Hanahan, SC
Climate overview — based on NOAA 1991-2020 normals from CHARLESTON INTL AP, SC US.
Year-round temperatures (°F)
Climate summary
Hanahan has an annual average temperature of 66.5°F with about 52.5 inches of precipitation per year and 0.3 inches of snow. The warmest month is July (average high 91.3°F), and the coldest is January (average low 38.9°F). August is typically the wettest month (6.97 in) and November the driest (2.66 in). Snow typically falls from January through January.
Best time to visit Hanahan
Full guide →Climate change signal
All-time records →44 of 366 (12%) of Hanahan'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.
| 1930s | 13 | |
| 1940s | 49 | |
| 1950s | 53 | |
| 1960s | 32 | |
| 1970s | 38 | |
| 1980s | 55 | |
| 1990s | 37 | |
| 2000s | 25 | |
| 2010s | 45 | |
| 2020s | 19 |
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 | 60.2°F | 38.9°F | 49.5°F | 3.37 in | 0.2 in | 9 |
| February | 63.8°F | 41.6°F | 52.7°F | 3.05 in | 0.1 in | 9 |
| March | 70.1°F | 47.3°F | 58.7°F | 3.35 in | — | 8 |
| April | 77.1°F | 54.5°F | 65.8°F | 3.29 in | — | 8 |
| May | 83.6°F | 63.0°F | 73.3°F | 3.32 in | — | 8 |
| June | 88.5°F | 70.4°F | 79.4°F | 6.21 in | — | 12 |
| July | 91.3°F | 73.7°F | 82.5°F | 6.60 in | — | 13 |
| August | 89.8°F | 73.1°F | 81.4°F | 6.97 in | — | 13 |
| September | 85.4°F | 68.3°F | 76.9°F | 6.01 in | — | 10 |
| October | 77.9°F | 57.7°F | 67.8°F | 4.33 in | — | 7 |
| November | 69.4°F | 47.1°F | 58.3°F | 2.66 in | — | 7 |
| December | 62.7°F | 41.6°F | 52.2°F | 3.35 in | — | 9 |
Climate twins of Hanahan
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).