Bluffton Average Temperature by Month

This page shows the average temperature in each month of the year in Bluffton, Indiana. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Bluffton?
In Bluffton, Indiana, 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 Bluffton?
In Bluffton, Indiana, the coolest month is January, with an average daily high temperature of 32.7 °F and an average low of 17.0 °F.
Month Avg. High Avg. Low
January 32.7 °F 17.0 °F
February 36.4 °F 19.4 °F
March 47.4 °F 28.1 °F
April 61.0 °F 39.5 °F
May 71.7 °F 50.8 °F
June 80.3 °F 60.6 °F
July 83.4 °F 63.6 °F
August 81.5 °F 61.5 °F
September 76.5 °F 54.0 °F
October 64.1 °F 42.9 °F
November 49.8 °F 32.8 °F
December 37.8 °F 23.3 °F
Year 60.3 °F 41.2 °F
Weather Station Details
Years Station Coordinates
1970–2023 Bluffton 6N location
1969–1971 Bluffton 1 N location
1949–1969 Bluffton location
1895–1948 Bluffton Water Works location
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