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Sandon 14 Day Long Range Forecast

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

Hertfordshire, United Kingdom

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

The forecast for Sandon in the coming two weeks is predicting 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 average minimum temperature will be 9°C, dipping to its lowest on the morning of Saturday 4th at 6°C. Expect the next 14 days have most days seeing a little rain. The indicators are that Monday 6th will have the most precipitation with an accumulation of around 13.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Thu 02
May		15:00

W
W

 7 / 9 mph 60 / 60°F 87% 1001 mb
Low level cloud: 83%
Mid level cloud: 26%
High level cloud: 32%
Most Significant Cloud Type: low
96%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

 8 / 11 mph 59 / 57°F 94% 1002 mb
Low level cloud: 77%
Mid level cloud: 18%
High level cloud: 16%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

W
W

 11 / 14 mph 53 / 50°F 96% 1004 mb
Low level cloud: 99%
Mid level cloud: 46%
High level cloud: 28%
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

W
W

 9 / 12 mph 51 / 48°F 96% 1004 mb
Low level cloud: 100%
Mid level cloud: 22%
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

 11 / 15 mph 49 / 45°F 96% 1005 mb
Low level cloud: 94%
Mid level cloud: 48%
High level cloud: 35%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WSW
WSW

 10 / 15 mph 49 / 45°F 96% 1006 mb
Low level cloud: 100%
Mid level cloud: 79%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

 13 / 18 mph 49 / 44°F 96% 1007 mb
Low level cloud: 99%
Mid level cloud: 98%
High level cloud: 69%
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 / 22 mph 49 / 43°F 93% 1008 mb
Low level cloud: 100%
Mid level cloud: 95%
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

 15 / 21 mph 48 / 42°F 92% 1010 mb
Low level cloud: 79%
Mid level cloud: 100%
High level cloud: 98%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

WSW
WSW

 10 / 15 mph 49 / 44°F 89% 1010 mb
Low level cloud: 10%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

SW
SW

 6 / 11 mph 49 / 46°F 94% 1011 mb
Low level cloud: 32%
Mid level cloud: 25%
High level cloud: 93%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 04
May		00:00

SSW
SSW

 8 / 14 mph 46 / 42°F 97% 1011 mb
Low level cloud: 36%
Mid level cloud: 1%
High level cloud: 8%
Most Significant Cloud Type: low
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

 7 / 13 mph 43 / 39°F 98% 1011 mb
Low level cloud: 48%
Mid level cloud: 4%
High level cloud: 6%
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 46 / 42°F 97% 1013 mb
Low level cloud: 41%
Mid level cloud: 4%
High level cloud: 14%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSW
SSW

 8 / 9 mph 56 / 52°F 74% 1013 mb
Low level cloud: 7%
Mid level cloud: 9%
High level cloud: 35%
Most Significant Cloud Type: low
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSW
SSW

 7 / 8 mph 62 / 60°F 54% 1012 mb
Low level cloud: 7%
Mid level cloud: 11%
High level cloud: 47%
Most Significant Cloud Type: low
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 2 / 2 mph 62 / 62°F 51% 1011 mb
Low level cloud: 6%
Mid level cloud: 87%
High level cloud: 32%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

 6 / 11 mph 55 / 53°F 81% 1011 mb
Low level cloud: 49%
Mid level cloud: 100%
High level cloud: 91%
Most Significant Cloud Type: low
94%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

 5 / 10 mph 50 / 48°F 89% 1011 mb
Low level cloud: 40%
Mid level cloud: 98%
High level cloud: 32%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 05
May		00:00

SW
SW

 3 / 6 mph 49 / 48°F 90% 1010 mb
Low level cloud: 14%
Mid level cloud: 91%
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

WSW
WSW

 4 / 7 mph 48 / 47°F 91% 1010 mb
Low level cloud: 11%
Mid level cloud: 93%
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

