Amherst, Massachusetts Climate by Month
Amherst, Massachusetts, United States
Warm summers and freezing winters, with rain spread through the year.
Amherst has warm summers and freezing winters, with rain spread through the year. July is the warmest month, with highs around 84°F (29°C); January is the coolest at 35°F (1°C), and nights dip to 14°F (-10°C). About 45 in (1140 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 84°F(29°C)
- Average high, July
- Coldest nights
- 14°F(-10°C)
- Average low, January
- Rain per year
- 45 in(1140 mm)
- No clear rainy season
- Humidity
- 67%
- Sunniest: July
Best and worst months in Amherst
Best for weatherMay, June and September are the best time for weather in Amherst: highs near 75°F (24°C) and about 3.9 in (99 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 35°F (1°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in September.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Amherst weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 35°F(1°C) | 14°F(-10°C) | 3.3 in(85 mm) | 67% | 1.6 |
| FebFebruary | 37°F(3°C) | 15°F(-9°C) | 2.9 in(73 mm) | 62% | 2.5 |
| MarMarch | 46°F(8°C) | 25°F(-4°C) | 3.7 in(93 mm) | 58% | 3.5 |
| AprApril | 58°F(15°C) | 35°F(2°C) | 3.7 in(95 mm) | 56% | 4.6 |
| MayMayBest | 70°F(21°C) | 45°F(7°C) | 3.6 in(92 mm) | 62% | 5.2 |
| JunJuneBest | 79°F(26°C) | 54°F(12°C) | 4.0 in(101 mm) | 73% | 5.6 |
| JulJuly | 84°F(29°C) | 60°F(15°C) | 4.2 in(107 mm) | 71% | 5.8 |
| AugAugust | 83°F(28°C) | 58°F(15°C) | 3.5 in(90 mm) | 71% | 5.1 |
| SepSeptemberBest | 76°F(24°C) | 51°F(10°C) | 4.1 in(105 mm) | 75% | 4.0 |
| OctOctober | 64°F(18°C) | 39°F(4°C) | 4.5 in(114 mm) | 70% | 2.6 |
| NovNovember | 51°F(11°C) | 31°F(-1°C) | 3.3 in(85 mm) | 69% | 1.8 |
| DecDecember | 40°F(5°C) | 22°F(-5°C) | 3.9 in(100 mm) | 68% | 1.4 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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