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Essen 14 Day Long Range Forecast

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

Germany

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

Reviewing the forecast for Essen Over the next 14 days and the average daytime maximum temperature will be around 30°C, with a high for the two weeks of 39°C expected on the afternoon of Wednesday 2nd. The mean minimum temperature will be 15°C, dipping to its lowest on the morning of Wednesday 9th at 9°C. Expect the next 14 days have mostly dry days although Wednesday 02nd and Tuesday 01st are likely to see a little rain. The current forecast indicates Tuesday 8th will have the most precipitation with an accumulation of around 2.0mm. On the whole winds are likely to be moderate. The forecast suggests the strongest wind will be on the afternoon of Wednesday 2nd, coming from a westerly direction, and reaching around 31mph.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Tue 01
Jul
19:00

N
N

3 / 6 mph 93 / 89°F 31% 1013 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSE
SSE

8 / 16 mph 82 / 81°F 38% 1013 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 02
Jul
01:00

SSW
SSW

8 / 16 mph 77 / 79°F 55% 1014 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 9%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

5 / 11 mph 73 / 77°F 61% 1014 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
07:00

SW
SW

2 / 2 mph 83 / 81°F 47% 1014 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 4%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

5 / 6 mph 94 / 91°F 32% 1014 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
13:00

SW
SW

4 / 5 mph 102 / 100°F 22% 1012 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

13 / 15 mph 104 / 102°F 17% 1009 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NNW
NNW

13 / 20 mph 72 / 76°F 87% 1015 mb
Low level cloud: 1%
Mid level cloud: 43%
High level cloud: 15%
Most Significant Cloud Type: medium
47%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
22:00

NW
NW

12 / 17 mph 68 / 68°F 95% 1017 mb
Low level cloud: 97%
Mid level cloud: 15%
High level cloud: 16%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 03
Jul
01:00

WNW
WNW

11 / 17 mph 63 / 63°F 93% 1019 mb
Low level cloud: 50%
Mid level cloud: 23%
High level cloud: 32%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

11 / 14 mph 61 / 61°F 93% 1021 mb
Low level cloud: 95%
Mid level cloud: 9%
High level cloud: 4%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NW
NW

11 / 13 mph 62 / 62°F 86% 1024 mb
Low level cloud: 100%
Mid level cloud: 0%
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

N
N

9 / 11 mph 67 / 67°F 60% 1025 mb
Low level cloud: 96%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

N
N

8 / 9 mph 74 / 76°F 48% 1026 mb
Low level cloud: 27%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

N
N

8 / 9 mph 77 / 76°F 37% 1026 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
19:00

ENE
ENE

9 / 11 mph 75 / 76°F 44% 1025 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NE
NE

6 / 12 mph 61 / 61°F 65% 1026 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 04
Jul
01:00

NNE
NNE

5 / 11 mph 56 / 55°F 80% 1027 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
04:00

WSW
WSW

1 / 2 mph 54 / 54°F 82% 1027 mb
Low level cloud: 1%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

2 / 2 mph 65 / 62°F 63% 1027 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
10:00

N
N

5 / 5 mph 76 / 75°F 38% 1027 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 5%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NW
NW

8 / 9 mph 81 / 77°F 28% 1026 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 100%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNW
NNW

6 / 6 mph 82 / 77°F 27% 1025 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 100%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NE
NE

4 / 5 mph 82 / 78°F 31% 1024 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

SE
SE

6 / 13 mph 68 / 68°F 41% 1023 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 100%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 05
Jul
01:00

S
S

6 / 13 mph 63 / 63°F 47% 1022 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 100%
Most Significant Cloud Type: medium
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

7 / 15 mph 59 / 59°F 56% 1021 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 2%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

6 / 8 mph 68 / 66°F 46% 1020 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 96%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

9 / 10 mph 79 / 76°F 32% 1019 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
13:00

W
W

12 / 13 mph 86 / 81°F 21% 1016 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 14%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

14 / 16 mph 89 / 84°F 17% 1013 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 29%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

11 / 13 mph 87 / 81°F 19% 1011 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
22:00

