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Huichon 14 Day Long Range Forecast

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

North Korea

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

Reviewing the forecast for Huichon Over the next 14 days and the average daytime maximum temperature will be around 11°C, with a high for the two weeks of 13°C expected on the afternoon of Saturday 21st. The average minimum temperature will be -3°C, dipping to its lowest on the morning of Monday 23rd at -8°C. Expect the following 14 days ahead to remain predominantly dry. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 15
Mar
15:00

WSW
WSW

7 / 9 mph 53 / 50°F 31% 1023 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
18:00

W
W

6 / 7 mph 49 / 46°F 31% 1023 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

NNW
NNW

3 / 5 mph 38 / 35°F 45% 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
Mon 16
Mar
00:00

NNE
NNE

3 / 6 mph 31 / 28°F 41% 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
03:00

NNE
NNE

3 / 7 mph 28 / 24°F 39% 1026 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

NNE
NNE

3 / 7 mph 27 / 23°F 38% 1026 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

NE
NE

2 / 2 mph 44 / 43°F 26% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 32%
Most Significant Cloud Type: high
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

1 / 1 mph 53 / 53°F 20% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

5 / 6 mph 55 / 53°F 21% 1020 mb
Low level cloud: 0%
Mid level cloud: 85%
High level cloud: 33%
Most Significant Cloud Type: medium
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

3 / 5 mph 44 / 43°F 35% 1021 mb
Low level cloud: 0%
Mid level cloud: 98%
High level cloud: 83%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

W
W

1 / 3 mph 36 / 36°F 44% 1022 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 100%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 17
Mar
00:00

NNW
NNW

0 / 0 mph 34 / 34°F 49% 1023 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 100%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

2 / 3 mph 30 / 30°F 53% 1023 mb
Low level cloud: 0%
Mid level cloud: 33%
High level cloud: 0%
Most Significant Cloud Type: medium
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

1 / 2 mph 29 / 29°F 54% 1023 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

0 / 0 mph 45 / 44°F 38% 1023 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

SW
SW

2 / 3 mph 54 / 54°F 28% 1021 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

SW
SW

9 / 10 mph 56 / 53°F 28% 1020 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 1%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

6 / 6 mph 50 / 48°F 38% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 6%
Most Significant Cloud Type: high
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

0 / 1 mph 36 / 36°F 49% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 12%
Most Significant Cloud Type: high
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 18
Mar
00:00

NE
NE

1 / 2 mph 33 / 33°F 51% 1022 mb
Low level cloud: 0%
Mid level cloud: 98%
High level cloud: 21%
Most Significant Cloud Type: medium
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

2 / 4 mph 32 / 30°F 53% 1021 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 21%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

1 / 2 mph 31 / 31°F 53% 1019 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 33%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

1 / 1 mph 45 / 45°F 43% 1019 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 100%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

6 / 7 mph 53 / 49°F 27% 1018 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 8%
Most Significant Cloud Type: medium
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

8 / 9 mph 55 / 52°F 27% 1016 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

5 / 6 mph 51 / 48°F 37% 1015 mb
Low level cloud: 0%
Mid level cloud: 7%
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

NNW
NNW

3 / 7 mph 36 / 33°F 64% 1017 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 19
Mar
00:00

NNE
NNE

4 / 7 mph 33 / 30°F 77% 1019 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

NNE
NNE

4 / 8 mph 30 / 26°F 80% 1019 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

NE
NE

3 / 7 mph 27 / 23°F 77% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

1 / 1 mph 44 / 43°F 56% 1018 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
12:00

SW
SW

5 / 6 mph 52 / 50°F 38% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

9 / 10 mph 53 / 50°F 34% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

5 / 6 mph 47 / 44°F 39% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: high
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

2 / 4 mph 35 / 34°F 49% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 9%
Most Significant Cloud Type: high
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 20
Mar
00:00

N
N

2 / 5 mph 33 / 31°F 49% 1019 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
03:00

NNE
NNE

4 / 8 mph 29 / 25°F 51% 1020 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
06:00

NNE
NNE

3 / 7 mph 28 / 24°F 53% 1020 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
09:00

NE
NE

2 / 2 mph 44 / 44°F 36% 1021 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

WSW
WSW

3 / 3 mph 52 / 51°F 21% 1019 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

W
W

9 / 11 mph 54 / 51°F 17% 1018 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
18:00

NW
NW

7 / 8 mph 48 / 45°F 26% 1018 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 1%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

N
N

2 / 5 mph 35 / 34°F 35% 1021 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 21
Mar
00:00

NNE
NNE

2 / 4 mph 33 / 32°F 40% 1022 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
03:00

NE
NE

2 / 4 mph 30 / 28°F 43% 1022 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

2 / 4 mph 28 / 27°F 45% 1023 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

1 / 1 mph 46 / 45°F 33% 1023 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

7 / 9 mph 53 / 50°F 29% 1021 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 2%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

11 / 13 mph 56 / 53°F 30% 1018 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

7 / 8 mph 49 / 46°F 34% 1019 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 3%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

2 / 2 mph 41 / 41°F 54% 1020 mb
Low level cloud: 0%
Mid level cloud: 86%
High level cloud: 7%
Most Significant Cloud Type: medium
86%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Sun 22
Mar
03:00

