Fast Forecast

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Flookburgh 14 Day Long Range Forecast

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

Cumbria, United Kingdom

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

For Flookburgh in the coming two weeks the average daytime maximum temperature will be around 15°C, with a high for the two weeks of 19°C expected on the afternoon of Saturday 18th. The mean minimum temperature will be 9°C, dipping to its lowest on the morning of Tuesday 21st at 7°C. Expect the coming 14 days to have some days seeing a little precipitation and some days with rain. Current predictions suggest Sunday 26th will have the most precipitation with an accumulation of around 15.0mm. On the whole winds are likely to be light.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityCloud AmountPrecip AmountWeather
Fri 17
May		06:00

NE
NE

 6 / 9 mph 56 / 54°F 89%
Low level cloud: 74%
Mid level cloud: 26%
High level cloud: 35%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ENE
ENE

 5 / 6 mph 59 / 58°F 83%
Low level cloud: 79%
Mid level cloud: 20%
High level cloud: 15%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNE
NNE

 4 / 5 mph 61 / 59°F 83%
Low level cloud: 63%
Mid level cloud: 44%
High level cloud: 16%
Most Significant Cloud Type: low
80%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

N
N

 5 / 7 mph 60 / 59°F 87%
Low level cloud: 81%
Mid level cloud: 55%
High level cloud: 1%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 5 / 7 mph 63 / 60°F 85%
Low level cloud: 34%
Mid level cloud: 30%
High level cloud: 0%
Most Significant Cloud Type: low
44%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NE
NE

 3 / 6 mph 56 / 56°F 89%
Low level cloud: 91%
Mid level cloud: 26%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 18
May		00:00

NE
NE

 6 / 11 mph 55 / 54°F 86%
Low level cloud: 35%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NE
NE

 7 / 13 mph 53 / 51°F 89%
Low level cloud: 39%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: low
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NE
NE

 5 / 9 mph 56 / 54°F 89%
Low level cloud: 83%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

 7 / 10 mph 62 / 60°F 82%
Low level cloud: 57%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

 6 / 9 mph 63 / 62°F 80%
Low level cloud: 77%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: low
91%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NNE
NNE

 6 / 10 mph 66 / 63°F 80%
Low level cloud: 66%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: low
71%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

NE
NE

 6 / 11 mph 65 / 63°F 79%
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 13%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

 4 / 8 mph 57 / 56°F 86%
Low level cloud: 0%
Mid level cloud: 8%
High level cloud: 10%
Most Significant Cloud Type: medium
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 19
May		00:00

ENE
ENE

 5 / 11 mph 52 / 51°F 89%
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 7%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

 5 / 11 mph 50 / 48°F 88%
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 9%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 3 / 6 mph 54 / 53°F 84%
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 33%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

 2 / 3 mph 63 / 60°F 73%
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 0%
Most Significant Cloud Type: medium
14%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WNW
WNW

 3 / 4 mph 65 / 63°F 69%
Low level cloud: 30%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WNW
WNW

 4 / 7 mph 62 / 61°F 83%
Low level cloud: 77%
Mid level cloud: 24%
High level cloud: 3%
Most Significant Cloud Type: low
85%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

E
E

 6 / 10 mph 63 / 60°F 86%
Low level cloud: 25%
Mid level cloud: 44%
High level cloud: 11%
Most Significant Cloud Type: low
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 6 / 13 mph 55 / 52°F 89%
Low level cloud: 7%
Mid level cloud: 46%
High level cloud: 18%
Most Significant Cloud Type: medium
65%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Mon 20
May		00:00

ENE
ENE

 6 / 12 mph 50 / 48°F 91%
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 29%
Most Significant Cloud Type: medium
45%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

 4 / 7 mph 51 / 49°F 84%
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 84%
Most Significant Cloud Type: medium
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 4 / 6 mph 54 / 51°F 85%
Low level cloud: 10%
Mid level cloud: 20%
High level cloud: 95%
Most Significant Cloud Type: medium
52%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NE
NE

