Brentwood Rainfall Forecast

Today 25 Apr
65%
Sun 26 Apr
20%
Mon 27 Apr
5%
Tue 28 Apr
No Rain
Wed 29 Apr
15%
Thu 30 Apr
10%
Fri 1 May
No Rain

Brentwood Rainfall Statistics

April Rainfall

Ontario International Airport (8.1 miles)

Total Rainfall 2026
4.8in
Daily Average 2026
0.04in
Wettest Day 1 January, 2026
0.9in
Wet Days 2026
13/115 (11%)
Total Rainfall March
0.3in
Daily Average March
0.01in
Wettest Day 31 March, 2026
0.3in
Wet Days March
1/31 (3%)
Total Rainfall April
0.6in
Daily Average April
0.03in
Wettest Day 12 April, 2026
0.3in
Wet Days April
3/25 (12%)

Climate (2010–Present)

Ontario International Airport (8.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

Annual Average 2021–2025
13.5in
Monthly Average 2021–2026
1.1in
Daily Average 2021–2026
0.04in
Wettest Day 5 February, 2024
3.6in

Get WillyWeather+ to remove ads