WSW
WSW

 3 / 5 mph 50 / 49°F 89% 1010 mb
Low level cloud: 4%
Mid level cloud: 50%
High level cloud: 100%
Most Significant Cloud Type: medium
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

 4 / 5 mph 58 / 56°F 76% 1010 mb
Low level cloud: 23%
Mid level cloud: 22%
High level cloud: 27%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

 6 / 7 mph 64 / 62°F 57% 1008 mb
Low level cloud: 17%
Mid level cloud: 7%
High level cloud: 33%
Most Significant Cloud Type: low
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SSE
SSE

 7 / 8 mph 64 / 64°F 55% 1007 mb
Low level cloud: 15%
Mid level cloud: 62%
High level cloud: 38%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SSE
SSE

 5 / 8 mph 60 / 58°F 78% 1006 mb
Low level cloud: 29%
Mid level cloud: 76%
High level cloud: 36%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

 4 / 8 mph 51 / 50°F 90% 1007 mb
Low level cloud: 6%
Mid level cloud: 31%
High level cloud: 59%
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

ESE
ESE

 6 / 11 mph 49 / 47°F 93% 1006 mb
Low level cloud: 32%
Mid level cloud: 39%
High level cloud: 100%
Most Significant Cloud Type: low
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 7 / 13 mph 49 / 46°F 91% 1006 mb
Low level cloud: 21%
Mid level cloud: 53%
High level cloud: 97%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

E
E

 7 / 12 mph 50 / 47°F 97% 1005 mb
Low level cloud: 69%
Mid level cloud: 100%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

ESE
ESE

 7 / 9 mph 56 / 54°F 89% 1005 mb
Low level cloud: 76%
Mid level cloud: 41%
High level cloud: 18%
Most Significant Cloud Type: low
93%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
12:00

E
E

 9 / 15 mph 58 / 55°F 84% 1005 mb
Low level cloud: 68%
Mid level cloud: 58%
High level cloud: 14%
Most Significant Cloud Type: low
89%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
15:00

ENE
ENE

 6 / 9 mph 59 / 56°F 84% 1006 mb
Low level cloud: 18%
Mid level cloud: 45%
High level cloud: 69%
Most Significant Cloud Type: low
42%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
18:00

ENE
ENE

 4 / 6 mph 58 / 56°F 84% 1007 mb
Low level cloud: 23%
Mid level cloud: 21%
High level cloud: 24%
Most Significant Cloud Type: low
32%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

ENE
ENE

 8 / 15 mph 49 / 45°F 96% 1009 mb
Low level cloud: 15%
Mid level cloud: 31%
High level cloud: 10%
Most Significant Cloud Type: low
26%
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 99% 1011 mb
Low level cloud: 92%
Mid level cloud: 14%
High level cloud: 9%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNE
NNE

 8 / 12 mph 49 / 45°F 98% 1013 mb
Low level cloud: 91%
Mid level cloud: 86%
High level cloud: 18%
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 / 16 mph 49 / 44°F 95% 1015 mb
Low level cloud: 34%
Mid level cloud: 43%
High level cloud: 3%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

 11 / 13 mph 56 / 52°F 81% 1017 mb
Low level cloud: 14%
Mid level cloud: 25%
High level cloud: 55%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

 10 / 12 mph 62 / 60°F 66% 1019 mb
Low level cloud: 32%
Mid level cloud: 4%
High level cloud: 3%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

N
N

 10 / 12 mph 62 / 61°F 66% 1020 mb
Low level cloud: 28%
Mid level cloud: 5%
High level cloud: 20%
Most Significant Cloud Type: low
32%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

 6 / 8 mph 61 / 59°F 81% 1022 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

 5 / 8 mph 52 / 50°F 93% 1024 mb
Low level cloud: 4%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 08
May		00:00

NNE
NNE

 0 / 1 mph 48 / 48°F 94% 1025 mb
Low level cloud: 15%
Mid level cloud: 5%
High level cloud: 64%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

