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Harpenden 14 Day Long Range Forecast

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

Hertfordshire, United Kingdom

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

For Harpenden in the coming two weeks the average daytime maximum temperature will be around 17°C, with a high for the two weeks of 20°C expected on the afternoon of Thursday 9th. The mean minimum temperature will be 9°C, dipping to its lowest on the morning of Saturday 4th at 5°C. The next 14 days will have some days seeing a little precipitation and some days with rain. The indicators are that Monday 6th will have the most precipitation with an accumulation of around 11.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Thu 02
May		18:00

WSW
WSW

 9 / 12 mph 57 / 55°F 94% 1002 mb
Low level cloud: 84%
Mid level cloud: 25%
High level cloud: 19%
Most Significant Cloud Type: low
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

 12 / 16 mph 52 / 48°F 96% 1004 mb
Low level cloud: 97%
Mid level cloud: 21%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 03
May		00:00

WSW
WSW

 11 / 14 mph 50 / 46°F 96% 1005 mb
Low level cloud: 100%
Mid level cloud: 19%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

 12 / 16 mph 49 / 44°F 97% 1005 mb
Low level cloud: 94%
Mid level cloud: 82%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WSW
WSW

 12 / 17 mph 49 / 44°F 97% 1006 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

 15 / 21 mph 48 / 42°F 96% 1007 mb
Low level cloud: 99%
Mid level cloud: 100%
High level cloud: 97%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 16 / 23 mph 48 / 42°F 93% 1009 mb
Low level cloud: 94%
Mid level cloud: 100%
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

WSW
WSW

 14 / 19 mph 48 / 42°F 90% 1010 mb
Low level cloud: 81%
Mid level cloud: 100%
High level cloud: 91%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WSW
WSW

 9 / 14 mph 48 / 44°F 89% 1010 mb
Low level cloud: 4%
Mid level cloud: 100%
High level cloud: 98%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

 7 / 11 mph 48 / 46°F 94% 1011 mb
Low level cloud: 33%
Mid level cloud: 37%
High level cloud: 100%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 04
May		00:00

SW
SW

 7 / 12 mph 46 / 43°F 97% 1012 mb
Low level cloud: 22%
Mid level cloud: 1%
High level cloud: 18%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

 6 / 13 mph 43 / 39°F 98% 1011 mb
Low level cloud: 43%
Mid level cloud: 4%
High level cloud: 7%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SSW
SSW

 6 / 10 mph 45 / 41°F 96% 1013 mb
Low level cloud: 29%
Mid level cloud: 4%
High level cloud: 16%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

 8 / 9 mph 55 / 51°F 75% 1013 mb
Low level cloud: 11%
Mid level cloud: 8%
High level cloud: 32%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

 7 / 8 mph 61 / 59°F 55% 1012 mb
Low level cloud: 15%
Mid level cloud: 9%
High level cloud: 32%
Most Significant Cloud Type: low
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 6 / 7 mph 61 / 61°F 53% 1011 mb
Low level cloud: 14%
Mid level cloud: 64%
High level cloud: 20%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

 1 / 2 mph 58 / 58°F 73% 1011 mb
Low level cloud: 20%
Mid level cloud: 100%
High level cloud: 45%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSW
SSW

 2 / 4 mph 52 / 52°F 82% 1011 mb
Low level cloud: 52%
Mid level cloud: 100%
High level cloud: 32%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 05
May		00:00

WSW
WSW

 5 / 9 mph 49 / 47°F 88% 1011 mb
Low level cloud: 13%
Mid level cloud: 98%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

 4 / 7 mph 48 / 47°F 90% 1010 mb
Low level cloud: 2%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: medium
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SW
SW

 2 / 4 mph 49 / 49°F 88% 1010 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 98%
Most Significant Cloud Type: medium
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

 5 / 6 mph 58 / 55°F 72% 1010 mb
Low level cloud: 20%
Mid level cloud: 15%
High level cloud: 20%
Most Significant Cloud Type: low
27%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

S
S

 5 / 6 mph 64 / 62°F 54% 1008 mb
Low level cloud: 28%
Mid level cloud: 5%
High level cloud: 99%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

 6 / 7 mph 64 / 63°F 53% 1007 mb
Low level cloud: 7%
Mid level cloud: 83%
High level cloud: 89%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSW
SSW

 5 / 7 mph 60 / 58°F 79% 1006 mb
Low level cloud: 39%
Mid level cloud: 24%
High level cloud: 49%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

 2 / 4 mph 52 / 53°F 89% 1007 mb
Low level cloud: 7%
Mid level cloud: 28%
High level cloud: 92%
Most Significant Cloud Type: medium
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 06
May		00:00

E
E

 5 / 10 mph 50 / 48°F 94% 1006 mb
Low level cloud: 15%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
93%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

 8 / 13 mph 50 / 47°F 91% 1005 mb
Low level cloud: 21%
Mid level cloud: 62%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 8 / 12 mph 50 / 47°F 98% 1005 mb
Low level cloud: 84%
Mid level cloud: 63%
High level cloud: 47%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

