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Koriyama 14 Day Long Range Forecast

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

Japan

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

Reviewing the forecast for Koriyama Over the next 14 days and the average daytime maximum temperature will be around 8°C, with a high for the two weeks of 13°C expected on the afternoon of Saturday 20th. The average minimum temperature will be 0°C, dipping to its lowest on the morning of Friday 19th at -4°C. The next 14 days will have some days seeing a little precipitation and some days with rain, sleet or snow. It looks like Sunday 28th will have the most precipitation with an accumulation of around 42.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Thu 18
Dec
15:00

WNW
WNW

11 / 13 mph 43 / 37°F 66% 1025 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
18:00

WNW
WNW

8 / 9 mph 36 / 30°F 78% 1028 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
21:00

WNW
WNW

5 / 7 mph 31 / 26°F 82% 1029 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
Fri 19
Dec
00:00

WNW
WNW

3 / 7 mph 27 / 23°F 84% 1029 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WNW
WNW

3 / 6 mph 26 / 22°F 80% 1030 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
06:00

WNW
WNW

2 / 4 mph 26 / 24°F 77% 1031 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
09:00

SSE
SSE

2 / 2 mph 41 / 40°F 57% 1031 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 2%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

S
S

6 / 6 mph 49 / 46°F 50% 1028 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 4%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

6 / 7 mph 49 / 46°F 67% 1028 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

3 / 6 mph 34 / 32°F 90% 1030 mb
Low level cloud: 1%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

2 / 5 mph 31 / 30°F 92% 1030 mb
Low level cloud: 11%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 20
Dec
00:00

WSW
WSW

2 / 5 mph 33 / 31°F 93% 1029 mb
Low level cloud: 13%
Mid level cloud: 4%
High level cloud: 15%
Most Significant Cloud Type: low
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

3 / 7 mph 33 / 30°F 93% 1028 mb
Low level cloud: 5%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WSW
WSW

3 / 6 mph 33 / 31°F 89% 1027 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
09:00

SSW
SSW

3 / 6 mph 43 / 41°F 76% 1027 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

7 / 8 mph 55 / 53°F 78% 1024 mb
Low level cloud: 39%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

5 / 6 mph 50 / 48°F 91% 1024 mb
Low level cloud: 54%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

4 / 8 mph 43 / 41°F 97% 1024 mb
Low level cloud: 78%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

3 / 7 mph 43 / 42°F 98% 1024 mb
Low level cloud: 85%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 21
Dec
00:00

SSW
SSW

4 / 8 mph 47 / 45°F 99% 1021 mb
Low level cloud: 94%
Mid level cloud: 7%
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

SSW
SSW

6 / 12 mph 48 / 45°F 98% 1019 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
06:00

SSW
SSW

8 / 14 mph 50 / 46°F 97% 1018 mb
Low level cloud: 88%
Mid level cloud: 17%
High level cloud: 32%
Most Significant Cloud Type: low
97%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

8 / 13 mph 52 / 49°F 98% 1016 mb
Low level cloud: 93%
Mid level cloud: 46%
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

S
S

9 / 11 mph 54 / 51°F 98% 1013 mb
Low level cloud: 94%
Mid level cloud: 51%
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

SW
SW

5 / 8 mph 54 / 52°F 96% 1012 mb
Low level cloud: 60%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

6 / 9 mph 52 / 50°F 92% 1013 mb
Low level cloud: 20%
Mid level cloud: 89%
High level cloud: 32%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

11 / 13 mph 51 / 46°F 88% 1015 mb
Low level cloud: 53%
Mid level cloud: 83%
High level cloud: 1%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 22
Dec
00:00

WNW
WNW

17 / 19 mph 45 / 38°F 87% 1017 mb
Low level cloud: 64%
Mid level cloud: 24%
High level cloud: 10%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WNW
WNW

17 / 20 mph 40 / 32°F 84% 1018 mb
Low level cloud: 33%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

17 / 20 mph 37 / 28°F 82% 1021 mb
Low level cloud: 24%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

15 / 17 mph 39 / 31°F 72% 1025 mb
Low level cloud: 19%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

15 / 17 mph 42 / 35°F 59% 1025 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WNW
WNW

12 / 14 mph 41 / 34°F 64% 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
18:00

NW
NW

8 / 9 mph 35 / 28°F 75% 1030 mb
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NW
NW

