0.4in

Rain Today

Rain Last Hour
0in

Recorded at Islip, Long Island Mac Arthur Airport Updated 22 mins ago (9.3 miles away)

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Real-Time Extremes

Hottest 102.1 °F
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Coldest 39.1 °F
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Windiest 26.4mph
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Wettest (Last Hour) 2.1in
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Most Humid 100%
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Least Humid 8%
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Highest Pressure 1042.7 hPa
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Lowest Pressure 997 hPa
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Stony Brook Rainfall Forecast

Today 7 Sep
90%
Mon 8 Sep
10%
Tue 9 Sep
No Rain
Wed 10 Sep
20%
Thu 11 Sep
10%
Fri 12 Sep
5%
Sat 13 Sep
5%

Stony Brook Rainfall Statistics

September Rainfall

Islip, Long Island Mac Arthur Airport (8.7 miles)

Total Rainfall 2025
24.1in
Daily Average 2025
0.1in
Wettest Day 31 July, 2025
2.9in
Wet Days 2025
83/250 (33%)
Total Rainfall August
0.5in
Daily Average August
0.02in
Wettest Day 20 August, 2025
0.3in
Wet Days August
5/31 (16%)
Total Rainfall September
0.3in
Daily Average September
0.1in
Wettest Day 5 September, 2025
0.3in
Wet Days September
1/7 (14%)

Climate (2010–Present)

Islip, Long Island Mac Arthur Airport (8.7 miles)

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Annual Average 2020–2024
45.6in
Monthly Average 2020–2025
3.8in
Daily Average 2020–2025
0.1in
Wettest Day 16 July, 2023
4.6in

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