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Hillerod 14 Day Long Range Forecast

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

Denmark

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

Reviewing the forecast for Hillerod Over the next 14 days and the average daytime maximum temperature will be around 15°C, with a high for the two weeks of 19°C expected on the afternoon of Thursday 2nd. The average minimum temperature will be 8°C, dipping to its lowest on the morning of Tuesday 7th at 1°C. The fortnight ahead will have mixed overhead conditions with some days dry and some seeing a significant amount of rain. The current forecast indicates Monday 6th will have the most precipitation with an accumulation of around 5.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Thu 02
May
16:00

E
E

17 / 26 mph 65 / 64°F 63% 1010 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

E
E

17 / 30 mph 60 / 56°F 68% 1011 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 2%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

E
E

18 / 32 mph 57 / 54°F 71% 1011 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 4%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 03
May
01:00

E
E

17 / 28 mph 55 / 50°F 76% 1011 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 99%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

E
E

15 / 27 mph 53 / 49°F 81% 1011 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 32%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

E
E

16 / 24 mph 56 / 52°F 81% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 44%
Most Significant Cloud Type: high
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

E
E

18 / 25 mph 63 / 63°F 64% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 32%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

ESE
ESE

18 / 25 mph 66 / 65°F 59% 1012 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 27%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ESE
ESE

16 / 23 mph 65 / 64°F 64% 1012 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
19:00

ESE
ESE

12 / 20 mph 58 / 55°F 79% 1013 mb
Low level cloud: 26%
Mid level cloud: 13%
High level cloud: 7%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ESE
ESE

11 / 19 mph 52 / 48°F 90% 1014 mb
Low level cloud: 8%
Mid level cloud: 25%
High level cloud: 6%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 04
May
01:00

SSE
SSE

8 / 13 mph 51 / 48°F 94% 1014 mb
Low level cloud: 71%
Mid level cloud: 30%
High level cloud: 18%
Most Significant Cloud Type: low
83%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

S
S

6 / 10 mph 52 / 50°F 94% 1015 mb
Low level cloud: 98%
Mid level cloud: 44%
High level cloud: 55%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SSW
SSW

8 / 11 mph 54 / 51°F 86% 1016 mb
Low level cloud: 88%
Mid level cloud: 11%
High level cloud: 18%
Most Significant Cloud Type: low
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

7 / 10 mph 56 / 54°F 77% 1017 mb
Low level cloud: 95%
Mid level cloud: 10%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

6 / 8 mph 58 / 56°F 74% 1017 mb
Low level cloud: 74%
Mid level cloud: 37%
High level cloud: 18%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

5 / 7 mph 60 / 58°F 71% 1016 mb
Low level cloud: 61%
Mid level cloud: 23%
High level cloud: 32%
Most Significant Cloud Type: low
73%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

N
N

4 / 6 mph 56 / 54°F 85% 1015 mb
Low level cloud: 37%
Mid level cloud: 40%
High level cloud: 33%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ENE
ENE

2 / 4 mph 52 / 52°F 90% 1015 mb
Low level cloud: 8%
Mid level cloud: 32%
High level cloud: 31%
Most Significant Cloud Type: medium
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 05
May
01:00

ENE
ENE

5 / 9 mph 50 / 49°F 90% 1013 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 34%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ENE
ENE

7 / 13 mph 49 / 46°F 91% 1012 mb
Low level cloud: 3%
Mid level cloud: 46%
High level cloud: 93%
Most Significant Cloud Type: medium
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ENE
ENE

5 / 9 mph 51 / 49°F 87% 1011 mb
Low level cloud: 41%
Mid level cloud: 79%
High level cloud: 80%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

E
E

8 / 11 mph 58 / 56°F 72% 1009 mb
Low level cloud: 37%
Mid level cloud: 100%
High level cloud: 32%
Most Significant Cloud Type: low
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SE
SE

8 / 11 mph 58 / 56°F 78% 1008 mb
Low level cloud: 78%
Mid level cloud: 100%
High level cloud: 43%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ESE
ESE

4 / 6 mph 55 / 54°F 92% 1006 mb
Low level cloud: 82%
Mid level cloud: 60%
High level cloud: 98%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SSE
SSE

7 / 10 mph 52 / 49°F 96% 1005 mb
Low level cloud: 74%
Mid level cloud: 50%
High level cloud: 61%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSE
SSE

7 / 10 mph 50 / 48°F 97% 1005 mb
Low level cloud: 87%
Mid level cloud: 43%
High level cloud: 18%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 06
May
01:00

S
S

5 / 7 mph 50 / 48°F 98% 1005 mb
Low level cloud: 74%
Mid level cloud: 52%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
04:00

