Average annual temperature is 14.1 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -9.8 °C
Number of sunny days: 184 days
Number of rainy days: 179 days
Number of snow days: 2 days
Look at detailed online map of Swarthmore
* Weather data for Swarthmore 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) | 17.6 | 20.2 | 18.2 | 30.1 | 29.1 | 34.3 | 35.3 | 33.3 | 36.6 | 28.5 | 20.9 | 16.2 |
| Average daytime temperature (°C) | 9.6 | 10.2 | 11.9 | 20.5 | 22.7 | 27.4 | 31.6 | 30.0 | 26.2 | 21.0 | 12.7 | 10.0 |
| Average temperature (°C) | 5.6 | 5.2 | 6.3 | 14.2 | 16.5 | 21.2 | 25.7 | 24.4 | 21.0 | 15.3 | 7.4 | 5.8 |
| Average night temperature (°C) | 2.4 | 1.0 | 1.6 | 9.3 | 10.7 | 16.1 | 20.8 | 19.7 | 16.7 | 10.7 | 2.9 | 2.3 |
| Absolute minimum temperature (°C) | -3.1 | -9.8 | -4.1 | 0.9 | 4.9 | 11.6 | 17.7 | 15.7 | 11.9 | 4.7 | -4.5 | -3.4 |
| 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 | 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) | 4.6 | 6.9 | 7.4 | 9.1 | 11.3 | 10.5 | 11.4 | 10.1 | 8.0 | 8.1 | 7.6 | 4.7 |
| Precipitation (mm) | 105 | 54 | 89 | 169 | 42 | 86 | 131 | 75 | 179 | 58 | 73 | 165 |
| Sunny days | 13 | 17 | 13 | 16 | 20 | 12 | 9 | 12 | 14 | 19 | 22 | 17 |
| Rainy days | 18 | 9 | 18 | 14 | 11 | 18 | 22 | 19 | 16 | 12 | 8 | 14 |
| Snow days | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Swarthmore during the most sunny months:
The largest precipitation sum in Swarthmore is at