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Helgoland 14 Day Long Range Forecast

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

Germany

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

Taking a look at Helgoland over the coming two weeks and the average daytime maximum temperature will be around 21°C, with a high for the two weeks of 29°C expected on the afternoon of Tuesday 1st. The mean minimum temperature will be 17°C, dipping to its lowest on the morning of Thursday 3rd at 15°C. Expect the following 14 days ahead to have most days seeing a little rain. The indicators are that Monday 7th will have the most precipitation with an accumulation of around 5.0mm. On the whole winds are likely to be moderate. The strongest wind will be experienced on the evening of Sunday 6th, coming from a south westerly direction, and reaching around 29mph. The forecast suggests the maximum gusts will be on Wednesday evening.

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

ESE
ESE

6 / 13 mph 79 / 79°F 61% 1015 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 16%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

ESE
ESE

13 / 28 mph 74 / 77°F 65% 1014 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 15%
Most Significant Cloud Type: medium
2%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 02
Jul
01:00

SE
SE

15 / 32 mph 75 / 79°F 77% 1013 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 84%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSE
SSE

16 / 31 mph 75 / 78°F 74% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 21%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

15 / 23 mph 73 / 76°F 79% 1013 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 9%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

10 / 20 mph 65 / 63°F 94% 1013 mb
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 2%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

N
N

8 / 15 mph 65 / 63°F 92% 1014 mb
Low level cloud: 6%
Mid level cloud: 26%
High level cloud: 6%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

NNE
NNE

8 / 15 mph 65 / 63°F 91% 1013 mb
Low level cloud: 1%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

NNW
NNW

23 / 40 mph 62 / 60°F 85% 1015 mb
Low level cloud: 6%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NE
NE

2 / 4 mph 61 / 59°F 88% 1016 mb
Low level cloud: 67%
Mid level cloud: 44%
High level cloud: 17%
Most Significant Cloud Type: low
84%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
Thu 03
Jul
01:00

NNW
NNW

19 / 23 mph 60 / 60°F 85% 1017 mb
Low level cloud: 85%
Mid level cloud: 7%
High level cloud: 64%
Most Significant Cloud Type: low
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

NW
NW

22 / 29 mph 59 / 59°F 75% 1019 mb
Low level cloud: 91%
Mid level cloud: 3%
High level cloud: 1%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NW
NW

20 / 27 mph 60 / 59°F 69% 1022 mb
Low level cloud: 99%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

NW
NW

17 / 19 mph 63 / 61°F 66% 1024 mb
Low level cloud: 46%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

NW
NW

13 / 15 mph 64 / 63°F 67% 1026 mb
Low level cloud: 49%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WNW
WNW

12 / 14 mph 65 / 63°F 68% 1027 mb
Low level cloud: 61%
Mid level cloud: 0%
High level cloud: 5%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WNW
WNW

12 / 14 mph 64 / 62°F 70% 1026 mb
Low level cloud: 56%
Mid level cloud: 4%
High level cloud: 6%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WNW
WNW

10 / 13 mph 62 / 61°F 70% 1026 mb
Low level cloud: 31%
Mid level cloud: 1%
High level cloud: 100%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 04
Jul
01:00

W
W

10 / 12 mph 63 / 62°F 72% 1026 mb
Low level cloud: 43%
Mid level cloud: 73%
High level cloud: 100%
Most Significant Cloud Type: low
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

W
W

16 / 21 mph 61 / 61°F 68% 1025 mb
Low level cloud: 5%
Mid level cloud: 98%
High level cloud: 91%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

W
W

13 / 18 mph 63 / 61°F 66% 1025 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: medium
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WSW
WSW

14 / 16 mph 66 / 65°F 66% 1025 mb
Low level cloud: 1%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

20 / 23 mph 69 / 68°F 73% 1024 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 32%
Most Significant Cloud Type: medium
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

