Johnston Rainfall Forecast

Today 12 Jun
10%
Sat 13 Jun
25%
Sun 14 Jun
40%
Mon 15 Jun
35%
Tue 16 Jun
65%
Wed 17 Jun
45%
Thu 18 Jun
40%

Johnston Rainfall Statistics

June Rainfall

Aiken Municipal Airport (14.3 miles)

Total Rainfall 2026
32in
Daily Average 2026
0.2in
Wettest Day 22 May, 2026
4in
Wet Days 2026
37/163 (23%)
Total Rainfall May
14.7in
Daily Average May
0.5in
Wettest Day 22 May, 2026
4in
Wet Days May
12/31 (39%)
Total Rainfall June
2.2in
Daily Average June
0.2in
Wettest Day 1 June, 2026
1.4in
Wet Days June
3/12 (25%)

Climate (2010–Present)

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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