Newton, Massachusetts Climate by Month
Newton, Massachusetts, United States
Warm summers and cold winters, with rain spread through the year.
Warm summers and cold winters, with rain spread through the year: that's Newton's climate in short. Afternoon highs range from 36°F (2°C) in January to 84°F (29°C) in July, and January nights average 18°F (-8°C). It gets 47 in (1185 mm) of rain a year, spread across the months.
- Warmest month
- 84°F(29°C)
- Average high, July
- Coldest nights
- 18°F(-8°C)
- Average low, January
- Rain per year
- 47 in(1185 mm)
- No clear rainy season
- Humidity
- 70%
- Sunniest: July
Best and worst months in Newton
Best for weatherThe most comfortable weather comes in June and September, with highs around 76°F (25°C) and about 3.7 in (95 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 36°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)
Newton weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 36°F(2°C) | 18°F(-8°C) | 3.7 in(94 mm) | 79% | 1.7 |
| FebFebruary | 39°F(4°C) | 20°F(-7°C) | 3.2 in(82 mm) | 73% | 2.6 |
| MarMarch | 47°F(8°C) | 27°F(-3°C) | 4.6 in(117 mm) | 68% | 3.5 |
| AprApril | 58°F(15°C) | 37°F(3°C) | 3.9 in(100 mm) | 63% | 4.6 |
| MayMay | 69°F(21°C) | 47°F(8°C) | 3.3 in(84 mm) | 61% | 5.1 |
| JunJuneBest | 78°F(25°C) | 56°F(13°C) | 3.8 in(96 mm) | 67% | 5.5 |
| JulJuly | 84°F(29°C) | 62°F(17°C) | 3.7 in(95 mm) | 69% | 5.7 |
| AugAugust | 83°F(28°C) | 61°F(16°C) | 3.7 in(94 mm) | 71% | 5.1 |
| SepSeptemberBest | 75°F(24°C) | 54°F(12°C) | 3.7 in(94 mm) | 72% | 3.9 |
| OctOctober | 64°F(18°C) | 42°F(6°C) | 4.5 in(114 mm) | 73% | 2.6 |
| NovNovember | 53°F(12°C) | 33°F(1°C) | 4.0 in(102 mm) | 64% | 1.8 |
| DecDecember | 42°F(6°C) | 25°F(-4°C) | 4.4 in(113 mm) | 78% | 1.4 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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