Average annual temperature is 9.8 °C
Absolute maximum temperature: 31.6 °C
Absolute minimum temperature: -28.2 °C
Number of sunny days: 114 days
Number of rainy days: 224 days
Number of snow days: 27 days
Look at detailed online map of Onondaga County
* Weather data for Onondaga 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) | 12.6 | 16.4 | 14.5 | 28.0 | 29.8 | 31.5 | 31.6 | 28.5 | 31.4 | 29.0 | 14.6 | 12.6 |
| Average daytime temperature (°C) | 3.2 | 5.1 | 4.7 | 16.0 | 19.5 | 23.4 | 26.9 | 23.8 | 22.1 | 16.1 | 7.4 | 6.3 |
| Average temperature (°C) | -0.1 | -0.9 | 0.3 | 9.5 | 13.1 | 18.1 | 21.9 | 19.2 | 17.1 | 12.2 | 3.4 | 2.9 |
| Average night temperature (°C) | -2.9 | -5.8 | -3.6 | 4.2 | 7.5 | 13.5 | 17.9 | 15.7 | 13.4 | 9.1 | 0.5 | 0.5 |
| Absolute minimum temperature (°C) | -10.7 | -28.2 | -11.6 | -6.0 | 1.6 | 9.1 | 14.6 | 11.3 | 7.6 | 0.1 | -5.4 | -7.4 |
| 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) | 9.4 | 10.5 | 11.9 | 13.4 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 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 | 4.7 | 5.1 | 8.3 | 12.1 | 10.7 | 11.5 | 10.5 | 9.1 | 5.6 | 4.9 | 2.8 |
| Precipitation (mm) | 134 | 76 | 136 | 119 | 50 | 195 | 128 | 183 | 66 | 99 | 72 | 154 |
| Sunny days | 6 | 6 | 8 | 15 | 19 | 9 | 7 | 6 | 16 | 7 | 8 | 7 |
| Rainy days | 19 | 14 | 17 | 15 | 12 | 21 | 24 | 25 | 14 | 24 | 17 | 22 |
| Snow days | 6 | 8 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 2 |
The best time to visit Onondaga County during the most sunny months:
Months with the longest average daylight duration in Onondaga County:
The largest precipitation sum in Onondaga County is at