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Astoria 14 Day Long Range Forecast

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

Oregon, United States Of America

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

Taking a look at Astoria over the coming two weeks and the average daytime maximum temperature will be around 19°C, with a high for the two weeks of 23°C expected on the morning of Thursday 20th. The average minimum temperature will be 10°C, dipping to its lowest on the morning of Sunday 16th at 7°C. The coming 14 days will have most days seeing a little rain. The indicators are that Monday 24th will have the most precipitation with an accumulation of around 7.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 15
Jun		01:00

SW
SW

 11 / 15 mph 51 / 47°F 86% 1019 mb
Low level cloud: 12%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
23%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

W
W

 13 / 20 mph 50 / 45°F 85% 1019 mb
Low level cloud: 11%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
74%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
07:00

WSW
WSW

 15 / 24 mph 51 / 45°F 82% 1019 mb
Low level cloud: 63%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
68%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
10:00

W
W

 14 / 21 mph 55 / 50°F 80% 1020 mb
Low level cloud: 66%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
69%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
13:00

WSW
WSW

 15 / 19 mph 59 / 56°F 69% 1021 mb
Low level cloud: 16%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

 13 / 17 mph 61 / 59°F 72% 1021 mb
Low level cloud: 30%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

 10 / 13 mph 58 / 54°F 80% 1021 mb
Low level cloud: 44%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WNW
WNW

 4 / 4 mph 54 / 54°F 82% 1022 mb
Low level cloud: 46%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 16
Jun		16:00

NW
NW

 12 / 14 mph 65 / 64°F 65% 1017 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

 11 / 13 mph 60 / 56°F 81% 1017 mb
Low level cloud: 42%
Mid level cloud: 17%
High level cloud: 7%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NW
NW

 8 / 13 mph 50 / 46°F 88% 1017 mb
Low level cloud: 54%
Mid level cloud: 44%
High level cloud: 22%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 17
Jun		01:00

NW
NW

 7 / 9 mph 52 / 50°F 89% 1018 mb
Low level cloud: 68%
Mid level cloud: 25%
High level cloud: 8%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NW
NW

 6 / 9 mph 51 / 49°F 88% 1018 mb
Low level cloud: 56%
Mid level cloud: 28%
High level cloud: 3%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NW
NW

 7 / 12 mph 53 / 48°F 87% 1019 mb
Low level cloud: 48%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

 9 / 11 mph 56 / 52°F 80% 1020 mb
Low level cloud: 52%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WNW
WNW

 10 / 12 mph 59 / 55°F 74% 1020 mb
Low level cloud: 60%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

 8 / 9 mph 59 / 56°F 71% 1020 mb
Low level cloud: 71%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

 6 / 7 mph 57 / 55°F 76% 1019 mb
Low level cloud: 83%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NW
NW

 3 / 4 mph 54 / 54°F 83% 1020 mb
Low level cloud: 83%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 18
Jun		01:00

WNW
WNW

 0 / 1 mph 51 / 51°F 86% 1019 mb
Low level cloud: 68%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
67%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SE
SE

 3 / 5 mph 49 / 48°F 87% 1018 mb
Low level cloud: 74%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: low
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ESE
ESE

 1 / 2 mph 56 / 54°F 77% 1018 mb
Low level cloud: 61%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

 5 / 5 mph 65 / 62°F 68% 1017 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

NW
NW

 12 / 14 mph 67 / 66°F 67% 1016 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
16:00

NNW
NNW

 11 / 13 mph 66 / 65°F 70% 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
19:00

NNW
NNW

 9 / 10 mph 62 / 60°F 79% 1014 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

N
N

 6 / 13 mph 49 / 46°F 89% 1014 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
Wed 19
Jun		01:00

NNE
NNE

 5 / 10 mph 48 / 46°F 88% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ENE
ENE

 4 / 9 mph 47 / 46°F 86% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 20%
Most Significant Cloud Type: high
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NE
NE

 5 / 8 mph 56 / 53°F 72% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 33%
Most Significant Cloud Type: high
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NNW
NNW

