WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Wepre 14 Day Long Range Forecast

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

Flintshire, United Kingdom

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

Reviewing the forecast for Wepre Over the next 14 days and the average daytime maximum temperature will be around 18°C, with a high for the two weeks of 21°C expected on the afternoon of Friday 17th. The mean minimum temperature will be 10°C, dipping to its lowest on the morning of Friday 24th at 7°C. The next 14 days will have some days seeing a little precipitation and some days with rain. Predictions are Wednesday 22nd will have the most precipitation with an accumulation of around 2.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityCloud AmountPrecip AmountWeather
Fri 17
May
03:00

SE
SE

3 / 4 mph 54 / 54°F 98%
Low level cloud: 71%
Mid level cloud: 24%
High level cloud: 5%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

SE
SE

4 / 6 mph 55 / 52°F 96%
Low level cloud: 39%
Mid level cloud: 29%
High level cloud: 7%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SE
SE

4 / 4 mph 64 / 62°F 74%
Low level cloud: 36%
Mid level cloud: 18%
High level cloud: 2%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

1 / 2 mph 69 / 66°F 62%
Low level cloud: 26%
Mid level cloud: 21%
High level cloud: 18%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNW
NNW

8 / 10 mph 64 / 62°F 79%
Low level cloud: 13%
Mid level cloud: 28%
High level cloud: 4%
Most Significant Cloud Type: low
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NW
NW

6 / 8 mph 64 / 61°F 78%
Low level cloud: 1%
Mid level cloud: 15%
High level cloud: 6%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

4 / 8 mph 56 / 53°F 95%
Low level cloud: 7%
Mid level cloud: 17%
High level cloud: 18%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 18
May
00:00

WNW
WNW

3 / 6 mph 52 / 51°F 96%
Low level cloud: 68%
Mid level cloud: 46%
High level cloud: 12%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WNW
WNW

3 / 6 mph 53 / 52°F 96%
Low level cloud: 73%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NNE
NNE

3 / 4 mph 55 / 55°F 94%
Low level cloud: 86%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: low
89%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNE
NNE

6 / 7 mph 60 / 60°F 76%
Low level cloud: 95%
Mid level cloud: 14%
High level cloud: 6%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

N
N

6 / 7 mph 62 / 61°F 74%
Low level cloud: 89%
Mid level cloud: 31%
High level cloud: 2%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNW
NNW

9 / 10 mph 62 / 62°F 77%
Low level cloud: 94%
Mid level cloud: 42%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NW
NW

7 / 9 mph 62 / 60°F 88%
Low level cloud: 25%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NW
NW

4 / 9 mph 55 / 52°F 97%
Low level cloud: 19%
Mid level cloud: 7%
High level cloud: 3%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
May
00:00

WNW
WNW

3 / 6 mph 52 / 52°F 96%
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 11%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

2 / 4 mph 50 / 50°F 92%
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 3%
Most Significant Cloud Type: medium
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NW
NW

1 / 2 mph 54 / 52°F 88%
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 11%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

4 / 4 mph 64 / 62°F 60%
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 18%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

5 / 6 mph 68 / 66°F 52%
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

N
N

6 / 6 mph 68 / 66°F 55%
Low level cloud: 8%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNW
NNW

6 / 8 mph 63 / 60°F 76%
Low level cloud: 31%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NNW
NNW

2 / 4 mph 56 / 55°F 93%
Low level cloud: 31%
Mid level cloud: 22%
High level cloud: 1%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May
00:00

ESE
ESE

3 / 5 mph 52 / 51°F 96%
Low level cloud: 38%
Mid level cloud: 32%
High level cloud: 10%
Most Significant Cloud Type: low
50%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SE
SE

2 / 4 mph 49 / 49°F 96%
Low level cloud: 39%
Mid level cloud: 53%
High level cloud: 17%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

2 / 3 mph 51 / 51°F 90%
Low level cloud: 21%
Mid level cloud: 87%
High level cloud: 20%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

4 / 5 mph 59 / 56°F 70%
Low level cloud: 26%
Mid level cloud: 41%
High level cloud: 20%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

ENE
ENE

7 / 8 mph 64 / 62°F 52%
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

7 / 8 mph 65 / 64°F 50%
Low level cloud: 0%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNE
NNE

6 / 7 mph 66 / 63°F 60%
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 8%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

3 / 5 mph 53 / 51°F 74%
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 13%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May
00:00

S
S

0 / 1 mph 47 / 47°F 77%
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 5%
Most Significant Cloud Type: medium
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WSW
WSW

0 / 1 mph 49 / 49°F 67%
Low level cloud: 1%
Mid level cloud: 25%
High level cloud: 20%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

0 / 1 mph 51 / 50°F 71%
Low level cloud: 64%
Mid level cloud: 28%
High level cloud: 32%
Most Significant Cloud Type: low
77%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

