Weather & Climate
Marion County, South Carolina, United States
Overview
Available climate summaries for Marion County. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
17.7°C
Summer Avg
26.9°C
Winter Avg
8.1°C
Record High
41.1°C
Record Low
-11.7°C
Annual Precipitation
1261.9 mm
Avg Humidity
78%
Summer Humidity
76%
Winter Humidity
81%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 26.2° | 6.8° | -11.7° | 62 | 81% | 85 | 47.7 |
| Feb | 26.8° | 8.6° | -8.1° | 85.1 | 81% | 95 | 47.8 |
| Mar | 29° | 12.5° | -6.3° | 85.6 | 79% | 138 | 52.1 |
| Apr | 35.3° | 17.5° | -2° | 80.7 | 75% | 170 | 49.6 |
| May | 38.7° | 22.3° | 5.9° | 103.5 | 73% | 189 | 41.5 |
| Jun | 40.8° | 26.3° | 12.2° | 129.9 | 74% | 192 | 41.8 |
| Jul | 39.8° | 27.6° | 15.8° | 144.8 | 75% | 192 | 35.7 |
| Aug | 41.1° | 26.8° | 13.4° | 157.2 | 78% | 172 | 50.3 |
| Sep | 36° | 23.9° | 9.2° | 134.1 | 78% | 143 | 61.3 |
| Oct | 37.1° | 18.5° | 0.3° | 100.1 | 78% | 120 | 64.2 |
| Nov | 28.3° | 12.5° | -6.2° | 83.1 | 78% | 90 | 42.2 |
| Dec | 26.4° | 9° | -9.1° | 95.8 | 82% | 75 | 48.5 |
Data sources
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-22.