Average annual temperature is 12.2 °C
Absolute maximum temperature: 34.0 °C
Absolute minimum temperature: -17.9 °C
Number of sunny days: 169 days
Number of rainy days: 188 days
Number of snow days: 8 days
Look at detailed online map of Morris County
* Weather data for Morris 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) | 17.8 | 18.4 | 15.3 | 31.5 | 28.8 | 34.0 | 32.5 | 30.2 | 33.5 | 27.3 | 18.8 | 15.5 |
| Average daytime temperature (°C) | 7.6 | 7.7 | 9.4 | 18.2 | 21.7 | 25.4 | 28.9 | 26.5 | 23.2 | 18.6 | 10.2 | 8.2 |
| Average temperature (°C) | 3.9 | 2.6 | 4.2 | 12.0 | 15.2 | 19.5 | 23.6 | 21.8 | 18.8 | 13.9 | 5.6 | 4.3 |
| Average night temperature (°C) | 0.9 | -1.6 | -0.1 | 7.0 | 9.5 | 14.7 | 19.6 | 17.9 | 15.3 | 10.3 | 1.8 | 1.2 |
| Absolute minimum temperature (°C) | -4.5 | -17.9 | -5.1 | -2.1 | 4.0 | 9.1 | 16.1 | 14.8 | 9.3 | 4.3 | -4.9 | -5.4 |
| 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) | 4.7 | 6.5 | 7.4 | 9.0 | 11.9 | 10.6 | 11.7 | 9.8 | 8.0 | 7.7 | 7.5 | 4.7 |
| Precipitation (mm) | 137 | 44 | 102 | 130 | 42 | 95 | 120 | 101 | 184 | 78 | 85 | 230 |
| Sunny days | 13 | 18 | 13 | 15 | 21 | 9 | 7 | 10 | 13 | 17 | 18 | 15 |
| Rainy days | 17 | 8 | 16 | 15 | 10 | 21 | 24 | 21 | 17 | 14 | 11 | 14 |
| Snow days | 1 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The best time to visit Morris County during the most sunny months:
The largest precipitation sum in Morris County is at