Nashua Average Temperature by Month

This page shows the average temperature in each month of the year in Nashua, New Hampshire. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Nashua?
In Nashua, New Hampshire, the warmest month is July, with an average daily high temperature of 83.9 °F and an average low of 60.9 °F.
What's the Coldest Month in Nashua?
In Nashua, New Hampshire, the coolest month is January, with an average daily high temperature of 33.8 °F and an average low of 14.2 °F.
Month Avg. High Avg. Low
January 33.8 °F 14.2 °F
February 37.2 °F 15.7 °F
March 45.0 °F 23.8 °F
April 58.4 °F 34.1 °F
May 69.6 °F 45.5 °F
June 78.2 °F 55.0 °F
July 83.9 °F 60.9 °F
August 82.1 °F 58.7 °F
September 74.8 °F 50.7 °F
October 62.3 °F 38.7 °F
November 50.2 °F 29.4 °F
December 39.6 °F 21.0 °F
Year 59.8 °F 37.6 °F
Weather Station Details
Years Station Coordinates
1885–2024 Nashua 2 NNW location
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