Smithtown Rainfall Forecast

Today 11 May
60%
Tue 12 May
No Rain
Wed 13 May
40%
Thu 14 May
95%
Fri 15 May
30%
Sat 16 May
10%
Sun 17 May
15%

Smithtown Rainfall Statistics

May Rainfall

Islip, Long Island Mac Arthur Airport (6.2 miles)

Total Rainfall 2026
12.7in
Daily Average 2026
0.1in
Wettest Day 23 February, 2026
2in
Wet Days 2026
50/131 (38%)
Total Rainfall April
2.1in
Daily Average April
0.1in
Wettest Day 25 April, 2026
1.1in
Wet Days April
10/30 (33%)
Total Rainfall May
0.6in
Daily Average May
0.1in
Wettest Day 9 May, 2026
0.3in
Wet Days May
4/11 (36%)

Climate (2010–Present)

Islip, Long Island Mac Arthur Airport (6.2 miles)

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Annual Average 2021–2025
44.1in
Monthly Average 2021–2026
3.6in
Daily Average 2021–2026
0.1in
Wettest Day 16 July, 2023
4.6in

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