Fast Forecast

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Knoxville 14 Day Long Range Forecast

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

Iowa, United States Of America

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

Reviewing the forecast for Knoxville Over the next 14 days and the average daytime maximum temperature will be around 22°C, with a high for the two weeks of 27°C expected on the afternoon of Tuesday 21st. The mean minimum temperature will be 11°C, dipping to its lowest on the morning of Saturday 25th at 8°C. Expect the coming 14 days to have some days seeing a little precipitation and some days with rain. It looks like Friday 24th will have the most precipitation with an accumulation of around 11.0mm. On the whole winds are likely to be moderate. The strongest wind will be experienced on the afternoon of Tuesday 21st, coming from a south westerly direction, and reaching around 26mph.

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Mon 20
May		00:00

SE
SE

 5 / 11 mph 68 / 68°F 92% 1008 mb
Low level cloud: 8%
Mid level cloud: 52%
High level cloud: 36%
Most Significant Cloud Type: medium
77%
Expect 0.7 In of precipitation over the past 3 hours.
0.7 In
03:00

ESE
ESE

 6 / 11 mph 62 / 62°F 96% 1007 mb
Low level cloud: 72%
Mid level cloud: 52%
High level cloud: 17%
Most Significant Cloud Type: low
91%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
06:00

SSW
SSW

 7 / 12 mph 63 / 62°F 97% 1008 mb
Low level cloud: 72%
Mid level cloud: 31%
High level cloud: 43%
Most Significant Cloud Type: low
88%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

W
W

 7 / 9 mph 71 / 69°F 83% 1009 mb
Low level cloud: 69%
Mid level cloud: 18%
High level cloud: 100%
Most Significant Cloud Type: low
87%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

WSW
WSW

 7 / 8 mph 79 / 80°F 68% 1009 mb
Low level cloud: 16%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 13 / 17 mph 81 / 82°F 68% 1008 mb
Low level cloud: 44%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
54%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SW
SW

 6 / 9 mph 79 / 80°F 82% 1008 mb
Low level cloud: 6%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
9%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
21:00

S
S

 7 / 14 mph 70 / 70°F 92% 1009 mb
Low level cloud: 10%
Mid level cloud: 20%
High level cloud: 73%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 21
May		21:00

WNW
WNW

 18 / 28 mph 56 / 52°F 77% 1005 mb
Low level cloud: 25%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: low
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 22
May		00:00

WNW
WNW

 14 / 22 mph 52 / 47°F 82% 1009 mb
Low level cloud: 18%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: low
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SW
SW

 7 / 13 mph 49 / 46°F 89% 1011 mb
Low level cloud: 3%
Mid level cloud: 17%
High level cloud: 0%
Most Significant Cloud Type: medium
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

WSW
WSW

 7 / 12 mph 52 / 47°F 84% 1012 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 46%
Most Significant Cloud Type: medium
19%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

WNW
WNW

 8 / 9 mph 63 / 61°F 67% 1013 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

W
W

 6 / 7 mph 71 / 68°F 56% 1012 mb
Low level cloud: 1%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
1%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

WSW
WSW

 7 / 9 mph 73 / 76°F 52% 1012 mb
Low level cloud: 0%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

 4 / 6 mph 73 / 76°F 69% 1010 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

S
S

 7 / 15 mph 60 / 60°F 79% 1012 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 23
May		00:00

S
S

 8 / 17 mph 57 / 55°F 83% 1012 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSW
SSW

 8 / 17 mph 55 / 53°F 88% 1012 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

S
S

 7 / 15 mph 57 / 54°F 88% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 9%
Most Significant Cloud Type: high
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

S
S

 10 / 12 mph 68 / 67°F 66% 1010 mb
Low level cloud: 0%
Mid level cloud: 4%
High level cloud: 13%
Most Significant Cloud Type: medium
4%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

S
S

 11 / 13 mph 74 / 76°F 55% 1010 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 18%
Most Significant Cloud Type: high
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

S
S

 10 / 13 mph 76 / 77°F 56% 1008 mb
Low level cloud: 0%
Mid level cloud: 29%
High level cloud: 10%
Most Significant Cloud Type: medium
28%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

SE
SE

 9 / 15 mph 74 / 76°F 75% 1006 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 14%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SSE
SSE

 8 / 16 mph 64 / 64°F 93% 1007 mb
Low level cloud: 4%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
7%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 24
May		00:00

SE
SE

 9 / 17 mph 63 / 63°F 96% 1005 mb
Low level cloud: 54%
Mid level cloud: 15%
High level cloud: 21%
Most Significant Cloud Type: low
61%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

SSE
SSE

 10 / 20 mph 63 / 63°F 98% 1003 mb
Low level cloud: 97%
Mid level cloud: 45%
High level cloud: 90%
Most Significant Cloud Type: low
100%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
06:00

SSW
SSW

 9 / 14 mph 68 / 65°F 96% 1004 mb
Low level cloud: 44%
Mid level cloud: 31%
High level cloud: 0%
Most Significant Cloud Type: low
54%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
09:00

