Waterbury Climate by Month
Waterbury, Connecticut, United States
Warm summers and cold winters, with rain spread through the year.
Waterbury has 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 19°F (-7°C). It gets 48 in (1212 mm) of rain a year, spread across the months.
- Warmest month
- 84°F(29°C)
- Average high, July
- Coldest nights
- 19°F(-7°C)
- Average low, January
- Rain per year
- 48 in(1212 mm)
- No clear rainy season
- Humidity
- 69%
- Sunniest: July
Best and worst months in Waterbury
Best for weatherThe most comfortable weather comes in September, with highs around 75°F (24°C) and about 4.2 in (107 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)
Waterbury weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 36°F(2°C) | 19°F(-7°C) | 3.5 in(88 mm) | 79% | 1.7 |
| FebFebruary | 39°F(4°C) | 20°F(-6°C) | 3.2 in(82 mm) | 72% | 2.5 |
| MarMarch | 47°F(9°C) | 28°F(-2°C) | 4.1 in(104 mm) | 65% | 3.5 |
| AprApril | 60°F(15°C) | 38°F(3°C) | 4.1 in(105 mm) | 60% | 4.5 |
| MayMay | 71°F(22°C) | 48°F(9°C) | 4.0 in(102 mm) | 64% | 5.2 |
| JunJune | 79°F(26°C) | 57°F(14°C) | 4.4 in(111 mm) | 68% | 5.6 |
| JulJuly | 84°F(29°C) | 62°F(17°C) | 4.0 in(102 mm) | 68% | 5.7 |
| AugAugust | 82°F(28°C) | 61°F(16°C) | 3.6 in(91 mm) | 72% | 5.0 |
| SepSeptemberBest | 75°F(24°C) | 54°F(12°C) | 4.2 in(107 mm) | 73% | 4.0 |
| OctOctober | 64°F(18°C) | 42°F(6°C) | 4.4 in(113 mm) | 74% | 2.7 |
| NovNovember | 52°F(11°C) | 33°F(1°C) | 3.8 in(96 mm) | 65% | 1.8 |
| DecDecember | 42°F(5°C) | 25°F(-4°C) | 4.4 in(111 mm) | 62% | 1.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
All 20 places like Waterbury →- 🇺🇸Kiryas JoelNew York, United States · Pop. 33k99%matchSame winter lowsSame summer highsWaterbury vs Kiryas Joel →
- 🇺🇸RandolphNew Jersey, United States · Pop. 26k99%matchSame summer highsSame winter lowsWaterbury vs Randolph →
- 🇺🇸ProvidenceRhode Island, United States · Pop. 191k99%matchSame summer highsSame winter lowsWaterbury vs Providence →
- 🇺🇸BostonMassachusetts, United States · Pop. 654k98%matchSame summer highsSame winter lowsWaterbury vs Boston →
- 🇺🇸NorwichConnecticut, United States · Pop. 40k98%matchSame winter lowsSame summer highsWaterbury vs Norwich →