Saint Johns River - Great Marsh Island Rainfall Forecast

Today 18 Jul
40%
Sat 19 Jul
15%
Sun 20 Jul
10%
Mon 21 Jul
45%
Tue 22 Jul
70%
Wed 23 Jul
75%
Thu 24 Jul
60%

Saint Johns River - Great Marsh Island Rainfall Statistics

July Rainfall

Mayport Naval Station - Adm David L. McDonald Field (2.5 miles)

Total Rainfall 2025
26.8in
Daily Average 2025
0.1in
Wettest Day 19 January, 2025
3.5in
Wet Days 2025
55/199 (28%)
Total Rainfall June
3.3in
Daily Average June
0.1in
Wettest Day 15 June, 2025
0.7in
Wet Days June
10/30 (33%)
Total Rainfall July
1.5in
Daily Average July
0.1in
Wettest Day 14 July, 2025
0.6in
Wet Days July
8/18 (44%)

Climate (2010–Present)

Mayport Naval Station - Adm David L. McDonald Field (2.5 miles)

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Annual Average 2020–2024
47.1in
Monthly Average 2020–2025
4in
Daily Average 2020–2025
0.1in
Wettest Day 9 September, 2024
4.9in

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