Average annual temperature is 20.5 °C
Absolute maximum temperature: 38.7 °C
Absolute minimum temperature: -1.0 °C
Number of sunny days: 172 days
Number of rainy days: 193 days
Look at detailed online map of Old Rock Hill
* Weather data for Old Rock Hill 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) | 25.2 | 29.1 | 29.9 | 32.0 | 34.5 | 36.1 | 38.6 | 38.7 | 32.6 | 30.2 | 27.5 | 24.9 |
| Average daytime temperature (°C) | 19.6 | 23.1 | 24.4 | 27.6 | 28.8 | 31.5 | 34.7 | 35.6 | 30.0 | 25.7 | 20.5 | 17.0 |
| Average temperature (°C) | 13.4 | 16.6 | 17.8 | 20.8 | 22.7 | 25.5 | 28.5 | 29.2 | 24.6 | 19.9 | 15.1 | 12.0 |
| Average night temperature (°C) | 8.6 | 11.9 | 12.7 | 15.1 | 17.6 | 21.0 | 23.8 | 24.3 | 20.2 | 15.0 | 10.9 | 8.1 |
| Absolute minimum temperature (°C) | -1.0 | 1.3 | 0.9 | 9.0 | 11.3 | 17.7 | 21.4 | 22.3 | 16.0 | 8.4 | 1.1 | 0.1 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.4 | 11.1 | 12.0 | 12.9 | 13.7 | 14.1 | 13.9 | 13.3 | 12.4 | 11.4 | 10.6 | 10.2 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 7.3 | 8.4 | 8.9 | 9.5 | 10.6 | 10.4 | 11.2 | 10.9 | 9.6 | 9.1 | 6.7 | 6.6 |
| Precipitation (mm) | 107 | 106 | 78 | 78 | 93 | 211 | 108 | 209 | 62 | 20 | 63 | 193 |
| Sunny days | 20 | 18 | 14 | 10 | 12 | 5 | 3 | 8 | 14 | 26 | 20 | 22 |
| Rainy days | 11 | 10 | 17 | 20 | 19 | 25 | 28 | 23 | 16 | 5 | 10 | 9 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Old Rock Hill is at