20 / 23 mph 70 / 68°F 78% 1023 mb
Low level cloud: 8%
Mid level cloud: 34%
High level cloud: 32%
Most Significant Cloud Type: medium
57%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

18 / 21 mph 66 / 66°F 77% 1022 mb
Low level cloud: 6%
Mid level cloud: 88%
High level cloud: 8%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

14 / 17 mph 65 / 64°F 74% 1021 mb
Low level cloud: 0%
Mid level cloud: 63%
High level cloud: 14%
Most Significant Cloud Type: medium
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 05
Jul
01:00

SSW
SSW

19 / 21 mph 65 / 65°F 74% 1019 mb
Low level cloud: 0%
Mid level cloud: 79%
High level cloud: 10%
Most Significant Cloud Type: medium
79%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SSW
SSW

22 / 34 mph 63 / 63°F 71% 1016 mb
Low level cloud: 0%
Mid level cloud: 94%
High level cloud: 18%
Most Significant Cloud Type: medium
95%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

21 / 29 mph 64 / 63°F 77% 1015 mb
Low level cloud: 0%
Mid level cloud: 47%
High level cloud: 56%
Most Significant Cloud Type: medium
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

22 / 26 mph 70 / 69°F 80% 1014 mb
Low level cloud: 0%
Mid level cloud: 75%
High level cloud: 34%
Most Significant Cloud Type: medium
76%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

22 / 25 mph 74 / 78°F 83% 1014 mb
Low level cloud: 100%
Mid level cloud: 78%
High level cloud: 88%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

19 / 22 mph 75 / 79°F 87% 1012 mb
Low level cloud: 97%
Mid level cloud: 78%
High level cloud: 44%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

13 / 15 mph 72 / 76°F 86% 1010 mb
Low level cloud: 54%
Mid level cloud: 72%
High level cloud: 100%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

S
S

14 / 17 mph 69 / 67°F 84% 1008 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 06
Jul
01:00

SW
SW

19 / 32 mph 64 / 64°F 69% 1006 mb
Low level cloud: 0%
Mid level cloud: 38%
High level cloud: 100%
Most Significant Cloud Type: medium
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

21 / 35 mph 62 / 62°F 77% 1005 mb
Low level cloud: 76%
Mid level cloud: 55%
High level cloud: 100%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

SW
SW

24 / 33 mph 62 / 62°F 83% 1004 mb
Low level cloud: 80%
Mid level cloud: 44%
High level cloud: 34%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

24 / 28 mph 66 / 66°F 87% 1004 mb
Low level cloud: 58%
Mid level cloud: 44%
High level cloud: 97%
Most Significant Cloud Type: low
84%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

WSW
WSW

26 / 30 mph 70 / 69°F 79% 1004 mb
Low level cloud: 21%
Mid level cloud: 5%
High level cloud: 76%
Most Significant Cloud Type: low
31%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

26 / 30 mph 71 / 69°F 75% 1005 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 100%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

27 / 31 mph 68 / 67°F 77% 1004 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
22:00

WSW
WSW

29 / 35 mph 66 / 65°F 78% 1003 mb
Low level cloud: 38%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 07
Jul
01:00

WSW
WSW

29 / 38 mph 62 / 62°F 84% 1003 mb
Low level cloud: 53%
Mid level cloud: 44%
High level cloud: 20%
Most Significant Cloud Type: low
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

W
W

25 / 36 mph 61 / 61°F 80% 1003 mb
Low level cloud: 72%
Mid level cloud: 44%
High level cloud: 15%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WNW
WNW

24 / 31 mph 61 / 61°F 76% 1004 mb
Low level cloud: 56%
Mid level cloud: 100%
High level cloud: 71%
Most Significant Cloud Type: low
99%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

WNW
WNW

24 / 30 mph 64 / 63°F 71% 1006 mb
Low level cloud: 54%
Mid level cloud: 23%
High level cloud: 32%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

23 / 27 mph 66 / 65°F 68% 1008 mb
Low level cloud: 43%
Mid level cloud: 30%
High level cloud: 8%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

