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Haeju 14 Day Long Range Forecast

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

North Korea

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

The outlook for Haeju in the two weeks ahead shows the average daytime maximum temperature will be around 18°C, with a high for the two weeks of 24°C expected on the evening of Friday 3rd. The average minimum temperature will be 13°C, dipping to its lowest on the morning of Wednesday 8th at 10°C. The fortnight ahead will have some days seeing a little precipitation and some days with rain. The current forecast indicates Sunday 5th will have the most precipitation with an accumulation of around 63.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Fri 03
May		18:00

NNW
NNW

 2 / 4 mph 76 / 75°F 36% 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
21:00

NNW
NNW

 5 / 9 mph 68 / 68°F 44% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: high
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 04
May		00:00

NNE
NNE

 4 / 8 mph 64 / 64°F 41% 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
03:00

NNE
NNE

 2 / 4 mph 61 / 61°F 42% 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
06:00

WNW
WNW

 1 / 1 mph 61 / 59°F 48% 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
09:00

ESE
ESE

 5 / 7 mph 68 / 66°F 41% 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
12:00

SSE
SSE

 8 / 10 mph 68 / 67°F 48% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 12%
Most Significant Cloud Type: high
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

 9 / 12 mph 69 / 67°F 44% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 11%
Most Significant Cloud Type: high
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 6 / 10 mph 67 / 66°F 41% 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

SSW
SSW

 3 / 4 mph 64 / 64°F 46% 1017 mb
Low level cloud: 0%
Mid level cloud: 25%
High level cloud: 100%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 05
May		00:00

S
S

 2 / 3 mph 62 / 62°F 49% 1016 mb
Low level cloud: 34%
Mid level cloud: 68%
High level cloud: 72%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

 8 / 13 mph 61 / 61°F 55% 1014 mb
Low level cloud: 84%
Mid level cloud: 76%
High level cloud: 88%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 8 / 12 mph 61 / 60°F 58% 1012 mb
Low level cloud: 95%
Mid level cloud: 66%
High level cloud: 95%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

 13 / 19 mph 56 / 53°F 90% 1012 mb
Low level cloud: 99%
Mid level cloud: 96%
High level cloud: 99%
Most Significant Cloud Type: low
100%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
12:00

ESE
ESE

 13 / 20 mph 57 / 54°F 97% 1011 mb
Low level cloud: 99%
Mid level cloud: 98%
High level cloud: 90%
Most Significant Cloud Type: low
100%
Expect 0.6 In of precipitation over the past 3 hours.
0.6 In
15:00

ESE
ESE

 15 / 23 mph 58 / 55°F 98% 1008 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.7 In of precipitation over the past 3 hours.
0.7 In
18:00

ESE
ESE

 13 / 20 mph 59 / 56°F 98% 1006 mb
Low level cloud: 100%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.7 In of precipitation over the past 3 hours.
0.7 In
21:00

ESE
ESE

 12 / 19 mph 59 / 56°F 98% 1004 mb
Low level cloud: 100%
Mid level cloud: 90%
High level cloud: 71%
Most Significant Cloud Type: low
100%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
Mon 06
May		00:00

NW
NW

 3 / 6 mph 55 / 56°F 98% 1004 mb
Low level cloud: 79%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
03:00

WSW
WSW

 7 / 13 mph 54 / 52°F 96% 1004 mb
Low level cloud: 97%
Mid level cloud: 44%
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

SW
SW

 8 / 14 mph 53 / 50°F 97% 1004 mb
Low level cloud: 98%
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
09:00

WSW
WSW

 11 / 14 mph 55 / 52°F 96% 1006 mb
Low level cloud: 100%
Mid level cloud: 89%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 13 / 15 mph 57 / 55°F 91% 1006 mb
Low level cloud: 99%
Mid level cloud: 85%
High level cloud: 4%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 13 / 15 mph 59 / 56°F 91% 1006 mb
Low level cloud: 98%
Mid level cloud: 96%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

 11 / 12 mph 58 / 55°F 91% 1006 mb
Low level cloud: 100%
Mid level cloud: 52%
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

