Ontario Rainfall Forecast

Today 14 Aug
10%
Fri 15 Aug
No Rain
Sat 16 Aug
10%
Sun 17 Aug
50%
Mon 18 Aug
20%
Tue 19 Aug
30%
Wed 20 Aug
30%

Ontario Rainfall Statistics

August Rainfall

Rochester, Greater Rochester International Airport (21.1 miles)

Total Rainfall 2025
22.2in
Daily Average 2025
0.1in
Wettest Day 18 June, 2025
3.1in
Wet Days 2025
108/226 (48%)
Total Rainfall July
1.9in
Daily Average July
0.1in
Wettest Day 16 July, 2025
0.8in
Wet Days July
8/31 (26%)
Total Rainfall August
0.1in
Daily Average August
0.01in
Wettest Day 6 August, 2025
0.1in
Wet Days August
1/14 (7%)

Climate (2010–Present)

Rochester, Greater Rochester International Airport (21.1 miles)

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Annual Average 2020–2024
36.8in
Monthly Average 2020–2025
3.1in
Daily Average 2020–2025
0.1in
Wettest Day 25 December, 2022
5.9in

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