Grassy Key Rainfall Forecast

Today 8 May
5%
Sat 9 May
5%
Sun 10 May
5%
Mon 11 May
10%
Tue 12 May
15%
Wed 13 May
10%
Thu 14 May
5%

Grassy Key Rainfall Statistics

May Rainfall

The Florida Keys - Marathon International Airport (6.2 miles)

Total Rainfall 2026
8.8in
Daily Average 2026
0.1in
Wettest Day 16 March, 2026
2.1in
Wet Days 2026
37/128 (29%)
Total Rainfall April
1.5in
Daily Average April
0.1in
Wettest Day 26 April, 2026
0.6in
Wet Days April
12/30 (40%)
Total Rainfall May
2.9in
Daily Average May
0.6in
Wettest Day 4 May, 2026
1.3in
Wet Days May
4/8 (50%)

Climate (2010–Present)

The Florida Keys - Marathon International Airport (6.2 miles)

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Annual Average 2021–2025
40.6in
Monthly Average 2021–2026
3.4in
Daily Average 2021–2026
0.1in
Wettest Day 20 May, 2024
7.1in

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