Average annual temperature is 9.2 °C
Absolute maximum temperature: 30.6 °C
Absolute minimum temperature: -30.4 °C
Number of sunny days: 104 days
Number of rainy days: 226 days
Number of snow days: 35 days
Look at detailed online map of Cortland County
* Weather data for Cortland County 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) | 12.9 | 15.4 | 12.2 | 26.8 | 28.9 | 29.9 | 30.6 | 26.8 | 30.3 | 27.3 | 14.4 | 11.8 |
| Average daytime temperature (°C) | 3.1 | 4.8 | 4.7 | 15.9 | 19.1 | 22.6 | 26.4 | 23.2 | 21.6 | 15.7 | 7.0 | 5.5 |
| Average temperature (°C) | -0.1 | -1.2 | 0.0 | 9.1 | 12.5 | 17.3 | 21.1 | 18.6 | 16.5 | 11.4 | 2.7 | 2.1 |
| Average night temperature (°C) | -2.8 | -5.9 | -4.0 | 3.7 | 6.5 | 12.8 | 16.8 | 14.9 | 12.6 | 7.9 | -0.5 | -0.2 |
| Absolute minimum temperature (°C) | -10.7 | -30.4 | -11.2 | -6.0 | -0.7 | 7.9 | 12.6 | 9.2 | 5.5 | 0.2 | -6.3 | -7.0 |
| 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) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.3 | 15.0 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 2.0 | 5.0 | 5.4 | 8.5 | 11.7 | 10.7 | 11.3 | 9.9 | 8.8 | 6.0 | 5.2 | 3.2 |
| Precipitation (mm) | 103 | 77 | 121 | 108 | 60 | 145 | 174 | 209 | 70 | 97 | 61 | 140 |
| Sunny days | 5 | 7 | 8 | 11 | 19 | 7 | 5 | 7 | 13 | 6 | 8 | 8 |
| Rainy days | 18 | 11 | 16 | 19 | 12 | 23 | 26 | 24 | 17 | 25 | 15 | 20 |
| Snow days | 8 | 10 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 3 |
The best time to visit Cortland County during the most sunny months:
Months with the longest average daylight duration in Cortland County:
The largest precipitation sum in Cortland County is at