Weather2 on Twitter Weather2 on Facebook Weather2 on YouTube Weather2 blog

Local Weather

Wheathampstead 14 Day Long Range Forecast

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

Hertfordshire, United Kingdom

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

The forecast for Wheathampstead in the coming two weeks is predicting the average daytime maximum temperature will be around 21°C, with a high for the two weeks of 27°C expected on the afternoon of Sunday 16th. The average minimum temperature will be 15°C, dipping to its lowest on the morning of Monday 24th at 9°C. The fortnight ahead will have some days seeing a little precipitation and some days with rain. Predictions are Friday 14th will have the most precipitation with an accumulation of around 14.0mm. On the whole winds are likely to be moderate.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 14
Aug
18:00

N
N

9 / 16 mph 72 / 70°F 88% 1013 mb
Low level cloud: 44%
Mid level cloud: 25%
High level cloud: 26%
Most Significant Cloud Type: low
55%
Expect 0.14 In of precipitation over the past 3 hours.
0.14 In
21:00

NNE
NNE

12 / 23 mph 66 / 66°F 92% 1014 mb
Low level cloud: 45%
Mid level cloud: 67%
High level cloud: 55%
Most Significant Cloud Type: low
74%
Expect 0.25 In of precipitation over the past 3 hours.
0.25 In
Sat 15
Aug
00:00

NNE
NNE

12 / 19 mph 63 / 63°F 91% 1014 mb
Low level cloud: 91%
Mid level cloud: 45%
High level cloud: 35%
Most Significant Cloud Type: low
100%
Expect 0.12 In of precipitation over the past 3 hours.
0.12 In
03:00

NNE
NNE

11 / 16 mph 62 / 62°F 92% 1013 mb
Low level cloud: 74%
Mid level cloud: 46%
High level cloud: 58%
Most Significant Cloud Type: low
96%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
06:00

NNE
NNE

11 / 15 mph 62 / 61°F 93% 1014 mb
Low level cloud: 99%
Mid level cloud: 54%
High level cloud: 16%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

NE
NE

10 / 14 mph 63 / 63°F 93% 1014 mb
Low level cloud: 99%
Mid level cloud: 73%
High level cloud: 28%
Most Significant Cloud Type: low
100%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
12:00

NNE
NNE

10 / 13 mph 67 / 67°F 87% 1014 mb
Low level cloud: 89%
Mid level cloud: 44%
High level cloud: 18%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

NNE
NNE

12 / 16 mph 70 / 70°F 82% 1014 mb
Low level cloud: 85%
Mid level cloud: 42%
High level cloud: 93%
Most Significant Cloud Type: low
100%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
18:00

NNE
NNE

12 / 17 mph 67 / 67°F 88% 1013 mb
Low level cloud: 89%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.06 In of precipitation over the past 3 hours.
0.06 In
21:00

NNE
NNE

10 / 15 mph 64 / 64°F 95% 1014 mb
Low level cloud: 77%
Mid level cloud: 35%
High level cloud: 27%
Most Significant Cloud Type: low
92%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Sun 16
Aug
00:00

NNE
NNE

7 / 11 mph 64 / 64°F 98% 1012 mb
Low level cloud: 91%
Mid level cloud: 30%
High level cloud: 32%
Most Significant Cloud Type: low
100%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

ENE
ENE

5 / 9 mph 63 / 63°F 97% 1012 mb
Low level cloud: 81%
Mid level cloud: 46%
High level cloud: 12%
Most Significant Cloud Type: low
98%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

ESE
ESE

7 / 10 mph 65 / 63°F 93% 1012 mb
Low level cloud: 54%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
81%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

SE
SE

6 / 8 mph 72 / 69°F 76% 1012 mb
Low level cloud: 45%
Mid level cloud: 15%
High level cloud: 20%
Most Significant Cloud Type: low
52%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

ESE
ESE

6 / 7 mph 78 / 77°F 54% 1011 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 8%
Most Significant Cloud Type: medium
44%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

ESE
ESE

7 / 9 mph 80 / 79°F 46% 1009 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 31%
Most Significant Cloud Type: medium
22%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

ESE
ESE

10 / 15 mph 74 / 77°F 68% 1008 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
49%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
21:00

ESE
ESE

7 / 15 mph 67 / 67°F 86% 1008 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: medium
49%
Expect 0.18 In of precipitation over the past 3 hours.
0.18 In
Mon 17
Aug
00:00

SE
SE

6 / 13 mph 65 / 65°F 92% 1008 mb
Low level cloud: 29%
Mid level cloud: 5%
High level cloud: 9%
Most Significant Cloud Type: low
32%
Expect 0.25 In of precipitation over the past 3 hours.
0.25 In
03:00

