Westfield, Massachusetts Climate by Month
Westfield, Massachusetts, United States
Warm summers and freezing winters, with rain spread through the year.
The climate in Westfield is one of warm summers and freezing winters, with rain spread through the year. July is the warmest month, with highs around 85°F (29°C); January is the coolest at 35°F (2°C), and nights dip to 16°F (-9°C). About 45 in (1153 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 85°F(29°C)
- Average high, July
- Coldest nights
- 16°F(-9°C)
- Average low, January
- Rain per year
- 45 in(1153 mm)
- No clear rainy season
- Humidity
- 65%
- Sunniest: July
Best and worst months in Westfield
Best for weatherMay, June and September are the best time for weather in Westfield: highs near 76°F (24°C) and about 4.0 in (102 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 35°F (2°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)
Westfield weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 35°F(2°C) | 16°F(-9°C) | 3.3 in(84 mm) | 65% | 1.7 |
| FebFebruary | 38°F(3°C) | 17°F(-8°C) | 3.1 in(78 mm) | 60% | 2.5 |
| MarMarch | 46°F(8°C) | 26°F(-3°C) | 3.8 in(97 mm) | 56% | 3.5 |
| AprApril | 59°F(15°C) | 36°F(2°C) | 3.8 in(96 mm) | 54% | 4.5 |
| MayMayBest | 71°F(22°C) | 46°F(8°C) | 3.8 in(97 mm) | 60% | 5.1 |
| JunJuneBest | 80°F(26°C) | 55°F(13°C) | 4.1 in(105 mm) | 70% | 5.5 |
| JulJuly | 85°F(29°C) | 60°F(16°C) | 3.9 in(99 mm) | 69% | 5.7 |
| AugAugust | 83°F(29°C) | 59°F(15°C) | 3.5 in(90 mm) | 73% | 5.1 |
| SepSeptemberBest | 77°F(25°C) | 51°F(11°C) | 4.1 in(103 mm) | 74% | 4.0 |
| OctOctober | 64°F(18°C) | 40°F(4°C) | 4.4 in(111 mm) | 68% | 2.6 |
| NovNovember | 52°F(11°C) | 31°F(0°C) | 3.5 in(88 mm) | 67% | 1.8 |
| DecDecember | 40°F(5°C) | 23°F(-5°C) | 4.1 in(105 mm) | 66% | 1.4 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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