Average humidity in Decatur (IL)

The mean monthly relative humidity over the year in Decatur (Illinois), the United States of America.

* Data from: Springfield, the United States of America (59 KM, 36 Miles).

On average, December is the most humid month, at 78.0%.
On average, May is the least humid month, at 65.0%.
The average annual percentage of humidity is 71%.

Forecast for Decatur (IL)

Sat May 18

30°C | 16°C

14 km/h

clear and no rain

hourly forecast

Sun May 19

30°C | 18°C

11 km/h

partly cloudy and no rain

hourly forecast

Mon May 20

30°C | 19°C

25 km/h

broken clouds and no rain

hourly forecast

5-Day Forecast 10-Day Forecast

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