SE
SE

 8 / 10 mph 56 / 54°F 86% 1005 mb
Low level cloud: 92%
Mid level cloud: 21%
High level cloud: 21%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

E
E

 6 / 9 mph 62 / 60°F 71% 1005 mb
Low level cloud: 28%
Mid level cloud: 44%
High level cloud: 12%
Most Significant Cloud Type: low
45%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

NE
NE

 7 / 11 mph 57 / 54°F 87% 1006 mb
Low level cloud: 45%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
72%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

NNE
NNE

 5 / 9 mph 57 / 54°F 87% 1007 mb
Low level cloud: 40%
Mid level cloud: 31%
High level cloud: 19%
Most Significant Cloud Type: low
53%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

NE
NE

 6 / 12 mph 50 / 47°F 94% 1009 mb
Low level cloud: 10%
Mid level cloud: 29%
High level cloud: 11%
Most Significant Cloud Type: medium
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 07
May		00:00

NE
NE

 7 / 13 mph 47 / 44°F 98% 1011 mb
Low level cloud: 75%
Mid level cloud: 14%
High level cloud: 10%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

 9 / 12 mph 49 / 45°F 97% 1013 mb
Low level cloud: 99%
Mid level cloud: 44%
High level cloud: 30%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

 11 / 15 mph 49 / 44°F 95% 1015 mb
Low level cloud: 32%
Mid level cloud: 31%
High level cloud: 6%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

 12 / 14 mph 56 / 52°F 78% 1017 mb
Low level cloud: 11%
Mid level cloud: 29%
High level cloud: 10%
Most Significant Cloud Type: low
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

 10 / 12 mph 62 / 60°F 65% 1019 mb
Low level cloud: 28%
Mid level cloud: 5%
High level cloud: 3%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

 9 / 11 mph 62 / 61°F 62% 1020 mb
Low level cloud: 74%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
75%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 6 / 8 mph 62 / 59°F 78% 1022 mb
Low level cloud: 43%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

 5 / 7 mph 54 / 53°F 91% 1024 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
Wed 08
May		00:00

NE
NE

 2 / 3 mph 49 / 49°F 92% 1025 mb
Low level cloud: 7%
Mid level cloud: 4%
High level cloud: 90%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

N
N

 3 / 5 mph 47 / 47°F 92% 1026 mb
Low level cloud: 7%
Mid level cloud: 3%
High level cloud: 93%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 2 / 4 mph 52 / 50°F 88% 1027 mb
Low level cloud: 5%
Mid level cloud: 2%
High level cloud: 100%
Most Significant Cloud Type: medium
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

 2 / 2 mph 57 / 58°F 79% 1027 mb
Low level cloud: 1%
Mid level cloud: 71%
High level cloud: 98%
Most Significant Cloud Type: medium
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

 4 / 5 mph 66 / 63°F 67% 1027 mb
Low level cloud: 38%
Mid level cloud: 26%
High level cloud: 34%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

 5 / 6 mph 68 / 65°F 63% 1026 mb
Low level cloud: 37%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
39%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 5 / 6 mph 67 / 64°F 76% 1026 mb
Low level cloud: 10%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

 5 / 9 mph 55 / 55°F 86% 1027 mb
Low level cloud: 47%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: low
50%
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		00:00

WNW
WNW

 7 / 14 mph 55 / 54°F 91% 1018 mb
Low level cloud: 27%
Mid level cloud: 79%
High level cloud: 33%
Most Significant Cloud Type: medium
100%
0.0 In
06:00

W
W

 10 / 21 mph 51 / 48°F 87% 1021 mb
Low level cloud: 98%
Mid level cloud: 99%
High level cloud: 30%
Most Significant Cloud Type: low
100%
0.0 In
12:00

ENE
ENE

 12 / 25 mph 64 / 64°F 67% 1031 mb
Low level cloud: 9%
Mid level cloud: 3%
High level cloud: 20%
Most Significant Cloud Type: low
12%
0.0 In
18:00

NE
NE

 12 / 25 mph 56 / 53°F 78% 1024 mb
Low level cloud: 42%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
43%
0.0 In
Fri 10
May		00:00

ESE
ESE

 3 / 6 mph 58 / 59°F 78% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 12%
Most Significant Cloud Type: high
11%
0.0 In
06:00

SW
SW

 4 / 8 mph 54 / 53°F 86% 1027 mb
Low level cloud: 34%
Mid level cloud: 84%
High level cloud: 8%
Most Significant Cloud Type: low
63%
0.0 In
12:00

ESE
ESE

 11 / 22 mph 65 / 65°F 62% 1027 mb
Low level cloud: 22%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
22%
0.0 In
18:00

E
E

 9 / 20 mph 69 / 69°F 76% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Sat 11
May		00:00

ENE
ENE

 7 / 15 mph 52 / 50°F 89% 1025 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

ENE
ENE

 7 / 14 mph 57 / 55°F 91% 1018 mb
Low level cloud: 8%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
8%
0.0 In
12:00

E
E

 11 / 23 mph 68 / 68°F 60% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
18:00

E
E

 11 / 22 mph 64 / 65°F 80% 1016 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 21%
Most Significant Cloud Type: medium
15%
0.0 In
Sun 12
May		00:00

