Average annual temperature is 11.9 °C
Absolute maximum temperature: 34.1 °C
Absolute minimum temperature: -19.0 °C
Number of sunny days: 158 days
Number of rainy days: 197 days
Number of snow days: 10 days
Look at detailed online map of Mahwah
* Weather data for Mahwah 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) | 18.0 | 18.3 | 14.6 | 31.2 | 28.1 | 34.1 | 32.1 | 30.0 | 33.3 | 27.3 | 18.8 | 15.3 |
| Average daytime temperature (°C) | 7.4 | 7.2 | 9.3 | 18.0 | 21.2 | 24.9 | 28.5 | 26.2 | 23.1 | 18.4 | 10.0 | 8.1 |
| Average temperature (°C) | 3.6 | 2.0 | 4.0 | 11.6 | 14.9 | 19.1 | 23.4 | 21.4 | 18.5 | 13.6 | 5.3 | 4.1 |
| Average night temperature (°C) | 0.5 | -2.1 | -0.3 | 6.8 | 9.1 | 14.4 | 19.3 | 17.6 | 15.1 | 10.0 | 1.5 | 1.1 |
| Absolute minimum temperature (°C) | -3.8 | -19.0 | -4.6 | -1.3 | 3.8 | 8.7 | 15.8 | 14.6 | 9.0 | 4.0 | -4.7 | -5.9 |
| 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 | 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) | 4.8 | 6.2 | 7.5 | 8.6 | 12.0 | 10.4 | 11.2 | 9.8 | 7.6 | 7.4 | 7.4 | 4.8 |
| Precipitation (mm) | 139 | 57 | 112 | 138 | 35 | 100 | 152 | 99 | 180 | 130 | 88 | 250 |
| Sunny days | 12 | 16 | 13 | 15 | 19 | 7 | 6 | 8 | 12 | 17 | 18 | 15 |
| Rainy days | 17 | 9 | 16 | 15 | 12 | 23 | 25 | 23 | 18 | 14 | 11 | 14 |
| Snow days | 2 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The best time to visit Mahwah during the most sunny months:
The largest precipitation sum in Mahwah is at