Average annual temperature is 11.8 °C
Absolute maximum temperature: 37.8 °C
Absolute minimum temperature: -25.1 °C
Number of sunny days: 208 days
Number of rainy days: 138 days
Number of snow days: 19 days
Look at detailed online map of Norwalk
* Weather data for Norwalk United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 11.8 | 13.4 | 22.8 | 27.6 | 31.4 | 33.2 | 35.8 | 37.8 | 35.4 | 32.3 | 18.8 | 14.8 |
| Average daytime temperature (°C) | 1.0 | 5.0 | 8.2 | 17.7 | 24.9 | 29.1 | 29.4 | 29.2 | 27.1 | 18.4 | 11.1 | 7.0 |
| Average temperature (°C) | -3.2 | -1.3 | 2.2 | 10.6 | 18.3 | 23.1 | 23.8 | 24.1 | 21.1 | 13.5 | 5.6 | 2.7 |
| Average night temperature (°C) | -6.4 | -6.0 | -2.1 | 5.1 | 12.0 | 17.3 | 18.6 | 19.6 | 15.9 | 9.3 | 1.3 | -0.6 |
| Absolute minimum temperature (°C) | -25.1 | -24.0 | -12.5 | -4.6 | 2.0 | 9.4 | 13.0 | 13.2 | 10.3 | -3.7 | -11.4 | -6.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.8 | 7.2 | 7.1 | 9.2 | 11.2 | 12.3 | 12.0 | 11.4 | 10.7 | 7.5 | 7.1 | 4.8 |
| Precipitation (mm) | 59 | 53 | 56 | 50 | 44 | 40 | 109 | 93 | 25 | 66 | 10 | 53 |
| Sunny days | 18 | 17 | 15 | 17 | 18 | 16 | 16 | 14 | 20 | 17 | 22 | 18 |
| Rainy days | 6 | 9 | 12 | 12 | 13 | 14 | 15 | 17 | 10 | 13 | 6 | 11 |
| Snow days | 7 | 2 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 2 |
The best time to visit Norwalk during the most sunny months:
The largest precipitation sum in Norwalk is at