6 / 6 mph 33 / 27°F 76% 1032 mb
Low level cloud: 2%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 23
Dec
00:00

NW
NW

3 / 3 mph 31 / 29°F 78% 1033 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
03:00

WNW
WNW

2 / 2 mph 30 / 30°F 79% 1034 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
06:00

N
N

2 / 3 mph 29 / 28°F 81% 1034 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
09:00

SSE
SSE

2 / 2 mph 38 / 37°F 65% 1034 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
12:00

SSE
SSE

4 / 5 mph 44 / 42°F 48% 1031 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
15:00

S
S

5 / 6 mph 45 / 42°F 52% 1029 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: high
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

4 / 8 mph 30 / 27°F 82% 1031 mb
Low level cloud: 33%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

4 / 6 mph 32 / 29°F 89% 1031 mb
Low level cloud: 45%
Mid level cloud: 28%
High level cloud: 16%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 24
Dec
00:00

S
S

4 / 8 mph 31 / 27°F 93% 1029 mb
Low level cloud: 5%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

4 / 9 mph 29 / 25°F 89% 1026 mb
Low level cloud: 5%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

6 / 13 mph 33 / 28°F 82% 1023 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 32%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

9 / 11 mph 45 / 40°F 72% 1020 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 94%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

S
S

12 / 14 mph 51 / 47°F 70% 1016 mb
Low level cloud: 13%
Mid level cloud: 69%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

10 / 13 mph 46 / 41°F 87% 1013 mb
Low level cloud: 67%
Mid level cloud: 61%
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

SSW
SSW

3 / 6 mph 42 / 40°F 94% 1013 mb
Low level cloud: 47%
Mid level cloud: 88%
High level cloud: 100%
Most Significant Cloud Type: low
89%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

SW
SW

3 / 6 mph 41 / 39°F 97% 1011 mb
Low level cloud: 73%
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
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Thu 25
Dec
03:00

WNW
WNW

4 / 5 mph 39 / 36°F 92% 1015 mb
Low level cloud: 73%
Mid level cloud: 44%
High level cloud: 1%
Most Significant Cloud Type: low
87%
0.0 In
09:00

S
S

6 / 8 mph 45 / 42°F 81% 1012 mb
Low level cloud: 3%
Mid level cloud: 35%
High level cloud: 4%
Most Significant Cloud Type: medium
42%
0.0 In
15:00

NW
NW

9 / 10 mph 42 / 36°F 93% 1009 mb
Low level cloud: 60%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
65%
0.0 In
21:00

WNW
WNW

8 / 10 mph 36 / 30°F 83% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
2%
0.0 In
Fri 26
Dec
03:00

WNW
WNW

15 / 19 mph 33 / 23°F 82% 1012 mb
Low level cloud: 20%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
25%
0.0 In
09:00

W
W

4 / 6 mph 43 / 40°F 61% 1024 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
15:00

NW
NW

3 / 4 mph 52 / 52°F 56% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
21:00

E
E

2 / 2 mph 35 / 34°F 85% 1027 mb
Low level cloud: 35%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: low
46%
0.0 In
Sat 27
Dec
03:00

S
S

1 / 1 mph 33 / 33°F 85% 1026 mb
Low level cloud: 9%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: medium
29%
0.0 In
09:00

SE
SE

3 / 4 mph 41 / 39°F 75% 1022 mb
Low level cloud: 26%
Mid level cloud: 76%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
15:00

SE
SE

2 / 3 mph 48 / 48°F 70% 1017 mb
Low level cloud: 78%
Mid level cloud: 68%
High level cloud: 99%
Most Significant Cloud Type: low
100%
0.0 In
21:00

NNE
NNE

4 / 4 mph 40 / 37°F 97% 1011 mb
Low level cloud: 98%
Mid level cloud: 98%
High level cloud: 86%
Most Significant Cloud Type: low
100%
0.1 In
Sun 28
Dec
03:00

NE
NE

9 / 12 mph 41 / 35°F 98% 1005 mb
Low level cloud: 97%
Mid level cloud: 86%
High level cloud: 38%
Most Significant Cloud Type: low
100%
0.0 In
09:00

NW
NW

15 / 21 mph 38 / 29°F 92% 997 mb
Low level cloud: 40%
Mid level cloud: 45%
High level cloud: 32%
Most Significant Cloud Type: low
59%
1.6 In
15:00

