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Weather & Climate

Three Rivers, Massachusetts, United States

Overview

Climate data and monthly weather averages for Three Rivers.

Key Metrics

Annual Avg
9.4°C
Summer Avg
21.4°C
Winter Avg
-2.8°C
Record High
38.7°C
Record Low
-29.4°C
Annual Precipitation
1200.4 mm
Avg Humidity
80%
Summer Humidity
75%
Winter Humidity
88%

Monthly Averages

MonthHigh (°C)Avg (°C)Low (°C)Rain (mm)Humidity (%)Sunshine (h)Wind (kph)
Jan18.5°-4.4°-29.4°76.389%5433.7
Feb19.9°-3.3°-27.9°81.288%7232.2
Mar23.6°1.1°-24.6°96.183%11331.4
Apr32.5°7.7°-9.5°102.978%14127.7
May31.5°14.1°-1.4°92.778%16421.5
Jun35.4°19.2°3.2°11778%17217.8
Jul38.3°22.9°9.2°102.674%18415
Aug38.7°22.2°102.672%16425.2
Sep36.5°18.3°2.9°105.673%12922.6
Oct31.1°11.2°-8°123.478%8529.3
Nov23°4.7°-14.9°9082%5825.3
Dec19.9°-0.8°-21.9°11087%4430

Frequently Asked Questions

Sources: NASA POWER · Last updated: 2025

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