SSW
SSW

5 / 7 mph 64 / 64°F 90% 1007 mb
Low level cloud: 92%
Mid level cloud: 6%
High level cloud: 17%
Most Significant Cloud Type: low
96%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
06:00

SW
SW

10 / 13 mph 63 / 62°F 92% 1007 mb
Low level cloud: 50%
Mid level cloud: 6%
High level cloud: 98%
Most Significant Cloud Type: low
63%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

WSW
WSW

11 / 12 mph 68 / 66°F 77% 1008 mb
Low level cloud: 12%
Mid level cloud: 22%
High level cloud: 81%
Most Significant Cloud Type: low
29%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

WSW
WSW

9 / 11 mph 73 / 76°F 61% 1007 mb
Low level cloud: 3%
Mid level cloud: 12%
High level cloud: 100%
Most Significant Cloud Type: medium
24%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SW
SW

15 / 19 mph 73 / 76°F 62% 1007 mb
Low level cloud: 25%
Mid level cloud: 32%
High level cloud: 32%
Most Significant Cloud Type: low
40%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
18:00

SW
SW

13 / 19 mph 67 / 67°F 76% 1007 mb
Low level cloud: 77%
Mid level cloud: 45%
High level cloud: 22%
Most Significant Cloud Type: low
95%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
21:00

SW
SW

11 / 18 mph 63 / 63°F 85% 1008 mb
Low level cloud: 33%
Mid level cloud: 23%
High level cloud: 50%
Most Significant Cloud Type: low
46%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
Tue 18
Aug
00:00

WSW
WSW

13 / 19 mph 60 / 60°F 90% 1008 mb
Low level cloud: 36%
Mid level cloud: 17%
High level cloud: 11%
Most Significant Cloud Type: low
43%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

WSW
WSW

12 / 17 mph 59 / 59°F 91% 1008 mb
Low level cloud: 58%
Mid level cloud: 20%
High level cloud: 13%
Most Significant Cloud Type: low
66%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

WSW
WSW

12 / 17 mph 60 / 60°F 91% 1009 mb
Low level cloud: 80%
Mid level cloud: 18%
High level cloud: 17%
Most Significant Cloud Type: low
88%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

WSW
WSW

12 / 15 mph 64 / 64°F 80% 1010 mb
Low level cloud: 81%
Mid level cloud: 22%
High level cloud: 94%
Most Significant Cloud Type: low
99%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
12:00

WSW
WSW

14 / 16 mph 70 / 69°F 69% 1009 mb
Low level cloud: 54%
Mid level cloud: 24%
High level cloud: 2%
Most Significant Cloud Type: low
62%
Expect 0.01 In of precipitation over the past 3 hours.
0.01 In
15:00

WSW
WSW

15 / 19 mph 72 / 76°F 66% 1009 mb
Low level cloud: 34%
Mid level cloud: 26%
High level cloud: 10%
Most Significant Cloud Type: low
44%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
18:00

W
W

12 / 17 mph 69 / 68°F 73% 1009 mb
Low level cloud: 15%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
21%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
21:00

WSW
WSW

11 / 15 mph 63 / 63°F 82% 1010 mb
Low level cloud: 7%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
8%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Wed 19
Aug
00:00

W
W

8 / 11 mph 60 / 60°F 90% 1010 mb
Low level cloud: 11%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
15%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
03:00

WSW
WSW

8 / 11 mph 58 / 57°F 91% 1009 mb
Low level cloud: 7%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: low
11%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
06:00

WSW
WSW

8 / 12 mph 58 / 56°F 91% 1009 mb
Low level cloud: 24%
Mid level cloud: 12%
High level cloud: 33%
Most Significant Cloud Type: low
31%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
09:00

WSW
WSW

8 / 10 mph 67 / 65°F 72% 1009 mb
Low level cloud: 9%
Mid level cloud: 8%
High level cloud: 33%
Most Significant Cloud Type: low
15%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SW
SW

8 / 9 mph 72 / 76°F 59% 1008 mb
Low level cloud: 17%
Mid level cloud: 27%
High level cloud: 95%
Most Significant Cloud Type: low
37%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SW
SW

6 / 8 mph 75 / 76°F 57% 1006 mb
Low level cloud: 39%
Mid level cloud: 31%
High level cloud: 32%
Most Significant Cloud Type: low
53%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

SSW
SSW

7 / 10 mph 74 / 76°F 60% 1004 mb
Low level cloud: 2%
Mid level cloud: 25%
High level cloud: 0%
Most Significant Cloud Type: medium
29%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SSE
SSE

8 / 14 mph 66 / 66°F 68% 1003 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 21%
Most Significant Cloud Type: medium
24%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
Thu 20
Aug
00:00