 5 / 6 mph 57 / 54°F 78%
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 61%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NE
NE

 6 / 8 mph 63 / 60°F 60%
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 0%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

NE
NE

 7 / 10 mph 63 / 61°F 55%
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ENE
ENE

 8 / 12 mph 60 / 57°F 67%
Low level cloud: 0%
Mid level cloud: 58%
High level cloud: 32%
Most Significant Cloud Type: medium
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

ENE
ENE

 6 / 12 mph 51 / 48°F 72%
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 4%
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

ENE
ENE

 5 / 8 mph 50 / 49°F 67%
Low level cloud: 56%
Mid level cloud: 69%
High level cloud: 20%
Most Significant Cloud Type: low
82%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

ENE
ENE

 6 / 11 mph 48 / 45°F 72%
Low level cloud: 81%
Mid level cloud: 45%
High level cloud: 17%
Most Significant Cloud Type: low
98%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ENE
ENE

 3 / 5 mph 51 / 51°F 78%
Low level cloud: 90%
Mid level cloud: 87%
High level cloud: 22%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

SSE
SSE

 1 / 1 mph 54 / 53°F 82%
Low level cloud: 91%
Mid level cloud: 77%
High level cloud: 11%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 3 / 3 mph 59 / 58°F 79%
Low level cloud: 60%
Mid level cloud: 40%
High level cloud: 4%
Most Significant Cloud Type: low
74%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 4 / 6 mph 59 / 57°F 83%
Low level cloud: 42%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
53%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

 2 / 3 mph 59 / 58°F 84%
Low level cloud: 26%
Mid level cloud: 45%
High level cloud: 2%
Most Significant Cloud Type: low
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

W
W

 1 / 2 mph 55 / 55°F 86%
Low level cloud: 7%
Mid level cloud: 67%
High level cloud: 7%
Most Significant Cloud Type: medium
88%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May		00:00

WNW
WNW

 3 / 5 mph 54 / 54°F 86%
Low level cloud: 14%
Mid level cloud: 26%
High level cloud: 86%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

W
W

 3 / 5 mph 52 / 52°F 87%
Low level cloud: 4%
Mid level cloud: 27%
High level cloud: 74%
Most Significant Cloud Type: medium
40%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WSW
WSW

 4 / 7 mph 52 / 49°F 86%
Low level cloud: 7%
Mid level cloud: 42%
High level cloud: 55%
Most Significant Cloud Type: medium
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WSW
WSW

 6 / 9 mph 53 / 51°F 80%
Low level cloud: 19%
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
12:00

WSW
WSW

 9 / 12 mph 57 / 54°F 77%
Low level cloud: 12%
Mid level cloud: 86%
High level cloud: 100%
Most Significant Cloud Type: medium
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 13 / 15 mph 59 / 56°F 84%
Low level cloud: 17%
Mid level cloud: 16%
High level cloud: 100%
Most Significant Cloud Type: low
35%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

 10 / 11 mph 58 / 55°F 87%
Low level cloud: 48%
Mid level cloud: 24%
High level cloud: 99%
Most Significant Cloud Type: low
67%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

WSW
WSW

 7 / 9 mph 56 / 53°F 93%
Low level cloud: 20%
Mid level cloud: 27%
High level cloud: 35%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 23
May		00:00

W
W

 6 / 10 mph 51 / 49°F 93%
Low level cloud: 22%
Mid level cloud: 21%
High level cloud: 6%
Most Significant Cloud Type: low
29%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

WNW
WNW

 6 / 10 mph 49 / 47°F 95%
Low level cloud: 55%
Mid level cloud: 11%
High level cloud: 2%
Most Significant Cloud Type: low
58%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WNW
WNW

 5 / 6 mph 53 / 50°F 93%
Low level cloud: 59%
Mid level cloud: 9%
High level cloud: 5%
Most Significant Cloud Type: low
62%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

