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Today Hourly 7 days 30 days September
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September 2025 Weather | Ontario, California

Today 9/13
Cloudy Weather
Day 84°
Night 61°
1
Sun 9/14
Sunny Weather
Day 90°
Night 61°
0
Mon 9/15
Sunny Weather
Day 93°
Night 64°
0
Tue 9/16
Sunny Weather
Day 95°
Night 70°
0
Wed 9/17
Cloudy Weather
Day 93°
Night 66°
4
Thu 9/18
Cloudy Weather
Day 86°
Night 66°
10
Fri 9/19
Cloudy Weather
Day 88°
Night 66°
25
Sat 9/20
Cloudy Weather
Day 90°
Night 64°
5
Sun 9/21
Cloudy Weather
Day 90°
Night 63°
4
Mon 9/22
Sunny Weather
Day 84°
Night 63°
0
Tue 9/23
Sunny Weather
Day 88°
Night 61°
0
Wed 9/24
Sunny Weather
Day 86°
Night 61°
0
Thu 9/25
Sunny Weather
Day 88°
Night 61°
0
Fri 9/26
Sunny Weather
Day 86°
Night 59°
5
Sat 9/27
Sunny Weather
Day 82°
Night 61°
5
Sun 9/28
Sunny Weather
Day 82°
Night 59°
5
Mon 9/29
Sunny Weather
Day 82°
Night 61°
5
Tue 9/30
Sunny Weather
Day 81°
Night 61°
5