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Map of Average Humidity by US State

As of 1991-2020, average humidity ranges from 30.5% in Nevada to 73.8% in Alaska across US states, with a median of 67.1% among the 51 states with data. Source: NOAA U.S. Climate Normals.

Average relative humidity across the year. Higher means more humid, muggier air.

Data updated 2020 - Source: NOAA U.S. Climate Normals

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Choropleth map of Average Humidity across US states (1991-2020), by hearthmap
Average Humidity by US state. Source: NOAA U.S. Climate Normals.

Category

environment

Native level

County

Unit

Percentage

Vintage

1991-2020

States ranked by average humidity

51 states with data (1991-2020). Top 10 highest and bottom 10 lowest.

Top 10 states by average humidity
RankStateValue
1Alaska73.8%
2Florida72.8%
3Louisiana72.4%
4Oregon71.7%
5Mississippi71.0%
6Washington70.4%
7Iowa70.2%
8Michigan69.9%
9Alabama69.7%
10Wisconsin69.6%
Bottom 10 states by average humidity
RankStateValue
51Nevada30.5%
50Arizona31.3%
49New Mexico38.8%
48Colorado47.4%
47Utah49.3%
46Wyoming53.1%
45Idaho55.5%
44California57.5%
43Montana59.4%
42District of Columbia62.7%

About this map

hearthmap renders average humidity as a choropleth map of the United States. Zoom in to see county values shaded against the rest of the country, and click any region to see its exact value with margin of error.

You can layer filters and a custom match score on top of average humidityto find places that match what matters to you. Combine it with school ratings, housing prices, commute times, and more.

Source: NOAA U.S. Climate Normals · 1991-2020

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