 6 / 7 mph 58 / 55°F 82%
Low level cloud: 21%
Mid level cloud: 8%
High level cloud: 13%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 9 / 10 mph 59 / 56°F 81%
Low level cloud: 19%
Mid level cloud: 6%
High level cloud: 33%
Most Significant Cloud Type: low
24%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

W
W

 9 / 10 mph 59 / 56°F 85%
Low level cloud: 16%
Mid level cloud: 6%
High level cloud: 32%
Most Significant Cloud Type: low
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

W
W

 5 / 6 mph 59 / 57°F 88%
Low level cloud: 11%
Mid level cloud: 5%
High level cloud: 25%
Most Significant Cloud Type: low
15%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SW
SW

 2 / 3 mph 54 / 52°F 95%
Low level cloud: 30%
Mid level cloud: 6%
High level cloud: 8%
Most Significant Cloud Type: low
33%
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 51 / 50°F 90%
Low level cloud: 28%
Mid level cloud: 16%
High level cloud: 9%
Most Significant Cloud Type: low
35%
0.0 In
06:00

WNW
WNW

 10 / 21 mph 46 / 41°F 85%
Low level cloud: 21%
Mid level cloud: 0%
High level cloud: 73%
Most Significant Cloud Type: low
30%
0.0 In
12:00

ENE
ENE

 17 / 33 mph 58 / 55°F 78%
Low level cloud: 94%
Mid level cloud: 27%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
18:00

ENE
ENE

 12 / 25 mph 61 / 61°F 81%
Low level cloud: 37%
Mid level cloud: 41%
High level cloud: 14%
Most Significant Cloud Type: low
53%
0.0 In
Sat 25
May		00:00

NE
NE

 9 / 19 mph 49 / 45°F 91%
Low level cloud: 2%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
1%
0.0 In
06:00

W
W

 1 / 2 mph 57 / 57°F 81%
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 10%
Most Significant Cloud Type: medium
10%
0.0 In
12:00

SW
SW

 8 / 17 mph 57 / 55°F 67%
Low level cloud: 56%
Mid level cloud: 46%
High level cloud: 2%
Most Significant Cloud Type: low
72%
0.0 In
18:00

SW
SW

 6 / 11 mph 60 / 60°F 84%
Low level cloud: 36%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
63%
0.0 In
Sun 26
May		00:00

S
S

 10 / 20 mph 53 / 49°F 90%
Low level cloud: 98%
Mid level cloud: 98%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.0 In
06:00

W
W

 8 / 14 mph 54 / 52°F 98%
Low level cloud: 77%
Mid level cloud: 41%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
12:00

S
S

 13 / 26 mph 55 / 51°F 96%
Low level cloud: 99%
Mid level cloud: 91%
High level cloud: 3%
Most Significant Cloud Type: low
100%
0.3 In
18:00

W
W

 13 / 23 mph 57 / 54°F 80%
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 14%
Most Significant Cloud Type: high
13%
0.0 In
Mon 27
May		00:00

WNW
WNW

 17 / 35 mph 49 / 43°F 89%
Low level cloud: 46%
Mid level cloud: 31%
High level cloud: 3%
Most Significant Cloud Type: low
57%
0.3 In
06:00

SW
SW

 4 / 8 mph 54 / 53°F 88%
Low level cloud: 39%
Mid level cloud: 21%
High level cloud: 10%
Most Significant Cloud Type: low
46%
0.0 In
12:00

WNW
WNW

 21 / 43 mph 52 / 47°F 67%
Low level cloud: 17%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
19%
0.0 In
18:00

WSW
WSW

 3 / 5 mph 62 / 62°F 84%
Low level cloud: 87%
Mid level cloud: 26%
High level cloud: 8%
Most Significant Cloud Type: low
97%
0.0 In
Tue 28
May		00:00

