Sumter in December
6.8out of 10
Possible, with caveats
Mild: highs around 15°C. Frequent rain: about 9 rainy days.
15°CAvg high
5°CAvg low
9Rainy days (93 mm)
9:45 hDaylight
07:25Sunrise · 17:10 Sunset
Why this score
- Mild: highs around 15°C
- Frequent rain: about 9 rainy days
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rainfall in December is fairly consistent from year to year (2.1 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 14°C | 3°C | 88 mm | 9 | – | – | 6.6 |
| February | 16°C | 5°C | 84 mm | 9 | – | – | 7.0 |
| March | 20°C | 8°C | 86 mm | 9 | – | – | 7.5 |
| April | 25°C | 13°C | 86 mm | 8 | – | – | 7.9 |
| May | 28°C | 17°C | 79 mm | 10 | – | – | 7.8 |
| June | 31°C | 22°C | 107 mm | 14 | – | – | 6.5 |
| July | 33°C | 23°C | 119 mm | 16 | – | – | 5.7 |
| August | 32°C | 23°C | 121 mm | 15 | – | – | 6.1 |
| September | 29°C | 20°C | 106 mm | 10 | – | – | 7.6 |
| October | 24°C | 13°C | 84 mm | 8 | – | – | 8.1 |
| November | 19°C | 8°C | 71 mm | 7 | – | – | 7.7 |
| December | 15°C | 5°C | 93 mm | 9 | – | – | 6.8 |
Frequently asked questions
How hot is Sumter in December?
Daytime highs average 15°C and nights about 5°C.
When is the best time to visit Sumter?
The best months are October, April, May, November.