1 / 2 mph 57 / 55°F 65%
Low level cloud: 48%
Mid level cloud: 24%
High level cloud: 4%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SSE
SSE

2 / 3 mph 63 / 60°F 59%
Low level cloud: 32%
Mid level cloud: 18%
High level cloud: 2%
Most Significant Cloud Type: low
38%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

2 / 2 mph 66 / 63°F 61%
Low level cloud: 55%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NNW
NNW

4 / 5 mph 63 / 60°F 74%
Low level cloud: 45%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

3 / 7 mph 54 / 51°F 89%
Low level cloud: 51%
Mid level cloud: 28%
High level cloud: 2%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May
00:00

WNW
WNW

3 / 6 mph 50 / 50°F 92%
Low level cloud: 44%
Mid level cloud: 28%
High level cloud: 5%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

3 / 6 mph 49 / 48°F 93%
Low level cloud: 27%
Mid level cloud: 25%
High level cloud: 35%
Most Significant Cloud Type: low
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

W
W

3 / 4 mph 53 / 51°F 89%
Low level cloud: 26%
Mid level cloud: 23%
High level cloud: 30%
Most Significant Cloud Type: low
37%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

7 / 8 mph 61 / 59°F 69%
Low level cloud: 26%
Mid level cloud: 18%
High level cloud: 34%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NW
NW

10 / 13 mph 61 / 59°F 75%
Low level cloud: 30%
Mid level cloud: 45%
High level cloud: 33%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NW
NW

9 / 11 mph 63 / 61°F 67%
Low level cloud: 12%
Mid level cloud: 14%
High level cloud: 14%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NW
NW

9 / 11 mph 61 / 59°F 76%
Low level cloud: 7%
Mid level cloud: 13%
High level cloud: 10%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

4 / 7 mph 53 / 51°F 93%
Low level cloud: 9%
Mid level cloud: 8%
High level cloud: 9%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 23
May
00:00

WSW
WSW

3 / 6 mph 49 / 48°F 93%
Low level cloud: 12%
Mid level cloud: 6%
High level cloud: 2%
Most Significant Cloud Type: low
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

4 / 8 mph 47 / 45°F 96%
Low level cloud: 60%
Mid level cloud: 9%
High level cloud: 11%
Most Significant Cloud Type: low
64%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NW
NW

6 / 9 mph 53 / 49°F 94%
Low level cloud: 65%
Mid level cloud: 10%
High level cloud: 13%
Most Significant Cloud Type: low
70%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NW
NW

10 / 12 mph 56 / 53°F 76%
Low level cloud: 73%
Mid level cloud: 14%
High level cloud: 8%
Most Significant Cloud Type: low
78%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NW
NW

11 / 13 mph 59 / 56°F 70%
Low level cloud: 39%
Mid level cloud: 20%
High level cloud: 20%
Most Significant Cloud Type: low
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NW
NW

11 / 13 mph 59 / 56°F 70%
Low level cloud: 44%
Mid level cloud: 7%
High level cloud: 9%
Most Significant Cloud Type: low
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NW
NW

9 / 10 mph 58 / 55°F 76%
Low level cloud: 16%
Mid level cloud: 5%
High level cloud: 6%
Most Significant Cloud Type: low
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WNW
WNW

4 / 7 mph 52 / 49°F 95%
Low level cloud: 8%
Mid level cloud: 5%
High level cloud: 2%
Most Significant Cloud Type: low
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust
Temp/
Feels Like
HumidityCloud AmountPrecip AmountWeather
Fri 24
May
00:00

W
W

4 / 9 mph 53 / 52°F 96%
Low level cloud: 21%
Mid level cloud: 5%
High level cloud: 5%
Most Significant Cloud Type: low
23%
0.0 In
06:00

WNW
WNW

4 / 8 mph 51 / 50°F 87%
Low level cloud: 29%
Mid level cloud: 0%
High level cloud: 100%
Most Significant Cloud Type: low
41%
0.0 In
12:00

E
E

10 / 20 mph 58 / 56°F 84%
Low level cloud: 100%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
18:00

ENE
ENE

6 / 12 mph 65 / 65°F 93%
Low level cloud: 90%
Mid level cloud: 65%
High level cloud: 29%
Most Significant Cloud Type: low
100%
0.0 In
Sat 25
May
00:00

ENE
ENE

4 / 7 mph 60 / 60°F 95%
Low level cloud: 21%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
20%
0.0 In
06:00

SW
SW

2 / 4 mph 58 / 60°F 81%
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 9%
Most Significant Cloud Type: medium
6%
0.0 In
12:00

E
E

12 / 24 mph 66 / 66°F 64%
Low level cloud: 41%
Mid level cloud: 60%
High level cloud: 0%
Most Significant Cloud Type: low
61%
0.0 In
18:00

