Rockville, SC
Climate overview — based on NOAA 1991-2020 normals from EDISTO IS MIDDLETON PLANTATION, SC US.
Year-round temperatures (°F)
Climate summary
Rockville has an annual average temperature of 66.7°F with about 51.9 inches of precipitation per year. The warmest month is July (average high 90.3°F), and the coldest is January (average low 40.0°F). August is typically the wettest month (7.46 in) and November the driest (2.61 in).
Best time to visit Rockville
Full guide →Climate change signal
All-time records →119 of 366 (32.5%) of Rockville's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 2000s | 84 | |
| 2010s | 271 | |
| 2020s | 11 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 59.2°F | 40.0°F | 49.6°F | 3.58 in | — | 8 |
| February | 62.9°F | 42.5°F | 52.7°F | 2.89 in | — | 8 |
| March | 68.8°F | 48.3°F | 58.6°F | 3.88 in | — | 8 |
| April | 76.1°F | 55.9°F | 66.0°F | 3.55 in | — | 7 |
| May | 82.9°F | 64.3°F | 73.6°F | 2.79 in | — | 7 |
| June | 88.0°F | 71.0°F | 79.5°F | 5.21 in | — | 10 |
| July | 90.3°F | 74.2°F | 82.3°F | 6.55 in | — | 11 |
| August | 89.6°F | 73.6°F | 81.6°F | 7.46 in | — | 13 |
| September | 85.3°F | 69.1°F | 77.2°F | 5.19 in | — | 9 |
| October | 77.6°F | 59.6°F | 68.6°F | 4.34 in | — | 7 |
| November | 67.8°F | 48.7°F | 58.3°F | 2.61 in | — | 7 |
| December | 61.3°F | 42.9°F | 52.1°F | 3.85 in | — | 10 |
Climate twins of Rockville
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).