 4 / 7 mph 46 / 44°F 94% 1026 mb
Low level cloud: 15%
Mid level cloud: 4%
High level cloud: 100%
Most Significant Cloud Type: low
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NE
NE

 3 / 5 mph 50 / 49°F 90% 1027 mb
Low level cloud: 9%
Mid level cloud: 1%
High level cloud: 100%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

 2 / 3 mph 57 / 57°F 80% 1027 mb
Low level cloud: 1%
Mid level cloud: 62%
High level cloud: 100%
Most Significant Cloud Type: medium
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

 5 / 6 mph 65 / 62°F 69% 1027 mb
Low level cloud: 41%
Mid level cloud: 32%
High level cloud: 18%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

 5 / 6 mph 68 / 65°F 65% 1026 mb
Low level cloud: 70%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
72%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 4 / 6 mph 65 / 63°F 76% 1026 mb
Low level cloud: 20%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
21%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

 5 / 10 mph 55 / 54°F 85% 1027 mb
Low level cloud: 13%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
15%
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

W
W

 6 / 13 mph 53 / 51°F 92% 1018 mb
Low level cloud: 6%
Mid level cloud: 82%
High level cloud: 33%
Most Significant Cloud Type: medium
100%
0.0 In
06:00

W
W

 9 / 19 mph 50 / 47°F 89% 1021 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 19%
Most Significant Cloud Type: low
100%
0.0 In
12:00

ENE
ENE

 11 / 23 mph 63 / 63°F 69% 1032 mb
Low level cloud: 21%
Mid level cloud: 4%
High level cloud: 17%
Most Significant Cloud Type: low
24%
0.0 In
18:00

NNE
NNE

 12 / 25 mph 56 / 53°F 76% 1024 mb
Low level cloud: 60%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
61%
0.0 In
Fri 10
May		00:00

ESE
ESE

 3 / 6 mph 54 / 54°F 78% 1019 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 16%
Most Significant Cloud Type: high
16%
0.0 In
06:00

SSW
SSW

 4 / 9 mph 52 / 52°F 84% 1027 mb
Low level cloud: 38%
Mid level cloud: 97%
High level cloud: 9%
Most Significant Cloud Type: low
73%
0.0 In
12:00

ESE
ESE

 11 / 23 mph 63 / 63°F 66% 1027 mb
Low level cloud: 38%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
37%
0.0 In
18:00

E
E

 9 / 19 mph 66 / 66°F 81% 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 49 / 45°F 91% 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

 6 / 13 mph 56 / 54°F 92% 1018 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
7%
0.0 In
12:00

E
E

 11 / 22 mph 66 / 66°F 63% 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

 10 / 21 mph 61 / 61°F 84% 1016 mb
Low level cloud: 1%
Mid level cloud: 11%
High level cloud: 16%
Most Significant Cloud Type: medium
13%
0.0 In
Sun 12
May		00:00

ENE
ENE

 7 / 15 mph 49 / 45°F 88% 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 / 11 mph 60 / 60°F 91% 1015 mb
Low level cloud: 3%
Mid level cloud: 3%
High level cloud: 5%
Most Significant Cloud Type: low
4%
0.0 In
12:00

E
E

 12 / 26 mph 66 / 66°F 65% 1022 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 8%
Most Significant Cloud Type: high
8%
0.0 In
18:00

SSW
SSW

 4 / 7 mph 74 / 77°F 79% 1013 mb
Low level cloud: 1%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: medium
18%
0.2 In
Mon 13
May		00:00

ENE
ENE

 7 / 15 mph 47 / 43°F 75% 1021 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 30%
Most Significant Cloud Type: high
30%
0.0 In
06:00

SW
SW

 4 / 8 mph 61 / 62°F 89% 1013 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 51%
Most Significant Cloud Type: medium
21%
0.0 In
12:00

