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Alton
Average humidity
ClimateForecastNovemberDecember >>

Average humidity in Alton (IL)

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

Data from: St. Louis, the United States of America (29 KM, 18 Miles).
  • On average, December is the most humid month, at 74.0%.
  • On average, April is the least humid month, at 63.0%.
  • The average annual percentage of humidity is 68%.

Forecast for Alton (IL)

Sat   Nov 23
9°C | 1°C
S 11 km/h
partly cloudy and no rain

partly cloudy and no rain

hourly forecast
Sun   Nov 24
16°C | 4°C
SE 22 km/h
partly cloudy and no rain

partly cloudy and no rain

hourly forecast
Mon   Nov 25
14°C | 1°C
NW 25 km/h
1.4 mm
broken clouds and chance of slight rain

broken clouds and chance of slight rain

hourly forecast
5-Day Forecast 10-Day Forecast

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