❮
Today Hourly 7 days 30 days September
❯

September 2026 Weather | Irvine, California

Today 9/14
Cloudy Weather
Day 82°
Night 66°
25
Tue 9/15
Cloudy Weather
Day 82°
Night 66°
0
Wed 9/16
Cloudy Weather
Day 81°
Night 66°
0
Thu 9/17
Cloudy Weather
Day 79°
Night 64°
0
Fri 9/18
Cloudy Weather
Day 82°
Night 64°
1
Sat 9/19
Cloudy Weather
Day 79°
Night 66°
1
Sun 9/20
Cloudy Weather
Day 79°
Night 70°
1
Mon 9/21
Cloudy Weather
Day 77°
Night 66°
1
Tue 9/22
Cloudy Weather
Day 79°
Night 68°
2
Wed 9/23
Cloudy Weather
Day 77°
Night 66°
55
Thu 9/24
Cloudy Weather
Day 81°
Night 66°
1
Fri 9/25
Sunny Weather
Day 82°
Night 64°
0
Sat 9/26
Sunny Weather
Day 84°
Night 68°
0
Sun 9/27
Sunny Weather
Day 81°
Night 64°
20
Mon 9/28
Sunny Weather
Day 77°
Night 61°
5
Tue 9/29
Cloudy Weather
Day 75°
Night 61°
Wed 9/30
Cloudy Weather
Day 75°
Night 63°

Explore U.S. Weather Trends

❄️ Coldest Cities in the U.S. – Live Temperature Rankings 🔥 Hottest Cities Today – Real-Time Heat Observations ⚠️ Active Weather Alerts – Warnings, Watches & Advisories 🌪️ Windiest Cities – Highest Sustained Wind Speeds 🌫️ Worst Air Quality – Cities with the Highest AQI 🍃 Best Air Quality – Cities with the Lowest AQI