22 / 27 mph 67 / 65°F 76% 1008 mb
Low level cloud: 66%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

W
W

24 / 30 mph 65 / 64°F 69% 1008 mb
Low level cloud: 50%
Mid level cloud: 5%
High level cloud: 100%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

21 / 25 mph 64 / 62°F 70% 1008 mb
Low level cloud: 51%
Mid level cloud: 26%
High level cloud: 100%
Most Significant Cloud Type: low
71%
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

SW
SW

8 / 16 mph 61 / 61°F 78% 1009 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
0.0 In
07:00

WNW
WNW

19 / 40 mph 60 / 60°F 76% 1019 mb
Low level cloud: 6%
Mid level cloud: 65%
High level cloud: 100%
Most Significant Cloud Type: medium
86%
0.0 In
13:00

WNW
WNW

18 / 30 mph 60 / 60°F 72% 1011 mb
Low level cloud: 45%
Mid level cloud: 46%
High level cloud: 100%
Most Significant Cloud Type: low
72%
0.0 In
19:00

WNW
WNW

19 / 34 mph 61 / 61°F 70% 1009 mb
Low level cloud: 21%
Mid level cloud: 45%
High level cloud: 20%
Most Significant Cloud Type: low
39%
0.0 In
Wed 09
Jul
01:00

WNW
WNW

26 / 55 mph 59 / 55°F 68% 1011 mb
Low level cloud: 38%
Mid level cloud: 16%
High level cloud: 18%
Most Significant Cloud Type: low
45%
0.0 In
07:00

NW
NW

25 / 53 mph 59 / 55°F 63% 1014 mb
Low level cloud: 91%
Mid level cloud: 0%
High level cloud: 2%
Most Significant Cloud Type: low
91%
0.0 In
13:00

W
W

16 / 32 mph 64 / 64°F 85% 1020 mb
Low level cloud: 2%
Mid level cloud: 29%
High level cloud: 69%
Most Significant Cloud Type: medium
37%
0.0 In
19:00

NNW
NNW

23 / 49 mph 60 / 60°F 76% 1017 mb
Low level cloud: 82%
Mid level cloud: 6%
High level cloud: 100%
Most Significant Cloud Type: low
96%
0.0 In
Thu 10
Jul
01:00

WSW
WSW

20 / 41 mph 64 / 64°F 82% 1013 mb
Low level cloud: 91%
Mid level cloud: 99%
High level cloud: 87%
Most Significant Cloud Type: low
100%
0.0 In
07:00

NW
NW

13 / 27 mph 60 / 60°F 71% 1019 mb
Low level cloud: 17%
Mid level cloud: 45%
High level cloud: 62%
Most Significant Cloud Type: low
40%
0.0 In
13:00

W
W

19 / 40 mph 65 / 65°F 89% 1012 mb
Low level cloud: 22%
Mid level cloud: 47%
High level cloud: 43%
Most Significant Cloud Type: low
43%
0.1 In
19:00

WNW
WNW

9 / 18 mph 61 / 61°F 75% 1019 mb
Low level cloud: 7%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: medium
23%
0.0 In
Fri 11
Jul
01:00

WSW
WSW

17 / 37 mph 62 / 62°F 88% 1010 mb
Low level cloud: 14%
Mid level cloud: 94%
High level cloud: 16%
Most Significant Cloud Type: medium
100%
0.1 In
07:00

WNW
WNW

8 / 17 mph 61 / 62°F 90% 1019 mb
Low level cloud: 57%
Mid level cloud: 46%
High level cloud: 8%
Most Significant Cloud Type: low
73%
0.0 In
13:00

WSW
WSW

18 / 38 mph 64 / 64°F 92% 1013 mb
Low level cloud: 73%
Mid level cloud: 94%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
19:00

NNW
NNW

9 / 18 mph 63 / 63°F 81% 1019 mb
Low level cloud: 2%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
25%
0.0 In
Sat 12
Jul
01:00

