Lee's Summit Average Temperature by Month

This page shows the average temperature in each month of the year in Lee's Summit, Missouri. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Lee's Summit?
In Lee's Summit, Missouri, the warmest month is July, with an average daily high temperature of 88.0 °F and an average low of 68.2 °F.
What's the Coldest Month in Lee's Summit?
In Lee's Summit, Missouri, the coolest month is January, with an average daily high temperature of 39.5 °F and an average low of 20.2 °F.
Month Avg. High Avg. Low
January 39.5 °F 20.2 °F
February 44.5 °F 24.4 °F
March 55.8 °F 34.5 °F
April 65.8 °F 44.3 °F
May 74.9 °F 54.8 °F
June 83.7 °F 64.1 °F
July 88.0 °F 68.2 °F
August 86.7 °F 66.5 °F
September 79.0 °F 58.0 °F
October 67.3 °F 46.1 °F
November 53.8 °F 34.7 °F
December 42.8 °F 25.1 °F
Year 65.3 °F 45.3 °F
Weather Station Details
Years Station Coordinates
2003–2024 Lee's Summit Municipal Airport location
1962–2002 Lee's Summit Reed WR location