SW
SW

8 / 14 mph 63 / 63°F 76%
Low level cloud: 10%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
76%
0.0 In
Sun 26
May
00:00

E
E

6 / 12 mph 56 / 55°F 92%
Low level cloud: 8%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
9%
0.0 In
06:00

W
W

4 / 8 mph 58 / 58°F 96%
Low level cloud: 97%
Mid level cloud: 60%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

E
E

14 / 29 mph 65 / 65°F 57%
Low level cloud: 30%
Mid level cloud: 46%
High level cloud: 3%
Most Significant Cloud Type: low
46%
0.0 In
18:00

NW
NW

10 / 17 mph 62 / 62°F 71%
Low level cloud: 1%
Mid level cloud: 6%
High level cloud: 4%
Most Significant Cloud Type: medium
10%
0.0 In
Mon 27
May
00:00

E
E

4 / 10 mph 55 / 55°F 95%
Low level cloud: 80%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
87%
0.1 In
06:00

SSW
SSW

2 / 4 mph 60 / 60°F 78%
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 5%
Most Significant Cloud Type: medium
15%
0.0 In
12:00

ENE
ENE

6 / 13 mph 66 / 65°F 60%
Low level cloud: 71%
Mid level cloud: 46%
High level cloud: 31%
Most Significant Cloud Type: low
90%
0.0 In
18:00

W
W

4 / 7 mph 75 / 78°F 70%
Low level cloud: 22%
Mid level cloud: 5%
High level cloud: 8%
Most Significant Cloud Type: low
24%
0.0 In
Tue 28
May
00:00

ESE
ESE

1 / 2 mph 60 / 60°F 86%
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 32%
Most Significant Cloud Type: medium
5%
0.0 In
06:00

NW
NW

9 / 17 mph 49 / 45°F 97%
Low level cloud: 100%
Mid level cloud: 90%
High level cloud: 62%
Most Significant Cloud Type: low
100%
0.1 In
12:00

ESE
ESE

5 / 10 mph 69 / 69°F 56%
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 3%
Most Significant Cloud Type: high
2%
0.0 In
18:00

NW
NW

9 / 16 mph 53 / 51°F 80%
Low level cloud: 2%
Mid level cloud: 15%
High level cloud: 18%
Most Significant Cloud Type: medium
22%
0.4 In
Wed 29
May
00:00

SSE
SSE

5 / 10 mph 60 / 60°F 92%
Low level cloud: 2%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
3%
0.0 In
06:00

W
W

8 / 15 mph 49 / 45°F 83%
Low level cloud: 27%
Mid level cloud: 18%
High level cloud: 0%
Most Significant Cloud Type: low
33%
0.0 In
12:00

ESE
ESE

6 / 12 mph 70 / 71°F 58%
Low level cloud: 4%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
3%
0.0 In
18:00

WNW
WNW

12 / 23 mph 55 / 51°F 69%
Low level cloud: 24%
Mid level cloud: 40%
High level cloud: 0%
Most Significant Cloud Type: low
37%
0.0 In
Thu 30
May
00:00

SE
SE

4 / 9 mph 60 / 60°F 94%
Low level cloud: 5%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
4%
0.0 In
06:00

W
W

6 / 12 mph 49 / 46°F 89%
Low level cloud: 49%
Mid level cloud: 8%
High level cloud: 2%
Most Significant Cloud Type: low
52%
0.0 In
12:00

E
E

6 / 12 mph 71 / 71°F 58%
Low level cloud: 3%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
3%
0.0 In
18:00

NNW
NNW

1 / 3 mph 60 / 60°F 66%
Low level cloud: 32%
Mid level cloud: 14%
High level cloud: 100%
Most Significant Cloud Type: low
49%
0.0 In
Fri 31
May
00:00

ESE
ESE

3 / 6 mph 59 / 60°F 95%
Low level cloud: 23%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
25%
0.0 In
06:00

SSE
SSE

11 / 21 mph 50 / 46°F 95%
Low level cloud: 62%
Mid level cloud: 77%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
12:00

NE
NE

5 / 11 mph 70 / 71°F 45%
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
0.0 In
18:00

WSW
WSW

9 / 18 mph 63 / 63°F 80%
Low level cloud: 21%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
28%
0.1 In
Sat 01
Jun
00:00

W
W

2 / 4 mph 61 / 61°F 91%
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 14%
Most Significant Cloud Type: medium
2%
0.0 In
06:00

SW
SW

7 / 15 mph 54 / 52°F 88%
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.0 In
12:00

NNW
NNW

9 / 18 mph 69 / 69°F 46%
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 7%
Most Significant Cloud Type: high
7%
0.0 In
18:00

SW
SW

9 / 18 mph 58 / 56°F 65%
Low level cloud: 0%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: medium
27%
0.1 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