Charleston Rainfall Forecast

Today 13 Sep
25%
Mon 14 Sep
No Rain
Tue 15 Sep
No Rain
Wed 16 Sep
No Rain
Thu 17 Sep
No Rain
Fri 18 Sep
No Rain
Sat 19 Sep
No Rain

Charleston Rainfall Statistics

September Rainfall

Southwest Oregon Regional Airport (6.8 miles)

Total Rainfall 2026
17.9in
Daily Average 2026
0.1in
Wettest Day 23 February, 2026
3.5in
Wet Days 2026
45/256 (18%)
Total Rainfall August
0.05in
Daily Average August
0in
Wettest Day 14 August, 2026
0.04in
Wet Days August
2/31 (6%)
Total Rainfall September
1.6in
Daily Average September
0.2in
Wettest Day 3 September, 2026
0.9in
Wet Days September
3/13 (23%)

Climate (2021–2025)

Southwest Oregon Regional Airport (6.8 miles)

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Annual Average 2021–2025
49.2in
Monthly Average 2021–2026
3.9in
Daily Average 2021–2026
0.1in
Wettest Day 23 February, 2026
3.5in

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