WNW
WNW

15 / 18 mph 37 / 28°F 96% 990 mb
Low level cloud: 63%
Mid level cloud: 45%
High level cloud: 69%
Most Significant Cloud Type: low
87%
1.7 In
21:00

WNW
WNW

25 / 30 mph 38 / 27°F 80% 996 mb
Low level cloud: 1%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
47%
0.3 In
Mon 29
Dec
03:00

NW
NW

13 / 17 mph 38 / 29°F 90% 996 mb
Low level cloud: 70%
Mid level cloud: 49%
High level cloud: 21%
Most Significant Cloud Type: low
89%
0.6 In
09:00

W
W

15 / 20 mph 35 / 26°F 84% 999 mb
Low level cloud: 46%
Mid level cloud: 44%
High level cloud: 2%
Most Significant Cloud Type: low
61%
0.2 In
15:00

NW
NW

17 / 23 mph 36 / 26°F 84% 1000 mb
Low level cloud: 33%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
49%
0.1 In
21:00

WSW
WSW

14 / 21 mph 32 / 22°F 85% 1002 mb
Low level cloud: 50%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
65%
0.2 In
Tue 30
Dec
03:00

WNW
WNW

16 / 23 mph 30 / 19°F 84% 1003 mb
Low level cloud: 44%
Mid level cloud: 42%
High level cloud: 15%
Most Significant Cloud Type: low
60%
0.1 In
09:00

WSW
WSW

4 / 6 mph 38 / 35°F 75% 1005 mb
Low level cloud: 0%
Mid level cloud: 61%
High level cloud: 6%
Most Significant Cloud Type: medium
60%
0.1 In
15:00

WNW
WNW

18 / 25 mph 37 / 28°F 74% 1002 mb
Low level cloud: 32%
Mid level cloud: 39%
High level cloud: 12%
Most Significant Cloud Type: low
47%
0.1 In
21:00

WNW
WNW

2 / 4 mph 29 / 27°F 93% 1004 mb
Low level cloud: 20%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
29%
0.0 In
Wed 31
Dec
03:00

WNW
WNW

13 / 18 mph 32 / 22°F 79% 1004 mb
Low level cloud: 19%
Mid level cloud: 45%
High level cloud: 17%
Most Significant Cloud Type: low
36%
0.0 In
09:00

WNW
WNW

6 / 9 mph 41 / 37°F 81% 1005 mb
Low level cloud: 4%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
5%
0.0 In
15:00

WNW
WNW

8 / 12 mph 39 / 34°F 87% 1006 mb
Low level cloud: 31%
Mid level cloud: 94%
High level cloud: 16%
Most Significant Cloud Type: medium
100%
0.1 In
21:00

W
W

4 / 7 mph 28 / 24°F 91% 1010 mb
Low level cloud: 12%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
80%
0.0 In
Thu 01
Jan
03:00

WNW
WNW

5 / 8 mph 36 / 32°F 93% 1010 mb
Low level cloud: 70%
Mid level cloud: 45%
High level cloud: 48%
Most Significant Cloud Type: low
91%
0.1 In
09:00

W
W

5 / 8 mph 40 / 37°F 74% 1008 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
15:00

WNW
WNW

14 / 21 mph 41 / 33°F 79% 1013 mb
Low level cloud: 17%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.0 In
21:00

WNW
WNW

4 / 9 mph 28 / 23°F 87% 1005 mb
Low level cloud: 1%
Mid level cloud: 80%
High level cloud: 0%
Most Significant Cloud Type: medium
84%
0.0 In
Fri 02
Jan
03:00

WNW
WNW

4 / 6 mph 31 / 27°F 94% 1016 mb
Low level cloud: 21%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.0 In
09:00

WNW
WNW

5 / 8 mph 38 / 34°F 78% 1004 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
0.0 In
15:00

SSE
SSE

2 / 3 mph 49 / 49°F 80% 1006 mb
Low level cloud: 25%
Mid level cloud: 10%
High level cloud: 6%
Most Significant Cloud Type: low
29%
0.0 In
21:00

W
W

6 / 10 mph 31 / 25°F 89% 1006 mb
Low level cloud: 9%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
11%
0.1 In

Other Locations Near to Koriyama

Cities and Towns: Nihonmatsu, Japan
Ski Resorts: Inawashiro Resort, Japan
Motor Racing: Ebisu Circuit, Japan

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