SW
SW

 6 / 13 mph 52 / 50°F 85%
Low level cloud: 17%
Mid level cloud: 47%
High level cloud: 92%
Most Significant Cloud Type: low
44%
0.0 In
06:00

NNW
NNW

 12 / 23 mph 48 / 43°F 91%
Low level cloud: 95%
Mid level cloud: 80%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.2 In
12:00

SE
SE

 10 / 21 mph 55 / 52°F 93%
Low level cloud: 99%
Mid level cloud: 67%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.1 In
18:00

W
W

 8 / 13 mph 53 / 50°F 86%
Low level cloud: 79%
Mid level cloud: 55%
High level cloud: 32%
Most Significant Cloud Type: low
100%
0.3 In
Wed 29
May		00:00

SW
SW

 7 / 15 mph 52 / 49°F 93%
Low level cloud: 6%
Mid level cloud: 27%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
0.0 In
06:00

W
W

 13 / 23 mph 46 / 40°F 86%
Low level cloud: 38%
Mid level cloud: 45%
High level cloud: 0%
Most Significant Cloud Type: low
54%
0.0 In
12:00

WSW
WSW

 4 / 9 mph 57 / 57°F 87%
Low level cloud: 47%
Mid level cloud: 27%
High level cloud: 16%
Most Significant Cloud Type: low
58%
0.0 In
18:00

W
W

 13 / 24 mph 53 / 49°F 77%
Low level cloud: 8%
Mid level cloud: 30%
High level cloud: 1%
Most Significant Cloud Type: medium
52%
0.1 In
Thu 30
May		00:00

SE
SE

 11 / 23 mph 56 / 54°F 91%
Low level cloud: 82%
Mid level cloud: 75%
High level cloud: 50%
Most Significant Cloud Type: low
100%
0.0 In
06:00

WNW
WNW

 11 / 22 mph 47 / 42°F 85%
Low level cloud: 49%
Mid level cloud: 10%
High level cloud: 2%
Most Significant Cloud Type: low
52%
0.0 In
12:00

S
S

 15 / 32 mph 60 / 60°F 84%
Low level cloud: 99%
Mid level cloud: 92%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
18:00

SW
SW

 5 / 10 mph 57 / 56°F 73%
Low level cloud: 0%
Mid level cloud: 15%
High level cloud: 100%
Most Significant Cloud Type: medium
19%
0.0 In
Fri 31
May		00:00

WSW
WSW

 13 / 26 mph 53 / 49°F 96%
Low level cloud: 83%
Mid level cloud: 43%
High level cloud: 0%
Most Significant Cloud Type: low
97%
0.4 In
06:00

SE
SE

 12 / 23 mph 47 / 42°F 93%
Low level cloud: 100%
Mid level cloud: 92%
High level cloud: 100%
Most Significant Cloud Type: low
100%
0.1 In
12:00

SW
SW

 10 / 21 mph 57 / 55°F 72%
Low level cloud: 15%
Mid level cloud: 28%
High level cloud: 4%
Most Significant Cloud Type: low
25%
0.0 In
18:00

SW
SW

 8 / 17 mph 58 / 56°F 91%
Low level cloud: 64%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
71%
0.5 In
Sat 01
Jun		00:00

SSE
SSE

 10 / 20 mph 49 / 45°F 93%
Low level cloud: 14%
Mid level cloud: 45%
High level cloud: 5%
Most Significant Cloud Type: medium
84%
0.2 In
06:00

SW
SW

 6 / 13 mph 52 / 50°F 87%
Low level cloud: 11%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
73%
0.0 In
12:00

SW
SW

 11 / 24 mph 58 / 55°F 68%
Low level cloud: 1%
Mid level cloud: 13%
High level cloud: 16%
Most Significant Cloud Type: medium
14%
0.0 In
18:00

SSW
SSW

 9 / 19 mph 57 / 55°F 81%
Low level cloud: 20%
Mid level cloud: 100%
High level cloud: 13%
Most Significant Cloud Type: medium
100%
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