Johns Island Rainfall Forecast

Today 14 Mar
No Rain
Sun 15 Mar
65%
Mon 16 Mar
90%
Tue 17 Mar
20%
Wed 18 Mar
No Rain
Thu 19 Mar
No Rain
Fri 20 Mar
5%

Johns Island Rainfall Statistics

March Rainfall

Charleston Executive Airport (1.2 miles)

Total Rainfall 2026
3.4in
Daily Average 2026
0.05in
Wettest Day 18 January, 2026
0.8in
Wet Days 2026
15/73 (21%)
Total Rainfall February
1.9in
Daily Average February
0.1in
Wettest Day 15 February, 2026
0.7in
Wet Days February
8/28 (29%)
Total Rainfall March
0.2in
Daily Average March
0.01in
Wettest Day 8 March, 2026
0.1in
Wet Days March
2/14 (14%)

Climate (2010–Present)

Charleston Executive Airport (1.2 miles)

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Annual Average 2021–2025
27.5in
Monthly Average 2021–2026
2.2in
Daily Average 2021–2026
0.1in
Wettest Day 23 August, 2025
6.6in

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