SSW
SSW

 11 / 13 mph 56 / 53°F 96% 1006 mb
Low level cloud: 99%
Mid level cloud: 92%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 07
May		00:00

SW
SW

 8 / 10 mph 53 / 51°F 96% 1006 mb
Low level cloud: 99%
Mid level cloud: 46%
High level cloud: 4%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

 5 / 6 mph 53 / 52°F 96% 1006 mb
Low level cloud: 100%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

 5 / 7 mph 52 / 51°F 97% 1006 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 24%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

 8 / 11 mph 53 / 51°F 95% 1008 mb
Low level cloud: 97%
Mid level cloud: 80%
High level cloud: 17%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

 8 / 11 mph 55 / 53°F 88% 1009 mb
Low level cloud: 99%
Mid level cloud: 88%
High level cloud: 11%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

 8 / 11 mph 56 / 53°F 78% 1010 mb
Low level cloud: 97%
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
18:00

NE
NE

 6 / 8 mph 55 / 54°F 81% 1012 mb
Low level cloud: 98%
Mid level cloud: 98%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNE
NNE

 5 / 7 mph 54 / 53°F 84% 1014 mb
Low level cloud: 87%
Mid level cloud: 94%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 08
May		00:00

NE
NE

 8 / 11 mph 52 / 49°F 85% 1016 mb
Low level cloud: 46%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: low
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

 5 / 8 mph 51 / 50°F 85% 1015 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 100%
Most Significant Cloud Type: medium
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

 5 / 8 mph 52 / 49°F 82% 1015 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 32%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

 6 / 7 mph 58 / 56°F 64% 1016 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 25%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

 8 / 9 mph 66 / 63°F 50% 1016 mb
Low level cloud: 40%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 4 / 5 mph 65 / 62°F 59% 1014 mb
Low level cloud: 0%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: medium
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

 2 / 3 mph 66 / 63°F 55% 1013 mb
Low level cloud: 2%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: medium
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNW
NNW

 3 / 4 mph 62 / 62°F 71% 1015 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 09
May		00:00

NNW
NNW

 3 / 6 mph 57 / 57°F 74% 1015 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

 4 / 6 mph 54 / 54°F 76% 1014 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
06:00

NNW
NNW

 3 / 6 mph 53 / 52°F 77% 1014 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
09:00

WNW
WNW

 4 / 6 mph 62 / 60°F 56% 1014 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

 10 / 12 mph 68 / 67°F 42% 1013 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
15:00

WSW
WSW

 14 / 18 mph 68 / 67°F 40% 1012 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

WSW
WSW

 11 / 13 mph 66 / 64°F 55% 1011 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

SW
SW

 4 / 5 mph 59 / 59°F 79% 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
Fri 10
May		03:00

N
N

 2 / 3 mph 63 / 63°F 69% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
09:00

WSW
WSW

 2 / 2 mph 68 / 68°F 59% 1014 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
15:00

W
W

 6 / 7 mph 77 / 78°F 46% 1012 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
21:00

SSE
SSE

 6 / 8 mph 64 / 64°F 93% 1014 mb
Low level cloud: 23%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.0 In
Sat 11
May		03:00

SE
SE

 5 / 7 mph 57 / 56°F 91% 1013 mb
Low level cloud: 5%
Mid level cloud: 1%
High level cloud: 8%
Most Significant Cloud Type: low
6%
0.0 In
09:00

SSE
SSE

 13 / 24 mph 55 / 51°F 75% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 98%
Most Significant Cloud Type: high
97%
0.0 In
15:00

S
S

 11 / 16 mph 63 / 63°F 67% 1013 mb
Low level cloud: 0%
Mid level cloud: 93%
High level cloud: 0%
Most Significant Cloud Type: medium
93%
0.0 In
21:00

SSE
SSE

 4 / 6 mph 63 / 63°F 96% 1010 mb
Low level cloud: 81%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
82%
0.0 In
Sun 12
May		03:00

SSE
SSE

 16 / 28 mph 57 / 53°F 86% 1007 mb
Low level cloud: 83%
Mid level cloud: 60%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.0 In
09:00