SE
SE

9 / 15 mph 63 / 64°F 81% 999 mb
Low level cloud: 49%
Mid level cloud: 75%
High level cloud: 1%
Most Significant Cloud Type: low
75%
Expect 0.04 In of precipitation over the past 3 hours.
0.04 In
03:00

S
S

16 / 26 mph 65 / 65°F 82% 997 mb
Low level cloud: 83%
Mid level cloud: 69%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.03 In of precipitation over the past 3 hours.
0.03 In
06:00

WSW
WSW

16 / 22 mph 62 / 61°F 83% 998 mb
Low level cloud: 39%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
39%
Expect 0.02 In of precipitation over the past 3 hours.
0.02 In
09:00

WSW
WSW

15 / 17 mph 64 / 62°F 67% 1002 mb
Low level cloud: 19%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
19%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
12:00

SW
SW

17 / 20 mph 69 / 67°F 54% 1003 mb
Low level cloud: 28%
Mid level cloud: 0%
High level cloud: 18%
Most Significant Cloud Type: low
30%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
15:00

SW
SW

21 / 23 mph 70 / 69°F 54% 1002 mb
Low level cloud: 35%
Mid level cloud: 18%
High level cloud: 2%
Most Significant Cloud Type: low
41%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
18:00

SW
SW

20 / 30 mph 64 / 64°F 67% 1001 mb
Low level cloud: 24%
Mid level cloud: 17%
High level cloud: 8%
Most Significant Cloud Type: low
31%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
21:00

SW
SW

20 / 30 mph 60 / 60°F 74% 1001 mb
Low level cloud: 23%
Mid level cloud: 13%
High level cloud: 32%
Most Significant Cloud Type: low
31%
Expect 0.00 In of precipitation over the past 3 hours.
0.00 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityPressureCloud AmountPrecip AmountWeather
Fri 21
Aug
00:00

WSW
WSW

11 / 18 mph 55 / 51°F 86% 1002 mb
Low level cloud: 5%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
29%
0.00 In
06:00

WSW
WSW

15 / 21 mph 55 / 51°F 81% 999 mb
Low level cloud: 16%
Mid level cloud: 37%
High level cloud: 0%
Most Significant Cloud Type: low
28%
0.00 In
12:00

SSW
SSW

12 / 14 mph 80 / 81°F 47% 1011 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 19%
Most Significant Cloud Type: medium
14%
0.00 In
18:00

WSW
WSW

15 / 22 mph 62 / 62°F 61% 1004 mb
Low level cloud: 17%
Mid level cloud: 25%
High level cloud: 5%
Most Significant Cloud Type: low
26%
0.00 In
Sat 22
Aug
00:00

SW
SW

12 / 21 mph 62 / 62°F 85% 1006 mb
Low level cloud: 26%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
27%
0.00 In
06:00

SW
SW

12 / 18 mph 59 / 56°F 87% 1013 mb
Low level cloud: 13%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
16%
0.00 In
12:00

WSW
WSW

17 / 20 mph 65 / 65°F 65% 1007 mb
Low level cloud: 16%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
31%
0.02 In
18:00

WSW
WSW

13 / 20 mph 66 / 65°F 64% 1014 mb
Low level cloud: 6%
Mid level cloud: 30%
High level cloud: 5%
Most Significant Cloud Type: medium
46%
0.03 In
Sun 23
Aug
00:00

WSW
WSW

16 / 28 mph 57 / 53°F 80% 1009 mb
Low level cloud: 48%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
50%
0.00 In
06:00

SW
SW

10 / 14 mph 57 / 54°F 83% 1015 mb
Low level cloud: 7%
Mid level cloud: 14%
High level cloud: 6%
Most Significant Cloud Type: low
12%
0.00 In
12:00

W
W

16 / 18 mph 64 / 64°F 56% 1014 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 53%
Most Significant Cloud Type: medium
6%
0.00 In
18:00

SW
SW

16 / 25 mph 67 / 67°F 71% 1010 mb
Low level cloud: 76%
Mid level cloud: 27%
High level cloud: 99%
Most Significant Cloud Type: low
97%
0.00 In
Mon 24
Aug
00:00

W
W

10 / 15 mph 55 / 52°F 84% 1013 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
0.02 In
06:00

SSW
SSW

10 / 16 mph 62 / 62°F 92% 1009 mb
Low level cloud: 96%
Mid level cloud: 89%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.23 In
12:00

W
W

11 / 13 mph 63 / 63°F 53% 1012 mb
Low level cloud: 26%
Mid level cloud: 8%
High level cloud: 32%
Most Significant Cloud Type: low
32%
0.00 In
18:00

