Fort Madison Average Temperature by Month

This page shows the average temperature in each month of the year in Fort Madison, Iowa. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Fort Madison?
In Fort Madison, Iowa, the warmest month is July, with an average daily high temperature of 85.5 °F and an average low of 68.3 °F.
What's the Coldest Month in Fort Madison?
In Fort Madison, Iowa, the coolest month is January, with an average daily high temperature of 33.2 °F and an average low of 17.7 °F.
Month Avg. High Avg. Low
January 33.2 °F 17.7 °F
February 38.0 °F 21.6 °F
March 50.4 °F 32.3 °F
April 62.6 °F 43.3 °F
May 72.7 °F 54.5 °F
June 82.0 °F 64.2 °F
July 85.5 °F 68.3 °F
August 84.3 °F 66.4 °F
September 77.6 °F 58.0 °F
October 64.7 °F 46.0 °F
November 50.1 °F 33.6 °F
December 38.0 °F 23.4 °F
Year 61.7 °F 44.2 °F
Weather Station Details
Years Station Coordinates
1893–2024 Fort Madison location
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