Fast Forecast

WEATHER FOR BUSINESS

We supply weather data to businesses

Free Weather Plugin

Add this forecast to your website



Local Weather

Calistoga 14 Day Long Range Forecast

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

California, United States Of America

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

The forecast for Calistoga in the coming two weeks is predicting the average daytime maximum temperature will be around 34°C, with a high for the two weeks of 39°C expected on the afternoon of Tuesday 23rd. The mean minimum temperature will be 16°C, dipping to its lowest on the morning of Monday 22nd at 13°C. Expect the coming 14 days to have mostly dry days although Friday 19th and Tuesday 16th are likely to see a significant amount of rain. The indicators are that Friday 19th 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		HumidityPressureCloud AmountPrecip AmountWeather
Sun 14
Sep		01:00

WNW
WNW

 4 / 8 mph 52 / 51°F 80% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

WNW
WNW

 4 / 8 mph 52 / 52°F 86% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NW
NW

 3 / 5 mph 60 / 60°F 73% 1013 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
10:00

W
W

 4 / 4 mph 85 / 82°F 40% 1013 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

 7 / 8 mph 92 / 90°F 30% 1011 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
16:00

SW
SW

 7 / 9 mph 88 / 87°F 35% 1010 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
19:00

WSW
WSW

 3 / 6 mph 69 / 68°F 67% 1011 mb
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
22:00

NW
NW

 3 / 6 mph 64 / 64°F 75% 1012 mb
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
Mon 15
Sep		22:00

NNW
NNW

 2 / 5 mph 68 / 68°F 54% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Tue 16
Sep		01:00

NNW
NNW

 1 / 3 mph 65 / 65°F 57% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

N
N

 2 / 5 mph 63 / 63°F 55% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NE
NE

 2 / 4 mph 69 / 67°F 46% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSE
SSE

 4 / 4 mph 93 / 88°F 22% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 7 / 8 mph 99 / 95°F 16% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

 7 / 9 mph 95 / 90°F 17% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

 3 / 7 mph 75 / 75°F 31% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

NW
NW

 3 / 6 mph 69 / 69°F 33% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Wed 17
Sep		01:00

NW
NW

 3 / 7 mph 65 / 65°F 32% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

N
N

 3 / 7 mph 64 / 64°F 31% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NNE
NNE

 2 / 5 mph 71 / 69°F 28% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SSW
SSW

 2 / 2 mph 97 / 93°F 13% 1013 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

 8 / 10 mph 101 / 98°F 13% 1011 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

WSW
WSW

 7 / 8 mph 95 / 90°F 15% 1010 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 32%
Most Significant Cloud Type: medium
3%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

 4 / 8 mph 76 / 74°F 27% 1011 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 100%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

W
W

 3 / 6 mph 71 / 71°F 32% 1011 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 95%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Thu 18
Sep		01:00

W
W

 2 / 4 mph 69 / 69°F 34% 1009 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 99%
Most Significant Cloud Type: medium
6%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

SW
SW

 2 / 5 mph 68 / 68°F 36% 1008 mb
Low level cloud: 0%
Mid level cloud: 5%
High level cloud: 100%
Most Significant Cloud Type: medium
8%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

NW
NW

 5 / 10 mph 69 / 67°F 38% 1009 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 97%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

W
W

 6 / 7 mph 85 / 80°F 25% 1009 mb
Low level cloud: 0%
Mid level cloud: 44%
High level cloud: 64%
Most Significant Cloud Type: medium
46%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

W
W

 4 / 5 mph 89 / 84°F 22% 1008 mb
Low level cloud: 0%
Mid level cloud: 45%
High level cloud: 95%
Most Significant Cloud Type: medium
48%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

W
W

 5 / 6 mph 89 / 85°F 29% 1007 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
47%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

 2 / 5 mph 70 / 68°F 54% 1009 mb
Low level cloud: 0%
Mid level cloud: 18%
High level cloud: 22%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

SW
SW

 2 / 4 mph 63 / 63°F 69% 1010 mb
Low level cloud: 0%
Mid level cloud: 16%
High level cloud: 44%
Most Significant Cloud Type: medium
18%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Fri 19
Sep		01:00

