Average annual temperature is 11.1 °C
Absolute maximum temperature: 32.7 °C
Absolute minimum temperature: -11.9 °C
Number of sunny days: 139 days
Number of rainy days: 202 days
Number of snow days: 24 days
Look at detailed online map of Cortland
* Weather data for Cortland 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) | 14.3 | 19.6 | 17.5 | 28.0 | 31.7 | 32.7 | 32.0 | 29.9 | 31.8 | 27.4 | 17.0 | 14.7 |
| Average daytime temperature (°C) | 5.4 | 9.3 | 8.3 | 17.0 | 21.5 | 24.9 | 27.8 | 26.3 | 23.7 | 16.8 | 9.7 | 7.4 |
| Average temperature (°C) | 1.6 | 2.2 | 2.8 | 10.3 | 14.5 | 19.0 | 22.2 | 20.6 | 18.1 | 12.3 | 4.9 | 3.9 |
| Average night temperature (°C) | -1.1 | -2.3 | -1.0 | 4.8 | 8.6 | 13.9 | 17.7 | 16.3 | 13.7 | 8.8 | 1.3 | 1.2 |
| Absolute minimum temperature (°C) | -8.5 | -11.9 | -7.2 | -2.9 | 1.6 | 9.3 | 14.2 | 12.1 | 9.3 | 1.4 | -7.5 | -5.5 |
| 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 | 9.3 |
| 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) | 2.7 | 6.4 | 5.9 | 8.2 | 10.9 | 11.3 | 11.8 | 10.8 | 8.9 | 6.6 | 6.1 | 3.5 |
| Precipitation (mm) | 131 | 61 | 133 | 97 | 45 | 166 | 127 | 102 | 54 | 64 | 64 | 76 |
| Sunny days | 6 | 9 | 7 | 13 | 21 | 14 | 7 | 9 | 14 | 12 | 18 | 9 |
| Rainy days | 16 | 16 | 16 | 16 | 10 | 16 | 24 | 22 | 16 | 19 | 11 | 20 |
| Snow days | 9 | 3 | 8 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The best time to visit Cortland during the most sunny months:
The largest precipitation sum in Cortland is at