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Amherst Weather by Month
Average temperatures, rainfall and humidity for Amherst, United States, month by month, built from OpenWeather’s historical records. Use it to see what a typical Amherst month looks like before you travel — then check the live Amherst forecast for the days ahead.
Warmest month
July
27°C average high
Coolest month
February
-6°C average low
Wettest month
October
98 mm of rain
Driest month
February
24 mm of rain
Average temperature and rainfall in Amherst by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 0°C | -6°C | -19°C / 16°C | 30 mm | 77% | 18 km/h |
| February | 1°C | -6°C | -24°C / 19°C | 24 mm | 74% | 18 km/h |
| March | 7°C | -2°C | -18°C / 24°C | 42 mm | 70% | 17 km/h |
| April | 13°C | 3°C | -6°C / 28°C | 74 mm | 68% | 16 km/h |
| May | 20°C | 10°C | -2°C / 33°C | 68 mm | 68% | 13 km/h |
| June | 25°C | 15°C | 5°C / 33°C | 97 mm | 68% | 12 km/h |
| July | 27°C | 18°C | 10°C / 35°C | 60 mm | 69% | 12 km/h |
| August | 26°C | 17°C | 7°C / 34°C | 69 mm | 71% | 12 km/h |
| September | 23°C | 14°C | 2°C / 32°C | 66 mm | 75% | 12 km/h |
| October | 16°C | 8°C | -4°C / 29°C | 98 mm | 75% | 14 km/h |
| November | 9°C | 2°C | -13°C / 26°C | 52 mm | 72% | 16 km/h |
| December | 4°C | -2°C | -17°C / 19°C | 53 mm | 78% | 17 km/h |
Best time to visit Amherst
The most comfortable time to visit Amherst is generally June and August to September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around October, totalling about 734 mm a year.
Travellers who prefer heat should aim for July, when highs average 27°C. October is the month to avoid if rain would spoil your plans — it averages 98 mm, roughly 4× the rainfall of the driest month (February).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Amherst forecast for what is happening now.