Norwich, Connecticut Climate by Month
Norwich, Connecticut, United States
Warm summers and cold winters, with rain spread through the year.
The climate in Norwich is one of warm summers and cold winters, with rain spread through the year. Afternoon highs range from 38°F (3°C) in January to 82°F (28°C) in July, and January nights average 20°F (-7°C). About 49 in (1250 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 82°F(28°C)
- Average high, July
- Coldest nights
- 20°F(-7°C)
- Average low, January
- Rain per year
- 49 in(1250 mm)
- No clear rainy season
- Humidity
- 72%
- Sunniest: July
Best and worst months in Norwich
Best for weatherThe most comfortable weather comes in June and September, with highs around 76°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 38°F (3°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)
Norwich weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 38°F(3°C) | 20°F(-7°C) | 3.8 in(97 mm) | 75% | 1.7 |
| FebFebruary | 39°F(4°C) | 20°F(-7°C) | 3.3 in(84 mm) | 73% | 2.6 |
| MarMarch | 47°F(8°C) | 28°F(-2°C) | 4.7 in(119 mm) | 67% | 3.5 |
| AprApril | 57°F(14°C) | 37°F(3°C) | 4.3 in(110 mm) | 64% | 4.6 |
| MayMay | 68°F(20°C) | 47°F(8°C) | 3.3 in(85 mm) | 69% | 5.2 |
| JunJuneBest | 76°F(25°C) | 55°F(13°C) | 4.1 in(105 mm) | 74% | 5.7 |
| JulJuly | 82°F(28°C) | 62°F(17°C) | 3.9 in(98 mm) | 74% | 5.8 |
| AugAugust | 82°F(28°C) | 62°F(17°C) | 4.1 in(104 mm) | 75% | 5.2 |
| SepSeptemberBest | 75°F(24°C) | 55°F(13°C) | 4.2 in(107 mm) | 76% | 4.0 |
| OctOctober | 64°F(18°C) | 43°F(6°C) | 4.7 in(119 mm) | 72% | 2.8 |
| NovNovember | 54°F(12°C) | 34°F(1°C) | 4.1 in(103 mm) | 71% | 1.9 |
| DecDecember | 44°F(7°C) | 26°F(-3°C) | 4.7 in(119 mm) | 73% | 1.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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