Average annual temperature is 7.9 °C
Absolute maximum temperature: 32.7 °C
Absolute minimum temperature: -34.5 °C
Number of sunny days: 129 days
Number of rainy days: 188 days
Number of snow days: 48 days
Look at detailed online map of Lanark County
* Weather data for Lanark County 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) | 5.5 | 10.4 | 8.6 | 27.8 | 32.0 | 32.6 | 31.3 | 26.9 | 32.7 | 29.6 | 14.7 | 9.6 |
| Average daytime temperature (°C) | -1.1 | 0.5 | 3.2 | 14.2 | 19.1 | 23.8 | 26.3 | 23.2 | 22.7 | 15.4 | 5.1 | 2.2 |
| Average temperature (°C) | -4.7 | -6.3 | -1.6 | 7.3 | 12.5 | 18.3 | 21.2 | 18.5 | 17.0 | 11.3 | 1.0 | -1.2 |
| Average night temperature (°C) | -7.9 | -12.0 | -5.7 | 1.7 | 6.5 | 13.5 | 16.8 | 14.5 | 12.4 | 8.2 | -2.3 | -3.8 |
| Absolute minimum temperature (°C) | -18.9 | -34.5 | -14.1 | -9.5 | 0.9 | 9.3 | 12.2 | 9.6 | 7.6 | -2.3 | -8.7 | -16.2 |
| 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 | 9.0 |
| Daylight mean duration (h) | 9.2 | 10.4 | 11.9 | 13.5 | 14.9 | 15.6 | 15.2 | 14.0 | 12.5 | 11.0 | 9.6 | 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) | 2.6 | 5.0 | 6.1 | 8.2 | 11.1 | 10.3 | 11.8 | 10.1 | 9.6 | 5.3 | 4.6 | 2.6 |
| Precipitation (mm) | 106 | 75 | 76 | 91 | 88 | 95 | 162 | 164 | 18 | 76 | 45 | 97 |
| Sunny days | 7 | 7 | 12 | 13 | 21 | 9 | 2 | 8 | 19 | 10 | 12 | 9 |
| Rainy days | 9 | 9 | 9 | 17 | 10 | 21 | 29 | 23 | 11 | 21 | 14 | 15 |
| Snow days | 15 | 12 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 7 |
The best time to visit Lanark County during the most sunny months:
Months with the longest average daylight duration in Lanark County:
The largest precipitation sum in Lanark County is at