 6 / 6 mph 73 / 76°F 60% 1013 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 17%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NNW
NNW

 12 / 14 mph 73 / 76°F 62% 1012 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 13%
Most Significant Cloud Type: high
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNW
NNW

 12 / 13 mph 70 / 68°F 68% 1012 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 5%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NNW
NNW

 7 / 9 mph 64 / 62°F 78% 1012 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 6 / 13 mph 51 / 49°F 87% 1013 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 6%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 20
Jun		01:00

NNE
NNE

 3 / 7 mph 51 / 50°F 88% 1013 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 13%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNE
NNE

 4 / 9 mph 50 / 49°F 86% 1013 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 94%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NE
NE

 4 / 8 mph 59 / 57°F 74% 1013 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 76%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

 6 / 7 mph 74 / 76°F 64% 1013 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 100%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NW
NW

 10 / 11 mph 72 / 76°F 70% 1014 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 22%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNW
NNW

 9 / 10 mph 72 / 69°F 70% 1014 mb
Low level cloud: 0%
Mid level cloud: 18%
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

NW
NW

 8 / 13 mph 58 / 56°F 83% 1014 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 5 / 10 mph 51 / 49°F 93% 1015 mb
Low level cloud: 2%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 21
Jun		01:00

NW
NW

 5 / 11 mph 50 / 48°F 94% 1015 mb
Low level cloud: 21%
Mid level cloud: 3%
High level cloud: 9%
Most Significant Cloud Type: low
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NNW
NNW

 4 / 9 mph 49 / 48°F 94% 1015 mb
Low level cloud: 17%
Mid level cloud: 3%
High level cloud: 58%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNW
NNW

 5 / 8 mph 56 / 53°F 87% 1015 mb
Low level cloud: 13%
Mid level cloud: 3%
High level cloud: 18%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

 8 / 9 mph 72 / 69°F 73% 1015 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 76%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NW
NW

 9 / 11 mph 74 / 76°F 71% 1013 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NW
NW

 10 / 11 mph 71 / 69°F 71% 1013 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 9%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

 7 / 9 mph 65 / 63°F 80% 1012 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NNW
NNW

 5 / 10 mph 49 / 48°F 91% 1012 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
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 22
Jun		04:00

NNW
NNW

 5 / 10 mph 54 / 53°F 86% 1014 mb
Low level cloud: 92%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
94%
0.0 In
10:00

WNW
WNW

 5 / 11 mph 68 / 68°F 75% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
16:00

NW
NW

 10 / 20 mph 67 / 67°F 65% 1015 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 5%
Most Significant Cloud Type: medium
2%
0.0 In
22:00

NNW
NNW

 5 / 11 mph 58 / 57°F 93% 1016 mb
Low level cloud: 30%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
30%
0.0 In
Sun 23
Jun		04:00

NE
NE

 2 / 5 mph 51 / 52°F 92% 1014 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
7%
0.0 In
10:00

NW
NW

 7 / 14 mph 57 / 56°F 92% 1013 mb
Low level cloud: 92%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
93%
0.0 In
16:00

NW
NW

 8 / 17 mph 58 / 57°F 78% 1014 mb
Low level cloud: 95%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: low
95%
0.0 In
22:00

SSW
SSW

 8 / 16 mph 55 / 53°F 91% 1016 mb
Low level cloud: 43%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
52%
0.0 In
Mon 24
Jun		04:00

NNE
NNE

 1 / 2 mph 50 / 50°F 77% 1015 mb
Low level cloud: 50%
Mid level cloud: 0%
High level cloud: 25%
Most Significant Cloud Type: low
53%
0.0 In
10:00

SW
SW

 7 / 15 mph 57 / 55°F 91% 1017 mb
Low level cloud: 94%
Mid level cloud: 98%
High level cloud: 3%
Most Significant Cloud Type: low
100%
0.1 In
16:00