NW
NW

4 / 9 mph 65 / 65°F 44% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 22%
Most Significant Cloud Type: high
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 06
Jul
01:00

SW
SW

6 / 14 mph 63 / 63°F 48% 1011 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 100%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

8 / 17 mph 60 / 60°F 44% 1009 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 9%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

12 / 15 mph 67 / 65°F 46% 1009 mb
Low level cloud: 19%
Mid level cloud: 4%
High level cloud: 71%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

14 / 17 mph 72 / 76°F 65% 1008 mb
Low level cloud: 96%
Mid level cloud: 44%
High level cloud: 90%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

14 / 17 mph 66 / 66°F 77% 1009 mb
Low level cloud: 99%
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
16:00

SSW
SSW

17 / 20 mph 73 / 76°F 55% 1009 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
19:00

WNW
WNW

17 / 20 mph 74 / 75°F 38% 1009 mb
Low level cloud: 0%
Mid level cloud: 28%
High level cloud: 8%
Most Significant Cloud Type: medium
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WSW
WSW

12 / 21 mph 64 / 64°F 51% 1010 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 07
Jul
01:00

WSW
WSW

13 / 17 mph 63 / 63°F 65% 1011 mb
Low level cloud: 63%
Mid level cloud: 54%
High level cloud: 0%
Most Significant Cloud Type: low
81%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WSW
WSW

11 / 19 mph 54 / 51°F 92% 1012 mb
Low level cloud: 28%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

14 / 17 mph 60 / 59°F 72% 1013 mb
Low level cloud: 7%
Mid level cloud: 5%
High level cloud: 1%
Most Significant Cloud Type: low
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

W
W

17 / 20 mph 70 / 69°F 39% 1014 mb
Low level cloud: 3%
Mid level cloud: 41%
High level cloud: 0%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

16 / 18 mph 77 / 75°F 28% 1013 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 3%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

15 / 17 mph 80 / 76°F 24% 1012 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 18%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NW
NW

11 / 13 mph 76 / 75°F 31% 1011 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 13%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SE
SE

3 / 6 mph 59 / 59°F 53% 1012 mb
Low level cloud: 0%
Mid level cloud: 41%
High level cloud: 46%
Most Significant Cloud Type: medium
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Tue 08
Jul
01:00

S
S

2 / 4 mph 59 / 60°F 78% 1010 mb
Low level cloud: 0%
Mid level cloud: 100%
High level cloud: 10%
Most Significant Cloud Type: medium
100%
0.0 In
07:00

SW
SW

2 / 3 mph 63 / 63°F 67% 1024 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 3%
Most Significant Cloud Type: medium
4%
0.0 In
13:00

NW
NW

8 / 17 mph 77 / 76°F 31% 1013 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 100%
Most Significant Cloud Type: medium
16%
0.0 In
19:00

NW
NW

13 / 22 mph 74 / 75°F 34% 1012 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 5%
Most Significant Cloud Type: medium
21%
0.0 In
Wed 09
Jul
01:00

WSW
WSW

6 / 13 mph 51 / 49°F 92% 1018 mb
Low level cloud: 1%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
0.0 In
07:00

W
W

9 / 17 mph 55 / 53°F 85% 1021 mb
Low level cloud: 44%
Mid level cloud: 3%
High level cloud: 2%
Most Significant Cloud Type: low
44%
0.0 In
13:00

W
W

11 / 15 mph 85 / 82°F 27% 1021 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
0.0 In
19:00

NW
NW

13 / 28 mph 71 / 71°F 46% 1020 mb
Low level cloud: 6%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: medium
25%
0.0 In
Thu 10
Jul
01:00

SW
SW

7 / 13 mph 64 / 64°F 59% 1018 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
14%
0.0 In
07:00

WSW
WSW

5 / 11 mph 60 / 60°F 69% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
3%
0.0 In
13:00

W
W

16 / 29 mph 81 / 81°F 41% 1017 mb
Low level cloud: 64%
Mid level cloud: 60%
High level cloud: 21%
Most Significant Cloud Type: low
87%
0.0 In
19:00