SSW
SSW

 2 / 4 mph 61 / 61°F 77% 1010 mb
Low level cloud: 0%
Mid level cloud: 14%
High level cloud: 93%
Most Significant Cloud Type: medium
17%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

ENE
ENE

 1 / 2 mph 58 / 58°F 86% 1011 mb
Low level cloud: 37%
Mid level cloud: 43%
High level cloud: 32%
Most Significant Cloud Type: low
56%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

ENE
ENE

 1 / 2 mph 64 / 64°F 79% 1012 mb
Low level cloud: 69%
Mid level cloud: 95%
High level cloud: 34%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SE
SE

 2 / 3 mph 74 / 77°F 69% 1013 mb
Low level cloud: 91%
Mid level cloud: 93%
High level cloud: 31%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SSW
SSW

 3 / 4 mph 79 / 80°F 61% 1012 mb
Low level cloud: 91%
Mid level cloud: 82%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

 5 / 5 mph 83 / 82°F 58% 1011 mb
Low level cloud: 40%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

 4 / 6 mph 69 / 66°F 84% 1013 mb
Low level cloud: 5%
Mid level cloud: 46%
High level cloud: 0%
Most Significant Cloud Type: medium
59%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
22:00

WSW
WSW

 3 / 5 mph 61 / 61°F 96% 1014 mb
Low level cloud: 48%
Mid level cloud: 21%
High level cloud: 0%
Most Significant Cloud Type: low
55%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sat 20
Sep		01:00

WSW
WSW

 2 / 3 mph 64 / 64°F 94% 1014 mb
Low level cloud: 58%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
66%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
04:00

W
W

 2 / 3 mph 59 / 59°F 98% 1015 mb
Low level cloud: 67%
Mid level cloud: 32%
High level cloud: 0%
Most Significant Cloud Type: low
100%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
07:00

WSW
WSW

 2 / 2 mph 66 / 64°F 92% 1016 mb
Low level cloud: 52%
Mid level cloud: 23%
High level cloud: 0%
Most Significant Cloud Type: low
60%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
10:00

SW
SW

 3 / 4 mph 82 / 81°F 54% 1016 mb
Low level cloud: 15%
Mid level cloud: 16%
High level cloud: 0%
Most Significant Cloud Type: low
20%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
13:00

SW
SW

 9 / 11 mph 86 / 85°F 42% 1014 mb
Low level cloud: 0%
Mid level cloud: 22%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
16:00

SW
SW

 10 / 11 mph 81 / 81°F 50% 1015 mb
Low level cloud: 4%
Mid level cloud: 12%
High level cloud: 0%
Most Significant Cloud Type: medium
22%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
19:00

WSW
WSW

 4 / 8 mph 64 / 62°F 87% 1016 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
22:00

WSW
WSW

 3 / 6 mph 59 / 59°F 97% 1017 mb
Low level cloud: 49%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: low
51%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sun 21
Sep		04:00

NNW
NNW

 1 / 2 mph 64 / 64°F 54% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

SSE
SSE

 2 / 3 mph 89 / 85°F 20% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

SW
SW

 6 / 7 mph 84 / 82°F 30% 1010 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 0%
Most Significant Cloud Type: medium
7%
0.0 In
22:00

WSW
WSW

 1 / 2 mph 61 / 61°F 63% 1011 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 2%
Most Significant Cloud Type: medium
5%
0.0 In
Mon 22
Sep		04:00

WNW
WNW

 2 / 4 mph 55 / 56°F 93% 1011 mb
Low level cloud: 1%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
4%
0.0 In
10:00

S
S

 1 / 1 mph 86 / 83°F 28% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

SW
SW

 5 / 6 mph 86 / 85°F 37% 1009 mb
Low level cloud: 0%
Mid level cloud: 30%
High level cloud: 100%
Most Significant Cloud Type: medium
33%
0.0 In
22:00

NNW
NNW

 3 / 6 mph 67 / 67°F 58% 1009 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Tue 23
Sep		04:00

ENE
ENE

 2 / 3 mph 63 / 63°F 90% 1011 mb
Low level cloud: 61%
Mid level cloud: 38%
High level cloud: 93%
Most Significant Cloud Type: low
84%
0.0 In
10:00

N
N

 0 / 0 mph 96 / 93°F 22% 1009 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

