Average annual temperature is 8.3 °C
Absolute maximum temperature: 28.8 °C
Absolute minimum temperature: -27.4 °C
Number of sunny days: 119 days
Number of rainy days: 211 days
Number of snow days: 35 days
Look at detailed online map of Johnstown
* Weather data for Johnstown 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) | 11.2 | 7.1 | 6.7 | 12.2 | 23.0 | 26.5 | 28.8 | 23.7 | 26.6 | 20.8 | 13.5 | 12.1 |
| Average daytime temperature (°C) | 4.2 | -0.2 | 1.9 | 7.7 | 11.7 | 17.5 | 23.3 | 21.6 | 20.7 | 15.2 | 6.9 | 4.6 |
| Average temperature (°C) | 1.3 | -4.0 | -0.6 | 3.9 | 7.7 | 13.7 | 20.3 | 19.2 | 17.7 | 12.5 | 4.4 | 2.3 |
| Average night temperature (°C) | -1.1 | -7.3 | -2.6 | 1.0 | 4.7 | 10.9 | 18.2 | 17.3 | 15.6 | 10.4 | 2.4 | 0.4 |
| Absolute minimum temperature (°C) | -7.1 | -27.4 | -8.3 | -4.0 | 0.9 | 7.3 | 15.2 | 12.7 | 10.0 | 3.3 | -3.5 | -4.3 |
| 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) | 9.1 | 10.4 | 11.9 | 13.5 | 14.9 | 15.7 | 15.3 | 14.1 | 12.5 | 10.9 | 9.5 | 8.7 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 2.6 | 5.1 | 6.1 | 9.3 | 9.3 | 7.2 | 7.3 | 8.9 | 8.0 | 6.3 | 4.4 | 3.4 |
| Precipitation (mm) | 229 | 95 | 94 | 39 | 94 | 74 | 198 | 210 | 87 | 224 | 206 | 258 |
| Sunny days | 8 | 8 | 13 | 17 | 12 | 12 | 8 | 5 | 11 | 11 | 4 | 10 |
| Rainy days | 18 | 11 | 6 | 10 | 19 | 18 | 23 | 26 | 19 | 20 | 24 | 17 |
| Snow days | 5 | 9 | 12 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 4 |
The best time to visit Johnstown during the most sunny months:
Months with the longest average daylight duration in Johnstown:
The largest precipitation sum in Johnstown is at