ENE
ENE

1 / 2 mph 34 / 34°F 41% 1025 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: medium
44%
0.0 In
09:00

SSE
SSE

1 / 1 mph 48 / 48°F 35% 1024 mb
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 8%
Most Significant Cloud Type: medium
27%
0.0 In
15:00

WSW
WSW

7 / 8 mph 55 / 54°F 26% 1020 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 100%
Most Significant Cloud Type: medium
11%
0.0 In
21:00

SW
SW

0 / 1 mph 42 / 42°F 79% 1017 mb
Low level cloud: 1%
Mid level cloud: 73%
High level cloud: 100%
Most Significant Cloud Type: medium
80%
0.0 In
Mon 23
Mar
03:00

NNW
NNW

4 / 6 mph 35 / 31°F 91% 1020 mb
Low level cloud: 13%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
14%
0.0 In
09:00

NNE
NNE

3 / 3 mph 40 / 38°F 70% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
15:00

WNW
WNW

6 / 7 mph 53 / 51°F 25% 1017 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
21:00

N
N

4 / 8 mph 29 / 25°F 72% 1023 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 2%
Most Significant Cloud Type: medium
3%
0.0 In
Tue 24
Mar
03:00

NE
NE

4 / 8 mph 30 / 25°F 53% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
09:00

ENE
ENE

1 / 2 mph 43 / 43°F 49% 1025 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 6%
Most Significant Cloud Type: medium
29%
0.0 In
15:00

SW
SW

8 / 9 mph 54 / 52°F 31% 1017 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 100%
Most Significant Cloud Type: medium
8%
0.0 In
21:00

N
N

1 / 3 mph 35 / 35°F 66% 1023 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
Wed 25
Mar
03:00

ENE
ENE

2 / 3 mph 39 / 39°F 49% 1019 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
0.0 In
09:00

NE
NE

1 / 2 mph 50 / 49°F 47% 1021 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 13%
Most Significant Cloud Type: medium
5%
0.0 In
15:00

SW
SW

6 / 6 mph 54 / 53°F 46% 1016 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
50%
0.0 In
21:00

NE
NE

2 / 3 mph 42 / 42°F 56% 1018 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 100%
Most Significant Cloud Type: medium
6%
0.0 In
Thu 26
Mar
03:00

N
N

0 / 1 mph 37 / 37°F 66% 1016 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
0.0 In
09:00

S
S

0 / 1 mph 52 / 53°F 45% 1018 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
0.0 In
15:00

SW
SW

6 / 7 mph 60 / 60°F 38% 1013 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 9%
Most Significant Cloud Type: medium
7%
0.0 In
21:00

SW
SW

0 / 0 mph 44 / 44°F 63% 1018 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 9%
Most Significant Cloud Type: medium
4%
0.0 In
Fri 27
Mar
03:00

NE
NE

3 / 5 mph 40 / 38°F 72% 1017 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: medium
8%
0.0 In
09:00

NE
NE

1 / 2 mph 49 / 49°F 57% 1018 mb
Low level cloud: 0%
Mid level cloud: 91%
High level cloud: 100%
Most Significant Cloud Type: medium
94%
0.0 In
15:00

SW
SW

6 / 7 mph 65 / 65°F 38% 1015 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 21%
Most Significant Cloud Type: medium
5%
0.0 In
21:00

E
E

2 / 4 mph 48 / 49°F 59% 1013 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 15%
Most Significant Cloud Type: medium
9%
0.0 In
Sat 28
Mar
03:00

WNW
WNW

2 / 3 mph 44 / 44°F 62% 1017 mb
Low level cloud: 0%
Mid level cloud: 40%
High level cloud: 17%
Most Significant Cloud Type: medium
40%
0.0 In
09:00

SSE
SSE

2 / 3 mph 45 / 45°F 94% 1005 mb
Low level cloud: 98%
Mid level cloud: 97%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.5 In
15:00

W
W

3 / 4 mph 53 / 52°F 65% 1013 mb
Low level cloud: 5%
Mid level cloud: 8%
High level cloud: 96%
Most Significant Cloud Type: medium
25%
0.1 In
21:00

W
W

7 / 15 mph 31 / 24°F 54% 1008 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: medium
23%
0.2 In
Sun 29
Mar
03:00

NNE
NNE

2 / 3 mph 33 / 33°F 50% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
09:00

W
W

11 / 16 mph 40 / 33°F 46% 1010 mb
Low level cloud: 0%
Mid level cloud: 48%
High level cloud: 0%
Most Significant Cloud Type: medium
48%
0.0 In
15:00

NNW
NNW

13 / 15 mph 55 / 51°F 26% 1014 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
21:00

WNW
WNW

4 / 8 mph 35 / 31°F 57% 1014 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
Mon 30
Mar
03:00

NNE
NNE

4 / 8 mph 33 / 29°F 57% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 10%
Most Significant Cloud Type: high
10%
0.0 In
09:00

NW
NW

2 / 2 mph 48 / 48°F 40% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
1%
0.0 In
15:00

SW
SW

8 / 9 mph 63 / 63°F 29% 1017 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
21:00

N
N

4 / 9 mph 37 / 33°F 58% 1018 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 11%
Most Significant Cloud Type: medium
4%
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