Bristol, Connecticut Climate by Month
Bristol, Connecticut, United States
Warm summers and cold winters, with rain spread through the year.
The climate in Bristol is one of warm summers and cold winters, with rain spread through the year. July is the warmest month, with highs around 84°F (29°C); January is the coolest at 36°F (2°C), and nights dip to 18°F (-8°C). About 47 in (1191 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 84°F(29°C)
- Average high, July
- Coldest nights
- 18°F(-8°C)
- Average low, January
- Rain per year
- 47 in(1191 mm)
- No clear rainy season
- Humidity
- 70%
- Sunniest: July
Best and worst months in Bristol
Best for weatherThe most comfortable weather comes in September, with highs around 75°F (24°C) and about 4.2 in (106 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)
Bristol weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 36°F(2°C) | 18°F(-8°C) | 3.4 in(87 mm) | 80% | 1.7 |
| FebFebruary | 39°F(4°C) | 20°F(-7°C) | 3.2 in(82 mm) | 74% | 2.5 |
| MarMarch | 47°F(8°C) | 27°F(-3°C) | 4.1 in(103 mm) | 67% | 3.5 |
| AprApril | 59°F(15°C) | 37°F(3°C) | 4.0 in(101 mm) | 61% | 4.5 |
| MayMay | 71°F(21°C) | 47°F(9°C) | 3.9 in(99 mm) | 65% | 5.2 |
| JunJune | 79°F(26°C) | 57°F(14°C) | 4.3 in(110 mm) | 69% | 5.6 |
| JulJuly | 84°F(29°C) | 62°F(17°C) | 3.8 in(97 mm) | 69% | 5.7 |
| AugAugust | 82°F(28°C) | 61°F(16°C) | 3.6 in(91 mm) | 73% | 5.1 |
| SepSeptemberBest | 75°F(24°C) | 53°F(12°C) | 4.2 in(106 mm) | 73% | 4.0 |
| OctOctober | 64°F(18°C) | 42°F(5°C) | 4.4 in(111 mm) | 74% | 2.7 |
| NovNovember | 52°F(11°C) | 33°F(1°C) | 3.7 in(94 mm) | 65% | 1.8 |
| DecDecember | 41°F(5°C) | 24°F(-4°C) | 4.3 in(110 mm) | 64% | 1.4 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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