Average annual temperature is 7.9 °C
Absolute maximum temperature: 30.7 °C
Absolute minimum temperature: -29.6 °C
Number of sunny days: 140 days
Number of rainy days: 188 days
Number of snow days: 37 days
Look at detailed online map of Smithtown
* Weather data for Smithtown Canada is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 9.1 | 10.5 | 7.3 | 18.6 | 30.7 | 29.3 | 28.5 | 25.0 | 27.2 | 24.5 | 13.1 | 14.9 |
| Average daytime temperature (°C) | 1.8 | -0.9 | 3.9 | 11.6 | 16.5 | 19.4 | 24.9 | 22.3 | 21.7 | 16.0 | 5.6 | 3.7 |
| Average temperature (°C) | -1.8 | -5.9 | -0.4 | 6.1 | 10.6 | 14.9 | 20.7 | 18.4 | 16.9 | 12.1 | 1.8 | 0.3 |
| Average night temperature (°C) | -5.2 | -11.1 | -4.2 | 1.7 | 5.9 | 11.2 | 17.6 | 15.3 | 13.5 | 9.2 | -1.3 | -2.8 |
| Absolute minimum temperature (°C) | -11.7 | -29.6 | -11.0 | -5.7 | 1.1 | 5.8 | 14.6 | 11.7 | 6.0 | 0.2 | -7.9 | -14.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 9.2 | 10.4 | 11.9 | 13.5 | 14.9 | 15.6 | 15.3 | 14.1 | 12.5 | 10.9 | 9.5 | 8.8 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 3.8 | 6.1 | 6.2 | 8.5 | 9.9 | 6.1 | 8.3 | 8.4 | 7.7 | 6.1 | 5.4 | 4.4 |
| Precipitation (mm) | 229 | 46 | 66 | 42 | 88 | 191 | 185 | 128 | 74 | 131 | 65 | 114 |
| Sunny days | 6 | 12 | 10 | 15 | 16 | 8 | 6 | 7 | 17 | 10 | 15 | 18 |
| Rainy days | 12 | 9 | 10 | 14 | 15 | 22 | 25 | 24 | 13 | 21 | 14 | 9 |
| Snow days | 13 | 7 | 11 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
The best time to visit Smithtown during the most sunny months:
Months with the longest average daylight duration in Smithtown:
The largest precipitation sum in Smithtown is at