ESE
ESE

 11 / 24 mph 66 / 66°F 69% 1017 mb
Low level cloud: 14%
Mid level cloud: 48%
High level cloud: 71%
Most Significant Cloud Type: medium
91%
0.0 In
18:00

NE
NE

 4 / 8 mph 61 / 61°F 97% 1008 mb
Low level cloud: 49%
Mid level cloud: 98%
High level cloud: 100%
Most Significant Cloud Type: low
95%
0.1 In
Tue 14
May		00:00

SSE
SSE

 6 / 12 mph 56 / 55°F 98% 1012 mb
Low level cloud: 67%
Mid level cloud: 17%
High level cloud: 62%
Most Significant Cloud Type: low
80%
0.1 In
06:00

W
W

 6 / 12 mph 58 / 57°F 96% 1005 mb
Low level cloud: 81%
Mid level cloud: 32%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
12:00

SSW
SSW

 9 / 19 mph 58 / 56°F 90% 1007 mb
Low level cloud: 69%
Mid level cloud: 51%
High level cloud: 29%
Most Significant Cloud Type: low
90%
0.0 In
18:00

ESE
ESE

 5 / 10 mph 69 / 69°F 77% 1002 mb
Low level cloud: 1%
Mid level cloud: 18%
High level cloud: 4%
Most Significant Cloud Type: medium
20%
0.0 In
Wed 15
May		00:00

S
S

 5 / 11 mph 55 / 54°F 98% 1000 mb
Low level cloud: 69%
Mid level cloud: 63%
High level cloud: 1%
Most Significant Cloud Type: low
91%
0.0 In
06:00

S
S

 12 / 24 mph 50 / 46°F 96% 994 mb
Low level cloud: 92%
Mid level cloud: 67%
High level cloud: 11%
Most Significant Cloud Type: low
100%
0.3 In
12:00

SW
SW

 15 / 32 mph 61 / 61°F 81% 995 mb
Low level cloud: 90%
Mid level cloud: 21%
High level cloud: 5%
Most Significant Cloud Type: low
97%
0.5 In
18:00

S
S

 23 / 48 mph 57 / 53°F 94% 992 mb
Low level cloud: 100%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
Thu 16
May		00:00

SW
SW

 6 / 13 mph 50 / 48°F 96% 995 mb
Low level cloud: 23%
Mid level cloud: 24%
High level cloud: 30%
Most Significant Cloud Type: low
34%
0.1 In
06:00

SSW
SSW

 17 / 37 mph 51 / 46°F 89% 999 mb
Low level cloud: 93%
Mid level cloud: 100%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.4 In
12:00

NW
NW

 9 / 20 mph 48 / 44°F 93% 1002 mb
Low level cloud: 87%
Mid level cloud: 78%
High level cloud: 91%
Most Significant Cloud Type: low
100%
0.0 In
18:00

SSE
SSE

 13 / 26 mph 57 / 54°F 79% 1003 mb
Low level cloud: 9%
Mid level cloud: 20%
High level cloud: 74%
Most Significant Cloud Type: low
25%
0.0 In
Fri 17
May		00:00

NNE
NNE

 7 / 15 mph 48 / 45°F 91% 1009 mb
Low level cloud: 75%
Mid level cloud: 56%
High level cloud: 8%
Most Significant Cloud Type: low
95%
0.0 In
06:00

SSE
SSE

 9 / 19 mph 51 / 48°F 95% 1005 mb
Low level cloud: 84%
Mid level cloud: 17%
High level cloud: 49%
Most Significant Cloud Type: low
95%
0.0 In
12:00

ENE
ENE

 9 / 19 mph 50 / 46°F 96% 1011 mb
Low level cloud: 95%
Mid level cloud: 83%
High level cloud: 80%
Most Significant Cloud Type: low
100%
0.1 In
18:00

SE
SE

 5 / 10 mph 62 / 62°F 84% 1005 mb
Low level cloud: 26%
Mid level cloud: 22%
High level cloud: 41%
Most Significant Cloud Type: low
39%
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