WNW
WNW

 9 / 18 mph 60 / 60°F 63% 1014 mb
Low level cloud: 0%
Mid level cloud: 90%
High level cloud: 97%
Most Significant Cloud Type: medium
94%
0.0 In
22:00

WSW
WSW

 4 / 9 mph 56 / 55°F 93% 1020 mb
Low level cloud: 60%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
65%
0.1 In
Tue 25
Jun		04:00

SSE
SSE

 3 / 6 mph 50 / 50°F 88% 1016 mb
Low level cloud: 31%
Mid level cloud: 8%
High level cloud: 22%
Most Significant Cloud Type: low
36%
0.0 In
10:00

W
W

 4 / 10 mph 60 / 60°F 74% 1022 mb
Low level cloud: 1%
Mid level cloud: 3%
High level cloud: 100%
Most Significant Cloud Type: medium
8%
0.0 In
16:00

SW
SW

 11 / 23 mph 57 / 54°F 73% 1020 mb
Low level cloud: 2%
Mid level cloud: 24%
High level cloud: 33%
Most Significant Cloud Type: medium
32%
0.0 In
22:00

N
N

 2 / 4 mph 54 / 54°F 92% 1021 mb
Low level cloud: 7%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
10%
0.0 In
Wed 26
Jun		04:00

SSW
SSW

 8 / 17 mph 53 / 51°F 91% 1021 mb
Low level cloud: 23%
Mid level cloud: 15%
High level cloud: 33%
Most Significant Cloud Type: low
31%
0.0 In
10:00

SW
SW

 2 / 5 mph 57 / 58°F 77% 1021 mb
Low level cloud: 92%
Mid level cloud: 54%
High level cloud: 11%
Most Significant Cloud Type: low
100%
0.0 In
16:00

SW
SW

 11 / 22 mph 59 / 57°F 81% 1024 mb
Low level cloud: 61%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: low
67%
0.0 In
22:00

NW
NW

 4 / 9 mph 56 / 55°F 93% 1018 mb
Low level cloud: 81%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
Thu 27
Jun		04:00

NW
NW

 3 / 6 mph 52 / 52°F 95% 1027 mb
Low level cloud: 54%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
55%
0.0 In
10:00

WSW
WSW

 4 / 8 mph 55 / 55°F 94% 1015 mb
Low level cloud: 93%
Mid level cloud: 100%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.1 In
16:00

NW
NW

 10 / 21 mph 63 / 63°F 67% 1027 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
0.0 In
22:00

NNW
NNW

 4 / 9 mph 54 / 53°F 91% 1015 mb
Low level cloud: 72%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
80%
0.1 In
Fri 28
Jun		04:00

NE
NE

 4 / 9 mph 47 / 45°F 81% 1023 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 28%
Most Significant Cloud Type: medium
5%
0.0 In
10:00

NW
NW

 11 / 23 mph 54 / 51°F 80% 1018 mb
Low level cloud: 19%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.0 In
16:00

NW
NW

 10 / 21 mph 70 / 70°F 70% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 12%
Most Significant Cloud Type: high
11%
0.0 In
22:00

NNW
NNW

 4 / 8 mph 54 / 53°F 90% 1022 mb
Low level cloud: 49%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
49%
0.0 In
Sat 29
Jun		04:00

SW
SW

 0 / 0 mph 54 / 53°F 95% 1014 mb
Low level cloud: 97%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
97%
0.0 In
10:00

NNW
NNW

 6 / 12 mph 65 / 65°F 69% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

W
W

 11 / 22 mph 58 / 56°F 69% 1017 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
22:00

N
N

 6 / 13 mph 55 / 53°F 88% 1017 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
Sun 30
Jun		04:00

SE
SE

 5 / 11 mph 47 / 45°F 89% 1018 mb
Low level cloud: 24%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
27%
0.0 In
10:00

N
N

 6 / 13 mph 73 / 76°F 59% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

W
W

 9 / 19 mph 62 / 62°F 69% 1016 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
0.0 In
22:00

NW
NW

 6 / 12 mph 57 / 56°F 90% 1014 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
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