SSW
SSW

5 / 7 mph 67 / 67°F 91% 1008 mb
Low level cloud: 94%
Mid level cloud: 66%
High level cloud: 4%
Most Significant Cloud Type: low
100%
0.21 In
Tue 25
Aug
00:00

W
W

4 / 5 mph 61 / 61°F 81% 1012 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
21%
0.00 In
06:00

E
E

1 / 1 mph 62 / 62°F 93% 1006 mb
Low level cloud: 33%
Mid level cloud: 24%
High level cloud: 0%
Most Significant Cloud Type: low
41%
0.23 In
12:00

W
W

6 / 7 mph 65 / 65°F 50% 1012 mb
Low level cloud: 37%
Mid level cloud: 16%
High level cloud: 58%
Most Significant Cloud Type: low
49%
0.00 In
18:00

WSW
WSW

9 / 14 mph 65 / 65°F 69% 1005 mb
Low level cloud: 6%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: medium
61%
0.11 In
Wed 26
Aug
00:00

ENE
ENE

4 / 6 mph 58 / 58°F 73% 1013 mb
Low level cloud: 0%
Mid level cloud: 88%
High level cloud: 79%
Most Significant Cloud Type: medium
90%
0.00 In
06:00

WSW
WSW

7 / 11 mph 52 / 49°F 90% 1007 mb
Low level cloud: 12%
Mid level cloud: 52%
High level cloud: 9%
Most Significant Cloud Type: medium
85%
0.00 In
12:00

NNE
NNE

4 / 5 mph 66 / 66°F 50% 1015 mb
Low level cloud: 50%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
56%
0.00 In
18:00

WNW
WNW

13 / 26 mph 58 / 55°F 80% 1008 mb
Low level cloud: 4%
Mid level cloud: 37%
High level cloud: 100%
Most Significant Cloud Type: medium
51%
0.29 In
Thu 27
Aug
00:00

NW
NW

9 / 13 mph 52 / 49°F 80% 1019 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.00 In
06:00

WNW
WNW

6 / 7 mph 55 / 53°F 90% 1011 mb
Low level cloud: 1%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
0.00 In
12:00

WNW
WNW

8 / 9 mph 64 / 64°F 47% 1022 mb
Low level cloud: 0%
Mid level cloud: 21%
High level cloud: 12%
Most Significant Cloud Type: medium
21%
0.00 In
18:00

W
W

5 / 5 mph 70 / 70°F 66% 1012 mb
Low level cloud: 17%
Mid level cloud: 7%
High level cloud: 6%
Most Significant Cloud Type: low
19%
0.00 In
Fri 28
Aug
00:00

SW
SW

17 / 24 mph 60 / 60°F 83% 1018 mb
Low level cloud: 92%
Mid level cloud: 59%
High level cloud: 19%
Most Significant Cloud Type: low
100%
0.01 In
06:00

SW
SW

2 / 3 mph 61 / 61°F 83% 1014 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 3%
Most Significant Cloud Type: medium
6%
0.00 In
12:00

WSW
WSW

14 / 17 mph 70 / 70°F 67% 1018 mb
Low level cloud: 77%
Mid level cloud: 6%
High level cloud: 6%
Most Significant Cloud Type: low
79%
0.00 In
18:00

SW
SW

6 / 7 mph 69 / 69°F 66% 1014 mb
Low level cloud: 17%
Mid level cloud: 29%
High level cloud: 45%
Most Significant Cloud Type: low
32%
0.01 In
Sat 29
Aug
00:00

W
W

9 / 11 mph 61 / 61°F 89% 1018 mb
Low level cloud: 18%
Mid level cloud: 14%
High level cloud: 2%
Most Significant Cloud Type: low
23%
0.00 In
06:00

SSW
SSW

8 / 12 mph 59 / 59°F 85% 1014 mb
Low level cloud: 4%
Mid level cloud: 45%
High level cloud: 20%
Most Significant Cloud Type: medium
56%
0.00 In
12:00

SW
SW

9 / 10 mph 73 / 77°F 56% 1017 mb
Low level cloud: 3%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
5%
0.00 In
18:00

SSW
SSW

19 / 30 mph 65 / 65°F 80% 1012 mb
Low level cloud: 92%
Mid level cloud: 46%
High level cloud: 15%
Most Significant Cloud Type: low
100%
0.00 In

The day label given represents the local day relative to the local time for the location you are looking at.
(More Info)

Day

This time is corrected for local time zones and where possible for daylight saving times.
(More Info)

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.
(More Info)

Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
(More Info)

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.
(More Info)

Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
(More Info)

Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
(More Info)

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.
(More Info)

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.
(More Info)

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.
(More Info)

Pressure