Springfield Average Temperature by Month

This page shows the average temperature in each month of the year in Springfield, Illinois. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Springfield?
In Springfield, Illinois, the warmest month is July, with an average daily high temperature of 86.4 °F and an average low of 65.8 °F.
What's the Coldest Month in Springfield?
In Springfield, Illinois, the coolest month is January, with an average daily high temperature of 35.4 °F and an average low of 19.4 °F.
Month Avg. High Avg. Low
January 35.4 °F 19.4 °F
February 40.7 °F 23.2 °F
March 52.7 °F 32.8 °F
April 65.2 °F 42.9 °F
May 75.3 °F 54.0 °F
June 83.6 °F 62.9 °F
July 86.4 °F 65.8 °F
August 85.0 °F 63.9 °F
September 79.8 °F 55.4 °F
October 67.0 °F 44.2 °F
November 52.3 °F 33.8 °F
December 40.3 °F 24.8 °F
Year 63.7 °F 43.7 °F
Weather Station Details
Years Station Coordinates
1901–2024 Springfield Capital Airport location
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