SSW
SSW

5 / 7 mph 49 / 47°F 97% 1005 mb
Low level cloud: 80%
Mid level cloud: 75%
High level cloud: 17%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

E
E

3 / 4 mph 50 / 50°F 93% 1005 mb
Low level cloud: 97%
Mid level cloud: 71%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ENE
ENE

13 / 17 mph 48 / 43°F 92% 1007 mb
Low level cloud: 98%
Mid level cloud: 59%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

ENE
ENE

12 / 17 mph 47 / 41°F 90% 1009 mb
Low level cloud: 95%
Mid level cloud: 62%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

ENE
ENE

15 / 21 mph 46 / 39°F 86% 1011 mb
Low level cloud: 96%
Mid level cloud: 32%
High level cloud: 33%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

E
E

11 / 15 mph 45 / 39°F 83% 1014 mb
Low level cloud: 72%
Mid level cloud: 90%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ENE
ENE

9 / 15 mph 43 / 38°F 78% 1016 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 12%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 07
May
01:00

ENE
ENE

10 / 17 mph 39 / 33°F 76% 1018 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 19%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ENE
ENE

11 / 19 mph 36 / 28°F 76% 1020 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 17%
Most Significant Cloud Type: high
16%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ENE
ENE

12 / 16 mph 40 / 33°F 69% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

ENE
ENE

10 / 12 mph 49 / 44°F 50% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

ENE
ENE

8 / 9 mph 54 / 51°F 43% 1024 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

E
E

3 / 4 mph 55 / 54°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
19:00

SSW
SSW

6 / 6 mph 54 / 52°F 68% 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
22:00

S
S

6 / 8 mph 46 / 43°F 69% 1030 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: high
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 08
May
01:00

S
S

4 / 8 mph 41 / 39°F 67% 1030 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 1%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

S
S

4 / 8 mph 41 / 38°F 68% 1031 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

S
S

4 / 6 mph 46 / 43°F 60% 1032 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 35%
Most Significant Cloud Type: high
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

S
S

5 / 7 mph 52 / 50°F 48% 1031 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
13:00

S
S

7 / 9 mph 55 / 53°F 45% 1030 mb
Low level cloud: 0%
Mid level cloud: 93%
High level cloud: 1%
Most Significant Cloud Type: medium
92%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SSW
SSW

6 / 9 mph 56 / 53°F 47% 1029 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

SW
SW

4 / 5 mph 50 / 49°F 68% 1029 mb
Low level cloud: 0%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SSW
SSW

6 / 11 mph 46 / 43°F 73% 1028 mb
Low level cloud: 0%
Mid level cloud: 64%
High level cloud: 100%
Most Significant Cloud Type: medium
68%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Thu 09
May
01:00

NE
NE

2 / 2 mph 52 / 53°F 70% 1014 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 21%
Most Significant Cloud Type: medium
45%
0.0 In
07:00

SSE
SSE

11 / 17 mph 44 / 38°F 96% 1017 mb
Low level cloud: 99%
Mid level cloud: 51%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
13:00

NW
NW

21 / 27 mph 54 / 48°F 64% 1024 mb
Low level cloud: 1%
Mid level cloud: 10%
High level cloud: 22%
Most Significant Cloud Type: medium
12%
0.0 In
19:00

NE
NE

5 / 7 mph 55 / 54°F 73% 1016 mb
Low level cloud: 3%
Mid level cloud: 28%
High level cloud: 7%
Most Significant Cloud Type: medium
36%
0.0 In
Fri 10
May
01:00

W
W

10 / 15 mph 46 / 41°F 77% 1017 mb
Low level cloud: 0%
Mid level cloud: 98%
High level cloud: 0%
Most Significant Cloud Type: medium
98%
0.0 In
07:00

NNW
NNW

20 / 29 mph 47 / 40°F 70% 1020 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
13:00

WNW
WNW

6 / 9 mph 56 / 54°F 68% 1030 mb
Low level cloud: 4%
Mid level cloud: 17%
High level cloud: 15%
Most Significant Cloud Type: medium
30%
0.0 In
19:00

WNW
WNW

6 / 9 mph 59 / 59°F 89% 1018 mb
Low level cloud: 10%
Mid level cloud: 3%
High level cloud: 8%
Most Significant Cloud Type: low
12%
0.0 In
Sat 11
May
01:00

SW
SW

5 / 7 mph 51 / 49°F 90% 1028 mb
Low level cloud: 0%
Mid level cloud: 62%
High level cloud: 100%
Most Significant Cloud Type: medium
65%
0.0 In
07:00

NNW
NNW

6 / 8 mph 57 / 56°F 83% 1018 mb
Low level cloud: 1%
Mid level cloud: 10%
High level cloud: 100%
Most Significant Cloud Type: medium
17%
0.0 In
13:00

