Johnston Rainfall Forecast

Today 11 Aug
20%
Wed 12 Aug
20%
Thu 13 Aug
5%
Fri 14 Aug
15%
Sat 15 Aug
30%
Sun 16 Aug
30%
Mon 17 Aug
15%

Johnston Rainfall Statistics

August Rainfall

Aiken Municipal Airport (14.3 miles)

Total Rainfall 2026
42.5in
Daily Average 2026
0.2in
Wettest Day 22 May, 2026
4in
Wet Days 2026
57/223 (26%)
Total Rainfall July
2.8in
Daily Average July
0.1in
Wettest Day 13 July, 2026
1.3in
Wet Days July
8/31 (26%)
Total Rainfall August
3.4in
Daily Average August
0.4in
Wettest Day 6 August, 2026
1.8in
Wet Days August
4/11 (36%)

Climate (2021–2025)

Aiken Municipal Airport (14.3 miles)

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Annual Average 2021–2025
67.1in
Monthly Average 2021–2026
6.1in
Daily Average 2021–2026
0.2in
Wettest Day 6 November, 2024
6.8in

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