Average annual temperature is 13.1 °C
Absolute maximum temperature: 35.8 °C
Absolute minimum temperature: -15.3 °C
Number of sunny days: 169 days
Number of rainy days: 192 days
Number of snow days: 4 days
Look at detailed online map of Iselin
* Weather data for Iselin 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) | 18.8 | 19.3 | 16.4 | 32.0 | 31.3 | 32.7 | 34.7 | 31.7 | 35.8 | 28.3 | 20.1 | 16.5 |
| Average daytime temperature (°C) | 9.0 | 8.7 | 10.7 | 18.9 | 22.4 | 26.4 | 30.3 | 28.1 | 25.0 | 19.8 | 11.6 | 9.2 |
| Average temperature (°C) | 4.9 | 3.6 | 5.3 | 12.8 | 16.1 | 20.3 | 24.6 | 22.9 | 19.8 | 14.5 | 6.4 | 5.0 |
| Average night temperature (°C) | 1.4 | -0.9 | 0.7 | 7.8 | 9.9 | 15.2 | 19.8 | 18.7 | 15.8 | 10.3 | 2.2 | 1.6 |
| Absolute minimum temperature (°C) | -4.1 | -15.3 | -4.2 | 0.6 | 4.1 | 9.8 | 15.9 | 15.3 | 9.6 | 5.8 | -4.6 | -5.1 |
| 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 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 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) | 4.5 | 6.7 | 7.4 | 8.5 | 11.7 | 9.7 | 11.4 | 10.0 | 7.7 | 7.6 | 7.5 | 5.0 |
| Precipitation (mm) | 119 | 53 | 107 | 123 | 38 | 109 | 201 | 103 | 202 | 101 | 68 | 213 |
| Sunny days | 13 | 18 | 12 | 15 | 20 | 11 | 7 | 12 | 11 | 16 | 18 | 16 |
| Rainy days | 18 | 8 | 18 | 15 | 11 | 19 | 24 | 19 | 19 | 15 | 12 | 14 |
| Snow days | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Iselin during the most sunny months:
The largest precipitation sum in Iselin is at