Hillsboro Average Temperature by Month

This page shows the average temperature in each month of the year in Hillsboro, Ohio. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Hillsboro?
In Hillsboro, Ohio, the warmest month is July, with an average daily high temperature of 83.4 °F and an average low of 63.6 °F.
What's the Coldest Month in Hillsboro?
In Hillsboro, Ohio, the coolest month is January, with an average daily high temperature of 37.5 °F and an average low of 21.1 °F.
Month Avg. High Avg. Low
January 37.5 °F 21.1 °F
February 42.1 °F 24.3 °F
March 51.1 °F 31.0 °F
April 63.6 °F 41.0 °F
May 72.1 °F 51.4 °F
June 80.2 °F 60.0 °F
July 83.4 °F 63.6 °F
August 82.1 °F 62.1 °F
September 76.6 °F 54.6 °F
October 65.3 °F 43.5 °F
November 52.5 °F 33.2 °F
December 42.1 °F 26.4 °F
Year 62.6 °F 42.8 °F
Weather Station Details
Years Station Coordinates
1893–2024 Hillsboro location
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