cloud: 97%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

5 / 6 mph 53 / 51°F 73% 1023 mb
Low level cloud: 82%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

5 / 6 mph 58 / 55°F 61% 1024 mb
Low level cloud: 3%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: medium
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

6 / 7 mph 58 / 55°F 57% 1024 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSW
SSW

3 / 4 mph 55 / 53°F 71% 1024 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ESE
ESE

3 / 5 mph 47 / 47°F 80% 1024 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May
01:00

E
E

3 / 7 mph 44 / 42°F 85% 1024 mb
Low level cloud: 4%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: medium
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ENE
ENE

2 / 4 mph 42 / 42°F 86% 1024 mb
Low level cloud: 15%
Mid level cloud: 25%
High level cloud: 9%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

E
E

1 / 1 mph 51 / 50°F 69% 1025 mb
Low level cloud: 2%
Mid level cloud: 11%
High level cloud: 10%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

6 / 7 mph 56 / 53°F 66% 1024 mb
Low level cloud: 8%
Mid level cloud: 5%
High level cloud: 12%
Most Significant Cloud Type: low
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

6 / 7 mph 59 / 57°F 59% 1022 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 6%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

6 / 7 mph 60 / 58°F 54% 1020 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 32%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSE
SSE

5 / 8 mph 57 / 55°F 74% 1019 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 100%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

E
E

6 / 12 mph 49 / 47°F 80% 1018 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 100%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May
01:00

SE
SE

9 / 15 mph 49 / 45°F 77% 1018 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

S
S

11 / 16 mph 51 / 47°F 84% 1017 mb
Low level cloud: 63%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

11 / 15 mph 48 / 43°F 96% 1017 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 15%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
10:00

SE
SE

8 / 11 mph 48 / 45°F 97% 1016 mb
Low level cloud: 100%
Mid level cloud: 97%
High level cloud: 11%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
13:00

ESE
ESE

5 / 6 mph 49 / 47°F 97% 1015 mb
Low level cloud: 100%
Mid level cloud: 97%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
16:00

SE
SE

5 / 7 mph 50 / 48°F 97% 1014 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 17%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
19:00

S
S

4 / 6 mph 50 / 49°F 98% 1014 mb
Low level cloud: 99%
Mid level cloud: 94%
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

S
S

7 / 10 mph 50 / 47°F 97% 1013 mb
Low level cloud: 89%
Mid level cloud: 57%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Wed 22
May
01:00

SSE
SSE

8 / 11 mph 50 / 46°F 95% 1012 mb
Low level cloud: 91%
Mid level cloud: 91%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

W
W

12 / 17 mph 48 / 43°F 93% 1012 mb
Low level cloud: 90%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SE
SE

4 / 6 mph 48 / 47°F 85% 1013 mb
Low level cloud: 18%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

9 / 10 mph 52 / 48°F 67% 1014 mb
Low level cloud: 82%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
90%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

8 / 9 mph 52 / 49°F 67% 1015 mb
Low level cloud: 14%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

5 / 6 mph 54 / 51°F 63% 1014 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 5%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SW
SW

1 / 2 mph 54 / 51°F 70% 1014 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 10%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSE
SSE

2 / 5 mph 45 / 45°F 79% 1015 mb
Low level cloud: 2%
Mid level cloud: 90%
High level cloud: 11%
Most Significant Cloud Type: medium
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 23
May
01:00

SE
SE

2 / 4 mph 46 / 46°F 78% 1016 mb
Low level cloud: 38%
Mid level cloud: 45%
High level cloud: 11%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ESE
ESE

3 / 6 mph 45 / 44°F 84% 1015 mb
Low level cloud: 80%
Mid level cloud: 99%
High level cloud: 72%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSE
SSE

4 / 5 mph 51 / 49°F 72% 1015 mb
Low level cloud: 97%
Mid level cloud: 44%
High level cloud: 93%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

7 / 8 mph 56 / 53°F 64% 1015 mb
Low level cloud: 56%
Mid level cloud: 46%
High level cloud: 18%
Most Significant Cloud Type: low
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

S
S

10 / 11 mph 58 / 55°F 59% 1015 mb
Low level cloud: 25%
Mid level cloud: 46%
High level cloud: 49%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

S
S

11 / 12 mph 58 / 55°F 61% 1014 mb
Low level cloud: 9%
Mid level cloud: 36%
High level cloud: 0%
Most Significant Cloud Type: medium
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSE
SSE

11 / 15 mph 54 / 49°F 74% 1015 mb
Low level cloud: 38%
Mid level cloud: 81%
High level cloud: 0%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSE
SSE

10 / 15 mph 51 / 48°F 74% 1015 mb
Low level cloud: 17%
Mid level cloud: 98%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 24
May
04:00

ESE
ESE

4 / 8 mph 49 / 48°F 94% 1016 mb
Low level cloud: 100%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
10:00

SW
SW

2 / 4 mph 65 / 65°F 58% 1018 mb
Low level cloud: 10%
Mid level cloud: 15%
High level cloud: 9%
Most Significant Cloud Type: low
16%
0.0 In
16:00

SW
SW

6 / 11 mph 63 / 63°F 56% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
0.0 In
22:00

E
E

5 / 10 mph 54 / 53°F 91% 1015 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 42%
Most Significant Cloud Type: medium
8%
0.0 In
Sat 25
May
04:00

SSE
SSE

5 / 9 mph 51 / 50°F 92% 1012 mb
Low level cloud: 81%
Mid level cloud: 44%
High level cloud: 2%
Most Significant Cloud Type: low
96%
0.0 In
10:00

S
S

6 / 12 mph 60 / 60°F 67% 1015 mb
Low level cloud: 5%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
0.0 In
16:00

