Average annual temperature is 13.4 °C
Absolute maximum temperature: 40.4 °C
Absolute minimum temperature: -16.9 °C
Number of sunny days: 234 days
Number of rainy days: 119 days
Number of snow days: 12 days
Look at detailed online map of Herkimer
* Weather data for Herkimer 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 | 16.7 | 22.9 | 29.9 | 32.4 | 36.0 | 38.1 | 40.4 | 36.2 | 32.8 | 22.7 | 16.5 |
| Average daytime temperature (°C) | 4.5 | 8.6 | 10.6 | 20.9 | 26.7 | 30.2 | 30.9 | 32.5 | 29.2 | 20.4 | 13.1 | 7.9 |
| Average temperature (°C) | -0.4 | 1.1 | 4.4 | 12.9 | 19.9 | 24.0 | 25.0 | 26.1 | 22.8 | 14.5 | 7.1 | 3.3 |
| Average night temperature (°C) | -4.2 | -3.8 | -0.2 | 6.7 | 14.0 | 18.2 | 20.2 | 21.0 | 17.4 | 9.6 | 2.6 | -0.2 |
| Absolute minimum temperature (°C) | -14.5 | -16.9 | -9.2 | -3.8 | 4.3 | 11.4 | 15.1 | 13.9 | 10.9 | -5.0 | -5.7 | -4.9 |
| 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 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 6.2 | 8.4 | 7.8 | 10.3 | 11.0 | 12.4 | 11.5 | 11.6 | 10.4 | 7.9 | 7.1 | 5.1 |
| Precipitation (mm) | 31 | 44 | 27 | 23 | 54 | 78 | 114 | 46 | 22 | 40 | 29 | 62 |
| Sunny days | 22 | 21 | 20 | 23 | 14 | 15 | 13 | 20 | 23 | 20 | 23 | 20 |
| Rainy days | 4 | 5 | 11 | 7 | 17 | 15 | 18 | 11 | 7 | 10 | 6 | 8 |
| Snow days | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 3 |
The best time to visit Herkimer during the most sunny months:
The largest precipitation sum in Herkimer is at