ENE
ENE

 7 / 15 mph 53 / 50°F 85% 1023 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
06:00

ESE
ESE

 5 / 10 mph 63 / 63°F 91% 1015 mb
Low level cloud: 5%
Mid level cloud: 5%
High level cloud: 33%
Most Significant Cloud Type: low
10%
0.0 In
12:00

E
E

 12 / 26 mph 67 / 67°F 62% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
18:00

WSW
WSW

 4 / 9 mph 72 / 72°F 79% 1013 mb
Low level cloud: 5%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
28%
0.2 In
Mon 13
May		00:00

ENE
ENE

 7 / 16 mph 52 / 50°F 74% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 4%
Most Significant Cloud Type: high
3%
0.0 In
06:00

SSW
SSW

 3 / 6 mph 64 / 64°F 87% 1013 mb
Low level cloud: 1%
Mid level cloud: 15%
High level cloud: 79%
Most Significant Cloud Type: medium
20%
0.0 In
12:00

ESE
ESE

 11 / 22 mph 68 / 68°F 65% 1017 mb
Low level cloud: 32%
Mid level cloud: 44%
High level cloud: 32%
Most Significant Cloud Type: low
51%
0.0 In
18:00

NE
NE

 3 / 6 mph 61 / 61°F 97% 1008 mb
Low level cloud: 55%
Mid level cloud: 93%
High level cloud: 99%
Most Significant Cloud Type: low
99%
0.1 In
Tue 14
May		00:00

S
S

 6 / 13 mph 58 / 57°F 98% 1012 mb
Low level cloud: 84%
Mid level cloud: 30%
High level cloud: 98%
Most Significant Cloud Type: low
100%
0.1 In
06:00

W
W

 6 / 12 mph 57 / 56°F 96% 1005 mb
Low level cloud: 71%
Mid level cloud: 30%
High level cloud: 100%
Most Significant Cloud Type: low
93%
0.2 In
12:00

SSW
SSW

 9 / 19 mph 57 / 55°F 94% 1007 mb
Low level cloud: 59%
Mid level cloud: 44%
High level cloud: 12%
Most Significant Cloud Type: low
75%
0.0 In
18:00

SSE
SSE

 3 / 6 mph 69 / 69°F 71% 1002 mb
Low level cloud: 52%
Mid level cloud: 27%
High level cloud: 1%
Most Significant Cloud Type: low
61%
0.0 In
Wed 15
May		00:00

SSW
SSW

 4 / 8 mph 56 / 56°F 99% 1000 mb
Low level cloud: 79%
Mid level cloud: 53%
High level cloud: 19%
Most Significant Cloud Type: low
99%
0.0 In
06:00

S
S

 11 / 22 mph 51 / 47°F 96% 994 mb
Low level cloud: 93%
Mid level cloud: 45%
High level cloud: 13%
Most Significant Cloud Type: low
100%
0.4 In
12:00

SW
SW

 15 / 32 mph 60 / 60°F 81% 995 mb
Low level cloud: 89%
Mid level cloud: 24%
High level cloud: 4%
Most Significant Cloud Type: low
98%
0.3 In
18:00

S
S

 23 / 48 mph 56 / 51°F 96% 991 mb
Low level cloud: 100%
Mid level cloud: 99%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.3 In
Thu 16
May		00:00

SW
SW

 6 / 13 mph 52 / 50°F 97% 995 mb
Low level cloud: 27%
Mid level cloud: 24%
High level cloud: 33%
Most Significant Cloud Type: low
39%
0.1 In
06:00

SSW
SSW

 17 / 36 mph 50 / 45°F 90% 998 mb
Low level cloud: 88%
Mid level cloud: 97%
High level cloud: 99%
Most Significant Cloud Type: low
100%
0.5 In
12:00

NW
NW

 9 / 20 mph 49 / 45°F 90% 1002 mb
Low level cloud: 91%
Mid level cloud: 64%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
18:00

SSE
SSE

 13 / 26 mph 58 / 55°F 78% 1003 mb
Low level cloud: 22%
Mid level cloud: 29%
High level cloud: 82%
Most Significant Cloud Type: low
42%
0.0 In
Fri 17
May		00:00

NNE
NNE

 8 / 16 mph 49 / 45°F 92% 1009 mb
Low level cloud: 85%
Mid level cloud: 66%
High level cloud: 8%
Most Significant Cloud Type: low
100%
0.0 In
06:00

SSE
SSE

 9 / 19 mph 52 / 49°F 94% 1005 mb
Low level cloud: 97%
Mid level cloud: 24%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.0 In
12:00

ENE
ENE

 10 / 21 mph 51 / 47°F 94% 1011 mb
Low level cloud: 92%
Mid level cloud: 85%
High level cloud: 53%
Most Significant Cloud Type: low
100%
0.1 In
18:00

SE
SE

 4 / 9 mph 62 / 62°F 82% 1005 mb
Low level cloud: 35%
Mid level cloud: 22%
High level cloud: 78%
Most Significant Cloud Type: low
52%
0.1 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