SW
SW

 19 / 26 mph 69 / 68°F 88% 1005 mb
Low level cloud: 22%
Mid level cloud: 44%
High level cloud: 100%
Most Significant Cloud Type: low
49%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

SW
SW

 9 / 12 mph 77 / 77°F 68% 1003 mb
Low level cloud: 0%
Mid level cloud: 24%
High level cloud: 33%
Most Significant Cloud Type: medium
25%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

SW
SW

 6 / 9 mph 75 / 78°F 74% 1002 mb
Low level cloud: 76%
Mid level cloud: 80%
High level cloud: 96%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

WNW
WNW

 10 / 16 mph 65 / 65°F 93% 1004 mb
Low level cloud: 99%
Mid level cloud: 91%
High level cloud: 98%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

NW
NW

 10 / 17 mph 61 / 62°F 90% 1006 mb
Low level cloud: 43%
Mid level cloud: 36%
High level cloud: 32%
Most Significant Cloud Type: low
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 25
May		00:00

NW
NW

 12 / 20 mph 54 / 50°F 90% 1008 mb
Low level cloud: 4%
Mid level cloud: 1%
High level cloud: 11%
Most Significant Cloud Type: low
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

NNW
NNW

 10 / 16 mph 48 / 44°F 92% 1009 mb
Low level cloud: 29%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: low
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

NW
NW

 7 / 11 mph 48 / 44°F 91% 1011 mb
Low level cloud: 10%
Mid level cloud: 5%
High level cloud: 6%
Most Significant Cloud Type: low
12%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

NNW
NNW

 9 / 10 mph 55 / 52°F 69% 1012 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 12%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

NNW
NNW

 8 / 9 mph 64 / 62°F 58% 1011 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 1%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

N
N

 5 / 6 mph 68 / 66°F 54% 1009 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 89%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
18:00

ESE
ESE

 4 / 6 mph 67 / 64°F 69% 1009 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 100%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

SE
SE

 6 / 12 mph 59 / 58°F 72% 1009 mb
Low level cloud: 0%
Mid level cloud: 33%
High level cloud: 100%
Most Significant Cloud Type: medium
36%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 26
May		00:00

ESE
ESE

 6 / 12 mph 56 / 55°F 81% 1009 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 37%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
03:00

E
E

 6 / 14 mph 52 / 50°F 89% 1008 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
06:00

ESE
ESE

 8 / 15 mph 54 / 50°F 88% 1008 mb
Low level cloud: 0%
Mid level cloud: 13%
High level cloud: 3%
Most Significant Cloud Type: medium
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
09:00

ESE
ESE

 11 / 14 mph 64 / 63°F 72% 1008 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 90%
Most Significant Cloud Type: medium
23%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
12:00

E
E

 9 / 12 mph 69 / 67°F 66% 1006 mb
Low level cloud: 1%
Mid level cloud: 24%
High level cloud: 67%
Most Significant Cloud Type: medium
30%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
15:00

E
E

 8 / 10 mph 73 / 76°F 64% 1005 mb
Low level cloud: 0%
Mid level cloud: 10%
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

ESE
ESE

 10 / 14 mph 69 / 67°F 83% 1004 mb
Low level cloud: 64%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
21:00

E
E

 4 / 6 mph 61 / 61°F 94% 1006 mb
Low level cloud: 12%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: low
13%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Mon 27
May		00:00

SSE
SSE

 13 / 27 mph 61 / 61°F 70% 1012 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 32%
Most Significant Cloud Type: medium
46%
0.0 In
06:00

NE
NE

 7 / 15 mph 52 / 49°F 87% 1017 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
11%
0.0 In
12:00

ENE
ENE

 6 / 12 mph 67 / 67°F 58% 1020 mb
Low level cloud: 38%
Mid level cloud: 19%
High level cloud: 11%
Most Significant Cloud Type: low
46%
0.0 In
18:00

NW
NW

 12 / 24 mph 75 / 78°F 84% 1009 mb
Low level cloud: 9%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
11%
0.0 In
Tue 28
May		00:00

ENE
ENE

 9 / 19 mph 63 / 63°F 97% 1016 mb
Low level cloud: 66%
Mid level cloud: 9%
High level cloud: 17%
Most Significant Cloud Type: low
70%
0.0 In
06:00

W
W

 13 / 28 mph 52 / 47°F 88% 1017 mb
Low level cloud: 7%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
64%
0.0 In
12:00

W
W

 17 / 36 mph 66 / 66°F 59% 1014 mb
Low level cloud: 27%
Mid level cloud: 61%
High level cloud: 0%
Most Significant Cloud Type: low
48%
0.0 In
18:00

WNW
WNW

 15 / 33 mph 58 / 55°F 86% 1012 mb
Low level cloud: 96%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
100%
0.0 In
Wed 29
May		00:00

