Average annual temperature is 12.6 °C
Absolute maximum temperature: 33.9 °C
Absolute minimum temperature: -11.2 °C
Number of sunny days: 156 days
Number of rainy days: 200 days
Number of snow days: 9 days
Look at detailed online map of Borough of West Mifflin
* Weather data for Borough of West Mifflin 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) | 17.0 | 21.4 | 21.3 | 28.3 | 30.4 | 33.5 | 32.5 | 31.7 | 33.9 | 28.1 | 19.1 | 16.5 |
| Average daytime temperature (°C) | 7.9 | 11.2 | 10.8 | 19.1 | 22.3 | 26.2 | 28.7 | 27.5 | 24.6 | 18.6 | 11.7 | 9.2 |
| Average temperature (°C) | 3.7 | 4.6 | 5.1 | 12.1 | 15.7 | 20.0 | 23.2 | 21.9 | 19.1 | 13.7 | 6.3 | 5.1 |
| Average night temperature (°C) | 0.7 | -0.3 | 0.6 | 6.4 | 9.6 | 14.6 | 18.9 | 17.4 | 14.5 | 9.7 | 2.2 | 2.0 |
| Absolute minimum temperature (°C) | -6.2 | -11.2 | -7.3 | -1.2 | 2.4 | 10.2 | 15.1 | 12.3 | 9.4 | 1.7 | -6.4 | -4.5 |
| 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) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 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) | 2.9 | 6.8 | 6.1 | 8.6 | 10.4 | 10.8 | 11.0 | 10.7 | 8.7 | 6.2 | 6.7 | 4.0 |
| Precipitation (mm) | 116 | 72 | 99 | 58 | 81 | 141 | 117 | 93 | 45 | 100 | 41 | 65 |
| Sunny days | 7 | 14 | 12 | 17 | 21 | 11 | 5 | 9 | 13 | 14 | 21 | 12 |
| Rainy days | 20 | 13 | 17 | 13 | 10 | 19 | 26 | 22 | 17 | 17 | 8 | 18 |
| Snow days | 4 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Borough of West Mifflin during the most sunny months:
The largest precipitation sum in Borough of West Mifflin is at