NE
NE

7 / 15 mph 76 / 78°F 44% 1018 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 2%
Most Significant Cloud Type: medium
44%
0.0 In
Fri 11
Jul
01:00

WSW
WSW

14 / 24 mph 66 / 66°F 80% 1016 mb
Low level cloud: 35%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
38%
0.0 In
07:00

WNW
WNW

2 / 5 mph 67 / 67°F 62% 1020 mb
Low level cloud: 8%
Mid level cloud: 76%
High level cloud: 0%
Most Significant Cloud Type: medium
99%
0.0 In
13:00

W
W

16 / 28 mph 79 / 80°F 48% 1017 mb
Low level cloud: 85%
Mid level cloud: 17%
High level cloud: 3%
Most Significant Cloud Type: low
90%
0.0 In
19:00

NNE
NNE

7 / 16 mph 78 / 79°F 52% 1018 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 1%
Most Significant Cloud Type: medium
44%
0.0 In
Sat 12
Jul
01:00

WSW
WSW

3 / 6 mph 71 / 71°F 80% 1020 mb
Low level cloud: 10%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
16%
0.0 In
07:00

NE
NE

3 / 5 mph 74 / 78°F 72% 1019 mb
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 6%
Most Significant Cloud Type: medium
15%
0.0 In
13:00

W
W

13 / 23 mph 90 / 89°F 30% 1019 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 16%
Most Significant Cloud Type: medium
8%
0.0 In
19:00

NNE
NNE

2 / 5 mph 88 / 91°F 46% 1018 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 7%
Most Significant Cloud Type: medium
22%
0.0 In
Sun 13
Jul
01:00

SSE
SSE

3 / 6 mph 75 / 78°F 66% 1021 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
07:00

WSW
WSW

1 / 3 mph 75 / 78°F 65% 1020 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 100%
Most Significant Cloud Type: medium
26%
0.0 In
13:00

W
W

9 / 15 mph 99 / 98°F 23% 1020 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In
19:00

NNE
NNE

9 / 20 mph 86 / 85°F 35% 1018 mb
Low level cloud: 0%
Mid level cloud: 35%
High level cloud: 0%
Most Significant Cloud Type: medium
35%
0.0 In
Mon 14
Jul
01:00

NNE
NNE

4 / 7 mph 75 / 78°F 73% 1019 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 1%
Most Significant Cloud Type: medium
13%
0.0 In
07:00

NE
NE

4 / 9 mph 76 / 78°F 62% 1021 mb
Low level cloud: 0%
Mid level cloud: 47%
High level cloud: 0%
Most Significant Cloud Type: medium
47%
0.0 In
13:00

WNW
WNW

11 / 20 mph 99 / 99°F 24% 1016 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 2%
Most Significant Cloud Type: medium
7%
0.0 In
19:00

NE
NE

9 / 20 mph 87 / 87°F 37% 1019 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 0%
Most Significant Cloud Type: medium
29%
0.0 In
Tue 15
Jul
01:00

NE
NE

6 / 12 mph 68 / 68°F 70% 1020 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 2%
Most Significant Cloud Type: medium
4%
0.0 In
07:00

NE
NE

6 / 13 mph 76 / 79°F 67% 1019 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
13:00

NNE
NNE

11 / 21 mph 88 / 87°F 31% 1018 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 12%
Most Significant Cloud Type: medium
46%
0.0 In
19:00

NNE
NNE

13 / 28 mph 84 / 84°F 40% 1016 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 2%
Most Significant Cloud Type: high
1%
0.0 In
Wed 16
Jul
01:00

NE
NE

11 / 20 mph 65 / 65°F 50% 1021 mb
Low level cloud: 0%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
17%
0.0 In
07:00

NE
NE

9 / 18 mph 71 / 71°F 61% 1017 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
13:00

NE
NE

13 / 23 mph 86 / 82°F 16% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 19%
Most Significant Cloud Type: high
18%
0.0 In
19:00

NE
NE

14 / 29 mph 89 / 87°F 30% 1014 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
0.0 In

Other Locations Near to Essen

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