Annual Weather Averages Near Wheaton
Averages are for Dupage Airport, which is 13 kilometers from Wheaton.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Wheaton
High Temp: 29 °C
Low Temp: -9 °C
Mean Temp: 10 °C
Precipitation: 70.0 mm
Humidity: 72%
Dew Point: 5 °C
Wind: 25 km/h
Pressure: 101.71 kPa
Visibility: 14 km
January Climate & Weather Averages in Wheaton
High Temp: -1 °C
Low Temp: -9 °C
Mean Temp: -5 °C
Precipitation: 36.8 mm
Humidity: 79%
Dew Point: -8 °C
Wind: 29 km/h
Pressure: 101.94 kPa
Visibility: 12 km
February Climate & Weather Averages in Wheaton
High Temp: 2 °C
Low Temp: -8 °C
Mean Temp: -3 °C
Precipitation: 34.0 mm
Humidity: 75%
Dew Point: -7 °C
Wind: 29 km/h
Pressure: 101.93 kPa
Visibility: 13 km
March Climate & Weather Averages in Wheaton
High Temp: 8 °C
Low Temp: -3 °C
Mean Temp: 3 °C
Precipitation: 47.8 mm
Humidity: 70%
Dew Point: -2 °C
Wind: 29 km/h
Pressure: 101.89 kPa
Visibility: 14 km
April Climate & Weather Averages in Wheaton
High Temp: 15 °C
Low Temp: 3 °C
Mean Temp: 9 °C
Precipitation: 86.1 mm
Humidity: 65%
Dew Point: 2 °C
Wind: 30 km/h
Pressure: 101.52 kPa
Visibility: 15 km
May Climate & Weather Averages in Wheaton
High Temp: 22 °C
Low Temp: 9 °C
Mean Temp: 15 °C
Precipitation: 106.6 mm
Humidity: 68%
Dew Point: 9 °C
Wind: 26 km/h
Pressure: 101.52 kPa
Visibility: 15 km
June Climate & Weather Averages in Wheaton
High Temp: 27 °C
Low Temp: 15 °C
Mean Temp: 21 °C
Precipitation: 99.7 mm
Humidity: 68%
Dew Point: 14 °C
Wind: 22 km/h
Pressure: 101.39 kPa
Visibility: 15 km
July Climate & Weather Averages in Wheaton
High Temp: 29 °C
Low Temp: 17 °C
Mean Temp: 23 °C
Precipitation: 87.7 mm
Humidity: 70%
Dew Point: 17 °C
Wind: 19 km/h
Pressure: 101.50 kPa
Visibility: 15 km
August Climate & Weather Averages in Wheaton
High Temp: 28 °C
Low Temp: 16 °C
Mean Temp: 22 °C
Precipitation: 86.5 mm
Humidity: 73%
Dew Point: 17 °C
Wind: 17 km/h
Pressure: 101.60 kPa
Visibility: 14 km
September Climate & Weather Averages in Wheaton
High Temp: 24 °C
Low Temp: 12 °C
Mean Temp: 18 °C
Precipitation: 78.7 mm
Humidity: 71%
Dew Point: 12 °C
Wind: 20 km/h
Pressure: 101.71 kPa
Visibility: 15 km
October Climate & Weather Averages in Wheaton
High Temp: 17 °C
Low Temp: 5 °C
Mean Temp: 11 °C
Precipitation: 77.8 mm
Humidity: 71%
Dew Point: 6 °C
Wind: 24 km/h
Pressure: 101.74 kPa
Visibility: 15 km
November Climate & Weather Averages in Wheaton
High Temp: 9 °C
Low Temp: -1 °C
Mean Temp: 4 °C
Precipitation: 55.2 mm
Humidity: 74%
Dew Point: 0 °C
Wind: 27 km/h
Pressure: 101.89 kPa
Visibility: 14 km
December Climate & Weather Averages in Wheaton
High Temp: 2 °C
Low Temp: -6 °C
Mean Temp: -2 °C
Precipitation: 43.5 mm
Humidity: 79%
Dew Point: -5 °C
Wind: 27 km/h
Pressure: 101.88 kPa
Visibility: 13 km