Hannibal Average Temperature by Month

This page shows the average temperature in each month of the year in Hannibal, Missouri. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Hannibal?
In Hannibal, Missouri, the warmest month is July, with an average daily high temperature of 85.7 °F and an average low of 67.3 °F.
What's the Coldest Month in Hannibal?
In Hannibal, Missouri, the coolest month is January, with an average daily high temperature of 34.6 °F and an average low of 17.6 °F.
Month Avg. High Avg. Low
January 34.6 °F 17.6 °F
February 39.6 °F 21.7 °F
March 51.4 °F 32.1 °F
April 63.7 °F 42.8 °F
May 73.3 °F 54.0 °F
June 82.1 °F 63.6 °F
July 85.7 °F 67.3 °F
August 84.4 °F 65.2 °F
September 77.9 °F 56.9 °F
October 65.7 °F 45.0 °F
November 51.5 °F 33.5 °F
December 39.3 °F 23.4 °F
Year 62.6 °F 43.8 °F
Weather Station Details
Years Station Coordinates
1933–2024 Hannibal Water Works location
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