Oshkosh Average Temperature by Month

This page shows the average temperature in each month of the year in Oshkosh, Wisconsin. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Oshkosh?
In Oshkosh, Wisconsin, the warmest month is July, with an average daily high temperature of 81.6 °F and an average low of 62.9 °F.
What's the Coldest Month in Oshkosh?
In Oshkosh, Wisconsin, the coolest month is January, with an average daily high temperature of 26.0 °F and an average low of 10.4 °F.
Month Avg. High Avg. Low
January 26.0 °F 10.4 °F
February 29.8 °F 13.3 °F
March 41.2 °F 23.6 °F
April 54.3 °F 35.9 °F
May 67.2 °F 48.2 °F
June 77.2 °F 58.9 °F
July 81.6 °F 62.9 °F
August 79.7 °F 61.2 °F
September 72.6 °F 53.0 °F
October 58.9 °F 40.9 °F
November 44.2 °F 29.0 °F
December 31.7 °F 17.7 °F
Year 55.4 °F 38.0 °F
Weather Station Details
Years Station Coordinates
1893–2024 Oshkosh location
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