Cape Girardeau Average Temperature by Month

This page shows the average temperature in each month of the year in Cape Girardeau, Missouri. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Cape Girardeau?
In Cape Girardeau, Missouri, the warmest month is July, with an average daily high temperature of 89.2 °F and an average low of 68.9 °F.
What's the Coldest Month in Cape Girardeau?
In Cape Girardeau, Missouri, the coolest month is January, with an average daily high temperature of 43.0 °F and an average low of 25.8 °F.
Month Avg. High Avg. Low
January 43.0 °F 25.8 °F
February 48.2 °F 29.3 °F
March 58.1 °F 37.1 °F
April 69.2 °F 46.8 °F
May 78.2 °F 57.3 °F
June 86.6 °F 65.4 °F
July 89.2 °F 68.9 °F
August 88.3 °F 66.0 °F
September 81.8 °F 57.3 °F
October 70.9 °F 45.9 °F
November 56.8 °F 36.3 °F
December 46.3 °F 29.4 °F
Year 68.2 °F 47.2 °F
Weather Station Details
Years Station Coordinates
1960–2024 Cape Girardeau Municipal Airport location
1945–1960 Cape Girardeau Missour State University location