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 Nov 23
6°C | 2°C
SW 
11 km/h
11 km/h
broken clouds and no rain
Sun Nov 24
15°C | 2°C
S 25 km/h
25 km/h
broken clouds and no rain
Mon Nov 25
13°C | 0°C
NW 25 km/h
25 km/h
broken clouds and no rain