NNW
NNW

 15 / 32 mph 51 / 46°F 81% 1019 mb
Low level cloud: 6%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: low
10%
0.0 In
06:00

NNW
NNW

 15 / 31 mph 53 / 49°F 93% 1012 mb
Low level cloud: 100%
Mid level cloud: 56%
High level cloud: 13%
Most Significant Cloud Type: low
100%
0.0 In
12:00

NNW
NNW

 16 / 33 mph 65 / 65°F 52% 1019 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
46%
0.0 In
18:00

N
N

 15 / 30 mph 59 / 59°F 82% 1014 mb
Low level cloud: 15%
Mid level cloud: 54%
High level cloud: 0%
Most Significant Cloud Type: medium
96%
0.1 In
Thu 30
May		00:00

NNW
NNW

 3 / 7 mph 57 / 58°F 68% 1019 mb
Low level cloud: 0%
Mid level cloud: 19%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
0.0 In
06:00

NW
NW

 10 / 22 mph 51 / 47°F 89% 1015 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
1%
0.0 In
12:00

NW
NW

 6 / 12 mph 69 / 69°F 46% 1018 mb
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

 6 / 13 mph 65 / 65°F 70% 1012 mb
Low level cloud: 0%
Mid level cloud: 20%
High level cloud: 0%
Most Significant Cloud Type: medium
19%
0.0 In
Fri 31
May		00:00

S
S

 7 / 15 mph 56 / 55°F 75% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 22%
Most Significant Cloud Type: high
21%
0.0 In
06:00

NNW
NNW

 6 / 13 mph 52 / 50°F 87% 1015 mb
Low level cloud: 0%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: medium
8%
0.0 In
12:00

S
S

 10 / 21 mph 67 / 67°F 72% 1016 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 94%
Most Significant Cloud Type: medium
50%
0.0 In
18:00

W
W

 4 / 7 mph 67 / 67°F 71% 1014 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
46%
0.0 In
Sat 01
Jun		00:00

SSW
SSW

 3 / 7 mph 62 / 62°F 94% 1017 mb
Low level cloud: 57%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
60%
0.0 In
06:00

W
W

 5 / 10 mph 56 / 56°F 86% 1018 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
6%
0.0 In
12:00

ESE
ESE

 5 / 11 mph 74 / 77°F 69% 1017 mb
Low level cloud: 59%
Mid level cloud: 30%
High level cloud: 16%
Most Significant Cloud Type: low
71%
0.0 In
18:00

SSE
SSE

 2 / 5 mph 74 / 78°F 66% 1015 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
46%
0.0 In
Sun 02
Jun		00:00

S
S

 4 / 8 mph 65 / 65°F 93% 1016 mb
Low level cloud: 40%
Mid level cloud: 44%
High level cloud: 20%
Most Significant Cloud Type: low
58%
0.2 In
06:00

SE
SE

 4 / 9 mph 59 / 59°F 84% 1017 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 9%
Most Significant Cloud Type: high
8%
0.0 In
12:00

NNW
NNW

 7 / 15 mph 71 / 71°F 75% 1013 mb
Low level cloud: 25%
Mid level cloud: 4%
High level cloud: 0%
Most Significant Cloud Type: low
26%
0.3 In
18:00

E
E

 8 / 17 mph 70 / 70°F 75% 1015 mb
Low level cloud: 2%
Mid level cloud: 18%
High level cloud: 32%
Most Significant Cloud Type: medium
23%
0.0 In
Mon 03
Jun		00:00

NW
NW

 7 / 15 mph 57 / 56°F 89% 1014 mb
Low level cloud: 0%
Mid level cloud: 11%
High level cloud: 0%
Most Significant Cloud Type: medium
10%
0.0 In
06:00

E
E

 6 / 13 mph 61 / 61°F 86% 1017 mb
Low level cloud: 1%
Mid level cloud: 32%
High level cloud: 14%
Most Significant Cloud Type: medium
36%
0.0 In
12:00

NW
NW

 7 / 16 mph 72 / 76°F 59% 1016 mb
Low level cloud: 49%
Mid level cloud: 5%
High level cloud: 0%
Most Significant Cloud Type: low
50%
0.0 In
18:00

NE
NE

 4 / 9 mph 71 / 71°F 77% 1017 mb
Low level cloud: 6%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: medium
43%
0.0 In
Tue 04
Jun		00:00

WSW
WSW

 4 / 9 mph 67 / 67°F 71% 1015 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
0.0 In
06:00

NW
NW

 3 / 7 mph 63 / 63°F 91% 1020 mb
Low level cloud: 3%
Mid level cloud: 15%
High level cloud: 0%
Most Significant Cloud Type: medium
24%
0.0 In
12:00

WNW
WNW

 4 / 9 mph 76 / 78°F 56% 1014 mb
Low level cloud: 10%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: low
13%
0.0 In
18:00

SSE
SSE

 2 / 3 mph 77 / 80°F 68% 1017 mb
Low level cloud: 0%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
46%
0.0 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