Norwalk, Connecticut Climate by Month
Norwalk, Connecticut, United States
Warm summers and cold winters, with rain spread through the year.
The climate in Norwalk is one of warm summers and cold winters, with rain spread through the year. Afternoon highs range from 38°F (4°C) in January to 85°F (29°C) in July, and January nights average 22°F (-5°C). It gets 47 in (1205 mm) of rain a year, spread across the months.
- Warmest month
- 85°F(29°C)
- Average high, July
- Coldest nights
- 22°F(-5°C)
- Average low, January
- Rain per year
- 47 in(1205 mm)
- No clear rainy season
- Humidity
- 68%
- Sunniest: July
Best and worst months in Norwalk
Best for weatherMay and September are the best time for weather in Norwalk: highs near 73°F (23°C) and about 4.0 in (101 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 38°F (4°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)
Norwalk weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 38°F(4°C) | 22°F(-5°C) | 3.5 in(90 mm) | 70% | 1.8 |
| FebFebruary | 41°F(5°C) | 24°F(-5°C) | 3.1 in(79 mm) | 65% | 2.6 |
| MarMarch | 49°F(9°C) | 31°F(-1°C) | 4.4 in(111 mm) | 60% | 3.6 |
| AprApril | 60°F(16°C) | 40°F(4°C) | 4.2 in(106 mm) | 57% | 4.5 |
| MayMayBest | 71°F(22°C) | 49°F(10°C) | 3.9 in(99 mm) | 68% | 5.3 |
| JunJune | 80°F(27°C) | 59°F(15°C) | 4.2 in(107 mm) | 69% | 5.7 |
| JulJuly | 85°F(29°C) | 65°F(18°C) | 3.9 in(98 mm) | 68% | 5.8 |
| AugAugust | 83°F(28°C) | 64°F(18°C) | 3.9 in(98 mm) | 71% | 5.1 |
| SepSeptemberBest | 76°F(25°C) | 56°F(14°C) | 4.1 in(103 mm) | 73% | 4.0 |
| OctOctober | 65°F(18°C) | 45°F(7°C) | 4.4 in(113 mm) | 75% | 2.8 |
| NovNovember | 54°F(12°C) | 36°F(2°C) | 3.7 in(93 mm) | 70% | 1.9 |
| DecDecember | 44°F(6°C) | 28°F(-2°C) | 4.3 in(108 mm) | 71% | 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 Norwalk →- 🇺🇸New BedfordMassachusetts, United States · Pop. 101k99%matchSame winter lowsSimilar rainfallNorwalk vs New Bedford →
- 🇺🇸ProvidenceRhode Island, United States · Pop. 191k99%matchSame summer highsSame humidityNorwalk vs Providence →
- 🇺🇸New LondonConnecticut, United States · Pop. 27k99%matchSame winter lowsSame sunshineNorwalk vs New London →
- 🇺🇸Staten IslandNew York, United States · Pop. 469k99%matchSame summer highsSimilar rainfallNorwalk vs Staten Island →
- 🇺🇸SayrevilleNew Jersey, United States · Pop. 45k99%matchSame winter lowsSame summer highsNorwalk vs Sayreville →