Average annual temperature is 13.8 °C
Absolute maximum temperature: 34.7 °C
Absolute minimum temperature: -9.1 °C
Number of sunny days: 189 days
Number of rainy days: 172 days
Number of snow days: 4 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) | 17.4 | 22.2 | 23.6 | 27.6 | 29.8 | 32.9 | 34.2 | 34.7 | 32.6 | 30.1 | 25.7 | 16.5 |
| Average daytime temperature (°C) | 8.0 | 12.6 | 13.0 | 19.5 | 24.0 | 27.9 | 30.3 | 29.1 | 27.1 | 20.8 | 13.8 | 9.7 |
| Average temperature (°C) | 4.0 | 5.7 | 6.6 | 12.3 | 17.6 | 21.6 | 24.6 | 23.5 | 20.9 | 14.9 | 7.8 | 5.0 |
| Average night temperature (°C) | 0.8 | 0.8 | 1.8 | 6.4 | 11.5 | 16.1 | 19.8 | 18.5 | 15.5 | 10.4 | 3.4 | 1.6 |
| Absolute minimum temperature (°C) | -6.9 | -9.1 | -6.6 | -1.5 | 4.4 | 10.3 | 15.6 | 13.3 | 10.0 | -2.9 | -6.6 | -6.6 |
| 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 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.7 | 12.0 | 13.2 | 14.3 | 14.9 | 14.6 | 13.7 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 4.3 | 7.7 | 7.2 | 9.3 | 10.7 | 10.7 | 11.6 | 11.3 | 10.5 | 7.6 | 8.0 | 4.8 |
| Precipitation (mm) | 124 | 58 | 222 | 99 | 70 | 90 | 108 | 91 | 22 | 72 | 22 | 56 |
| Sunny days | 8 | 17 | 15 | 15 | 19 | 16 | 7 | 15 | 19 | 18 | 25 | 15 |
| Rainy days | 20 | 11 | 15 | 15 | 12 | 14 | 24 | 16 | 11 | 13 | 5 | 16 |
| Snow days | 3 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Cortland during the most sunny months:
The largest precipitation sum in Cortland is at