SSE
SSE

 12 / 16 mph 60 / 60°F 96% 1010 mb
Low level cloud: 98%
Mid level cloud: 7%
High level cloud: 7%
Most Significant Cloud Type: low
100%
0.0 In
15:00

WSW
WSW

 21 / 34 mph 64 / 64°F 44% 1006 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.1 In
21:00

SE
SE

 2 / 4 mph 64 / 64°F 96% 1011 mb
Low level cloud: 85%
Mid level cloud: 94%
High level cloud: 99%
Most Significant Cloud Type: low
100%
0.5 In
Mon 13
May		03:00

WSW
WSW

 10 / 19 mph 54 / 51°F 79% 1008 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 22%
Most Significant Cloud Type: medium
3%
0.0 In
09:00

SE
SE

 2 / 5 mph 62 / 62°F 93% 1013 mb
Low level cloud: 81%
Mid level cloud: 0%
High level cloud: 8%
Most Significant Cloud Type: low
81%
0.2 In
15:00

W
W

 19 / 31 mph 66 / 66°F 35% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
21:00

SW
SW

 3 / 6 mph 69 / 69°F 91% 1013 mb
Low level cloud: 6%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
10%
0.0 In
Tue 14
May		03:00

SSW
SSW

 2 / 3 mph 58 / 59°F 57% 1013 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 3%
Most Significant Cloud Type: medium
43%
0.0 In
09:00

NE
NE

 4 / 9 mph 70 / 70°F 43% 1015 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 6%
Most Significant Cloud Type: medium
9%
0.0 In
15:00

SW
SW

 19 / 31 mph 64 / 64°F 62% 1011 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.0 In
21:00

NNW
NNW

 5 / 10 mph 70 / 70°F 50% 1014 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 32%
Most Significant Cloud Type: medium
20%
0.0 In
Wed 15
May		03:00

NNW
NNW

 3 / 4 mph 62 / 62°F 61% 1012 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
09:00

NE
NE

 7 / 15 mph 58 / 56°F 72% 1014 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
0.1 In
15:00

WSW
WSW

 16 / 27 mph 67 / 67°F 39% 1011 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 2%
Most Significant Cloud Type: medium
5%
0.0 In
21:00

ENE
ENE

 7 / 15 mph 61 / 61°F 82% 1010 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
50%
0.0 In
Thu 16
May		03:00

WNW
WNW

 5 / 9 mph 58 / 57°F 66% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
09:00

NE
NE

 5 / 10 mph 60 / 60°F 92% 1009 mb
Low level cloud: 61%
Mid level cloud: 87%
High level cloud: 47%
Most Significant Cloud Type: low
97%
0.2 In
15:00

WNW
WNW

 15 / 24 mph 68 / 68°F 39% 1011 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
0.0 In
21:00

N
N

 4 / 10 mph 67 / 67°F 87% 1008 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
0.0 In
Fri 17
May		03:00

WNW
WNW

 4 / 7 mph 60 / 60°F 62% 1011 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
09:00

NNW
NNW

 4 / 8 mph 70 / 71°F 67% 1010 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
15:00

SSW
SSW

 9 / 15 mph 70 / 70°F 40% 1011 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 6%
Most Significant Cloud Type: medium
11%
0.0 In
21:00

WNW
WNW

 6 / 12 mph 70 / 69°F 74% 1011 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
Sat 18
May		03:00

E
E

 3 / 5 mph 63 / 63°F 68% 1012 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 1%
Most Significant Cloud Type: medium
3%
0.0 In
09:00

SSW
SSW

 5 / 11 mph 71 / 71°F 63% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 81%
Most Significant Cloud Type: medium
7%
0.0 In
15:00

S
S

 5 / 8 mph 71 / 71°F 36% 1011 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 79%
Most Significant Cloud Type: high
78%
0.0 In
21:00

SSW
SSW

 2 / 4 mph 70 / 70°F 78% 1010 mb
Low level cloud: 0%
Mid level cloud: 0%
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