WSW
WSW

 11 / 21 mph 74 / 77°F 63% 1010 mb
Low level cloud: 13%
Mid level cloud: 9%
High level cloud: 0%
Most Significant Cloud Type: low
16%
0.3 In
22:00

WNW
WNW

 2 / 4 mph 69 / 69°F 48% 1008 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Wed 24
Sep		04:00

WSW
WSW

 2 / 3 mph 64 / 64°F 87% 1016 mb
Low level cloud: 56%
Mid level cloud: 14%
High level cloud: 10%
Most Significant Cloud Type: low
61%
0.0 In
10:00

SSW
SSW

 4 / 6 mph 89 / 87°F 26% 1010 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

W
W

 10 / 20 mph 77 / 79°F 57% 1015 mb
Low level cloud: 56%
Mid level cloud: 28%
High level cloud: 0%
Most Significant Cloud Type: low
65%
0.0 In
22:00

W
W

 4 / 8 mph 61 / 61°F 65% 1012 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Thu 25
Sep		04:00

NNW
NNW

 4 / 10 mph 52 / 51°F 93% 1016 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

WSW
WSW

 6 / 9 mph 81 / 80°F 37% 1014 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
16:00

W
W

 9 / 18 mph 83 / 80°F 23% 1012 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

W
W

 5 / 10 mph 52 / 50°F 53% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
Fri 26
Sep		04:00

WNW
WNW

 4 / 9 mph 50 / 49°F 84% 1014 mb
Low level cloud: 0%
Mid level cloud: 6%
High level cloud: 0%
Most Significant Cloud Type: medium
5%
0.0 In
10:00

W
W

 6 / 9 mph 71 / 71°F 26% 1015 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
16:00

NW
NW

 12 / 24 mph 72 / 74°F 34% 1014 mb
Low level cloud: 0%
Mid level cloud: 7%
High level cloud: 1%
Most Significant Cloud Type: medium
6%
0.0 In
22:00

WNW
WNW

 5 / 10 mph 49 / 47°F 89% 1015 mb
Low level cloud: 0%
Mid level cloud: 2%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
Sat 27
Sep		04:00

N
N

 5 / 11 mph 47 / 44°F 72% 1018 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

W
W

 6 / 10 mph 67 / 67°F 42% 1016 mb
Low level cloud: 0%
Mid level cloud: 10%
High level cloud: 0%
Most Significant Cloud Type: medium
9%
0.0 In
16:00

NNE
NNE

 13 / 26 mph 81 / 78°F 14% 1014 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

NW
NW

 6 / 12 mph 46 / 43°F 91% 1015 mb
Low level cloud: 1%
Mid level cloud: 10%
High level cloud: 5%
Most Significant Cloud Type: medium
12%
0.0 In
Sun 28
Sep		04:00

N
N

 9 / 19 mph 60 / 60°F 29% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

N
N

 9 / 14 mph 72 / 73°F 27% 1016 mb
Low level cloud: 0%
Mid level cloud: 3%
High level cloud: 0%
Most Significant Cloud Type: medium
2%
0.0 In
16:00

ENE
ENE

 8 / 15 mph 86 / 82°F 13% 1011 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

NW
NW

 4 / 9 mph 52 / 51°F 61% 1014 mb
Low level cloud: 0%
Mid level cloud: 43%
High level cloud: 32%
Most Significant Cloud Type: medium
44%
0.0 In
Mon 29
Sep		04:00

NNE
NNE

 4 / 8 mph 61 / 61°F 28% 1013 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
10:00

WNW
WNW

 5 / 7 mph 74 / 76°F 45% 1014 mb
Low level cloud: 13%
Mid level cloud: 44%
High level cloud: 0%
Most Significant Cloud Type: medium
81%
0.0 In
16:00

SW
SW

 8 / 16 mph 89 / 85°F 15% 1010 mb
Low level cloud: 0%
Mid level cloud: 0%
High level cloud: 0%
Most Significant Cloud Type: high
0%
0.0 In
22:00

NNW
NNW

 3 / 7 mph 59 / 59°F 67% 1012 mb
Low level cloud: 0%
Mid level cloud: 1%
High level cloud: 0%
Most Significant Cloud Type: high
0%
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