WSW
WSW

12 / 26 mph 63 / 64°F 89% 1016 mb
Low level cloud: 53%
Mid level cloud: 45%
High level cloud: 1%
Most Significant Cloud Type: low
69%
0.0 In
07:00

NNW
NNW

3 / 5 mph 64 / 64°F 84% 1019 mb
Low level cloud: 21%
Mid level cloud: 27%
High level cloud: 33%
Most Significant Cloud Type: low
34%
0.0 In
13:00

WSW
WSW

9 / 18 mph 65 / 65°F 85% 1018 mb
Low level cloud: 82%
Mid level cloud: 93%
High level cloud: 8%
Most Significant Cloud Type: low
100%
0.0 In
19:00

NW
NW

4 / 9 mph 65 / 65°F 79% 1019 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 13%
Most Significant Cloud Type: medium
18%
0.0 In
Sun 13
Jul
01:00

WSW
WSW

13 / 26 mph 65 / 65°F 87% 1020 mb
Low level cloud: 40%
Mid level cloud: 93%
High level cloud: 0%
Most Significant Cloud Type: low
72%
0.0 In
07:00

WNW
WNW

6 / 13 mph 65 / 65°F 86% 1020 mb
Low level cloud: 7%
Mid level cloud: 32%
High level cloud: 5%
Most Significant Cloud Type: medium
51%
0.0 In
13:00

W
W

10 / 20 mph 66 / 66°F 88% 1021 mb
Low level cloud: 4%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: medium
27%
0.0 In
19:00

NW
NW

4 / 9 mph 67 / 67°F 79% 1020 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 21%
Most Significant Cloud Type: medium
10%
0.0 In
Mon 14
Jul
01:00

WNW
WNW

3 / 6 mph 67 / 67°F 89% 1020 mb
Low level cloud: 7%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
9%
0.0 In
07:00

W
W

8 / 17 mph 65 / 65°F 83% 1020 mb
Low level cloud: 13%
Mid level cloud: 81%
High level cloud: 0%
Most Significant Cloud Type: medium
100%
0.0 In
13:00

W
W

10 / 21 mph 72 / 76°F 85% 1017 mb
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 32%
Most Significant Cloud Type: medium
13%
0.0 In
19:00

WNW
WNW

8 / 17 mph 66 / 66°F 89% 1020 mb
Low level cloud: 24%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
29%
0.0 In
Tue 15
Jul
01:00

NW
NW

16 / 34 mph 61 / 61°F 84% 1019 mb
Low level cloud: 21%
Mid level cloud: 7%
High level cloud: 22%
Most Significant Cloud Type: low
26%
0.0 In
07:00

N
N

11 / 22 mph 63 / 63°F 90% 1020 mb
Low level cloud: 47%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
47%
0.0 In
13:00

NNW
NNW

14 / 29 mph 62 / 62°F 70% 1022 mb
Low level cloud: 12%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
11%
0.0 In
19:00

N
N

16 / 34 mph 66 / 66°F 83% 1019 mb
Low level cloud: 1%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
0.0 In
Wed 16
Jul
01:00

NNW
NNW

10 / 21 mph 62 / 62°F 71% 1024 mb
Low level cloud: 3%
Mid level cloud: 2%
High level cloud: 6%
Most Significant Cloud Type: low
4%
0.0 In
07:00

N
N

15 / 32 mph 64 / 64°F 87% 1019 mb
Low level cloud: 20%
Mid level cloud: 10%
High level cloud: 2%
Most Significant Cloud Type: low
23%
0.0 In
13:00

NNW
NNW

8 / 16 mph 63 / 63°F 68% 1025 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
19:00

N
N

19 / 40 mph 68 / 67°F 79% 1018 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 7%
Most Significant Cloud Type: medium
5%
0.0 In

Other Locations Near to Helgoland

Cities and Towns: Westerland, Germany

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