SW
SW

6 / 11 mph 65 / 65°F 63% 1015 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 93%
Most Significant Cloud Type: medium
19%
0.0 In
22:00

E
E

5 / 10 mph 55 / 54°F 86% 1012 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 24%
Most Significant Cloud Type: medium
11%
0.0 In
Sun 26
May
04:00

E
E

4 / 8 mph 48 / 47°F 93% 1017 mb
Low level cloud: 6%
Mid level cloud: 71%
High level cloud: 0%
Most Significant Cloud Type: medium
88%
0.0 In
10:00

S
S

11 / 20 mph 58 / 55°F 69% 1016 mb
Low level cloud: 47%
Mid level cloud: 82%
High level cloud: 0%
Most Significant Cloud Type: low
75%
0.0 In
16:00

SSW
SSW

6 / 11 mph 66 / 65°F 62% 1019 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 17%
Most Significant Cloud Type: medium
11%
0.0 In
22:00

SE
SE

8 / 15 mph 55 / 53°F 69% 1016 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 1%
Most Significant Cloud Type: medium
7%
0.0 In
Mon 27
May
04:00

ESE
ESE

4 / 7 mph 53 / 53°F 93% 1020 mb
Low level cloud: 3%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
0.0 In
10:00

SSE
SSE

11 / 20 mph 55 / 52°F 75% 1023 mb
Low level cloud: 74%
Mid level cloud: 16%
High level cloud: 19%
Most Significant Cloud Type: low
82%
0.0 In
16:00

SSW
SSW

6 / 12 mph 67 / 67°F 58% 1020 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

ESE
ESE

7 / 13 mph 51 / 49°F 78% 1021 mb
Low level cloud: 0%
Mid level cloud: 55%
High level cloud: 100%
Most Significant Cloud Type: medium
59%
0.0 In
Tue 28
May
04:00

ESE
ESE

4 / 9 mph 55 / 54°F 94% 1020 mb
Low level cloud: 1%
Mid level cloud: 7%
High level cloud: 3%
Most Significant Cloud Type: medium
9%
0.0 In
10:00

S
S

10 / 18 mph 51 / 47°F 93% 1021 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
16:00

SW
SW

3 / 7 mph 73 / 76°F 61% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

SSW
SSW

10 / 20 mph 50 / 47°F 89% 1019 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
46%
0.2 In
Wed 29
May
04:00

SSE
SSE

5 / 10 mph 55 / 54°F 95% 1012 mb
Low level cloud: 6%
Mid level cloud: 14%
High level cloud: 100%
Most Significant Cloud Type: medium
35%
0.0 In
10:00

SSW
SSW

11 / 24 mph 46 / 41°F 89% 1020 mb
Low level cloud: 92%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.1 In
16:00

SSE
SSE

6 / 13 mph 57 / 56°F 99% 1012 mb
Low level cloud: 90%
Mid level cloud: 67%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.1 In
22:00

ESE
ESE

3 / 7 mph 48 / 47°F 81% 1018 mb
Low level cloud: 18%
Mid level cloud: 37%
High level cloud: 3%
Most Significant Cloud Type: low
31%
0.0 In
Thu 30
May
04:00

SSE
SSE

10 / 20 mph 50 / 46°F 93% 1019 mb
Low level cloud: 48%
Mid level cloud: 49%
High level cloud: 0%
Most Significant Cloud Type: low
65%
0.8 In
10:00

SSE
SSE

8 / 18 mph 49 / 46°F 83% 1019 mb
Low level cloud: 99%
Mid level cloud: 51%
High level cloud: 4%
Most Significant Cloud Type: low
100%
0.0 In
16:00

SSE
SSE

4 / 8 mph 65 / 65°F 56% 1024 mb
Low level cloud: 3%
Mid level cloud: 9%
High level cloud: 100%
Most Significant Cloud Type: medium
20%
0.1 In
22:00

ENE
ENE

6 / 12 mph 47 / 44°F 93% 1020 mb
Low level cloud: 92%
Mid level cloud: 100%
High level cloud: 10%
Most Significant Cloud Type: low
100%
0.0 In
Fri 31
May
04:00

ENE
ENE

3 / 6 mph 48 / 48°F 84% 1020 mb
Low level cloud: 0%
Mid level cloud: 76%
High level cloud: 30%
Most Significant Cloud Type: medium
76%
0.0 In
10:00

SE
SE

6 / 12 mph 51 / 49°F 89% 1022 mb
Low level cloud: 85%
Mid level cloud: 68%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
16:00

W
W

3 / 7 mph 63 / 63°F 60% 1015 mb
Low level cloud: 0%
Mid level cloud: 62%
High level cloud: 100%
Most Significant Cloud Type: medium
65%
0.0 In
22:00

ESE
ESE

3 / 7 mph 53 / 53°F 82% 1021 mb
Low level cloud: 91%
Mid level cloud: 87%
High level cloud: 6%
Most Significant Cloud Type: low
100%
0.0 In
Sat 01
Jun
04:00

S
S

11 / 23 mph 51 / 46°F 83% 1018 mb
Low level cloud: 6%
Mid level cloud: 100%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
0.0 In
10:00

SSE
SSE

7 / 15 mph 57 / 56°F 72% 1021 mb
Low level cloud: 69%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
79%
0.0 In
16:00

SW
SW

5 / 11 mph 62 / 62°F 54% 1020 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
45%
0.1 In
22:00

E
E

3 / 7 mph 57 / 58°F 72% 1018 mb
Low level cloud: 17%
Mid level cloud: 80%
High level cloud: 33%
Most Significant Cloud Type: medium
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