W
W

12 / 17 mph 54 / 50°F 48% 1025 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
0.0 In
19:00

SSE
SSE

7 / 11 mph 56 / 54°F 74% 1020 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
0.0 In
Sun 12
May
01:00

W
W

14 / 23 mph 49 / 43°F 90% 1020 mb
Low level cloud: 20%
Mid level cloud: 6%
High level cloud: 32%
Most Significant Cloud Type: low
26%
0.0 In
07:00

WSW
WSW

6 / 9 mph 53 / 52°F 84% 1020 mb
Low level cloud: 8%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: medium
64%
0.0 In
13:00

WNW
WNW

11 / 16 mph 58 / 56°F 72% 1018 mb
Low level cloud: 35%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
36%
0.0 In
19:00

NNW
NNW

4 / 6 mph 60 / 60°F 77% 1018 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 10%
Most Significant Cloud Type: medium
46%
0.0 In
Mon 13
May
01:00

ESE
ESE

4 / 6 mph 56 / 55°F 86% 1019 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
07:00

SE
SE

6 / 9 mph 53 / 51°F 81% 1017 mb
Low level cloud: 1%
Mid level cloud: 49%
High level cloud: 100%
Most Significant Cloud Type: medium
54%
0.0 In
13:00

SSE
SSE

9 / 12 mph 64 / 64°F 63% 1018 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
19:00

SSE
SSE

2 / 3 mph 61 / 61°F 80% 1015 mb
Low level cloud: 6%
Mid level cloud: 20%
High level cloud: 11%
Most Significant Cloud Type: medium
38%
0.0 In
Tue 14
May
01:00

SW
SW

7 / 12 mph 51 / 49°F 94% 1013 mb
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
3%
0.0 In
07:00

ESE
ESE

3 / 4 mph 56 / 57°F 87% 1013 mb
Low level cloud: 92%
Mid level cloud: 26%
High level cloud: 8%
Most Significant Cloud Type: low
100%
0.0 In
13:00

W
W

9 / 12 mph 61 / 61°F 58% 1008 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 50%
Most Significant Cloud Type: medium
4%
0.0 In
19:00

SE
SE

8 / 12 mph 58 / 57°F 80% 1012 mb
Low level cloud: 20%
Mid level cloud: 8%
High level cloud: 32%
Most Significant Cloud Type: low
26%
0.0 In
Wed 15
May
01:00

SW
SW

6 / 11 mph 53 / 51°F 90% 1001 mb
Low level cloud: 0%
Mid level cloud: 83%
High level cloud: 100%
Most Significant Cloud Type: medium
87%
0.0 In
07:00

ESE
ESE

17 / 26 mph 52 / 46°F 65% 1011 mb
Low level cloud: 0%
Mid level cloud: 56%
High level cloud: 100%
Most Significant Cloud Type: medium
60%
0.0 In
13:00

W
W

9 / 14 mph 54 / 51°F 96% 996 mb
Low level cloud: 94%
Mid level cloud: 41%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.5 In
19:00

E
E

18 / 28 mph 50 / 44°F 65% 1010 mb
Low level cloud: 0%
Mid level cloud: 93%
High level cloud: 100%
Most Significant Cloud Type: medium
96%
0.0 In
Thu 16
May
01:00

SSW
SSW

10 / 15 mph 53 / 50°F 97% 996 mb
Low level cloud: 97%
Mid level cloud: 46%
High level cloud: 20%
Most Significant Cloud Type: low
100%
0.0 In
07:00

E
E

18 / 28 mph 44 / 36°F 93% 1008 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.6 In
13:00

SW
SW

14 / 23 mph 58 / 55°F 83% 996 mb
Low level cloud: 63%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
79%
0.0 In
19:00

E
E

7 / 10 mph 48 / 45°F 94% 1009 mb
Low level cloud: 100%
Mid level cloud: 66%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.4 In
Fri 17
May
01:00

WSW
WSW

11 / 21 mph 50 / 46°F 95% 998 mb
Low level cloud: 93%
Mid level cloud: 37%
High level cloud: 33%
Most Significant Cloud Type: low
100%
0.2 In
07:00

SSE
SSE

4 / 6 mph 47 / 46°F 94% 1009 mb
Low level cloud: 99%
Mid level cloud: 45%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.0 In
13:00

W
W

18 / 37 mph 52 / 47°F 57% 1008 mb
Low level cloud: 45%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
44%
0.0 In
19:00

SE
SE

3 / 4 mph 57 / 58°F 83% 1009 mb
Low level cloud: 31%
Mid level cloud: 30%
High level cloud: 12%
Most Significant Cloud Type: low
42%
0.0 In

Other Locations Near to Hillerod

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