Earliest and Latest Days of 100° F in Rochester

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Rochester, Massachusetts history. It is based on NOAA data from the years 1900–2024.
Earliest 100 degree day in Rochester?
The earliest in the year that Rochester, Massachusetts had a high temperature of at least 100 °F is July 11 which happened in 1993.
Latest 100 degree day in Rochester?
The latest in the year that Rochester, Massachusetts had a high temperature of at least 100 °F is August 10 which happened in 2001.

Earliest Days ≥ 100 °F

Date Year Temperature
July 11 1993 100 °F
July 21 1991 100 °F
July 22 1991 102 °F
August 3 2006 101 °F
August 3 1975 100 °F
August 10 2001 100 °F

Latest Days ≥ 100 °F

Date Year Temperature
August 10 2001 100 °F
August 3 2006 101 °F
August 3 1975 100 °F
July 22 1991 102 °F
July 21 1991 100 °F
July 11 1993 100 °F