❮
Today Hourly 7 days 30 days September
❯

September 2026 Weather | Fairfield, California

Tue 9/1
Cloudy Weather
Day 88°
Night 57°
Wed 9/2
Cloudy Weather
Day 88°
Night 57°
Thu 9/3
Cloudy Weather
Day 90°
Night 57°
Fri 9/4
Cloudy Weather
Day 84°
Night 59°
Sat 9/5
Sunny Weather
Day 84°
Night 59°
Sun 9/6
Cloudy Weather
Day 86°
Night 55°
Mon 9/7
Cloudy Weather
Day 90°
Night 61°
Tue 9/8
Cloudy Weather
Day 91°
Night 61°
Wed 9/9
Cloudy Weather
Day 91°
Night 61°
Thu 9/10
Cloudy Weather
Day 90°
Night 61°
Fri 9/11
Cloudy Weather
Day 91°
Night 61°
Sat 9/12
Cloudy Weather
Day 88°
Night 61°
Sun 9/13
Cloudy Weather
Day 84°
Night 59°
Mon 9/14
Cloudy Weather
Day 82°
Night 57°
Tue 9/15
Cloudy Weather
Day 84°
Night 57°
Wed 9/16
Sunny Weather
Day 88°
Night 61°
Thu 9/17
Sunny Weather
Day 90°
Night 63°
Fri 9/18
Cloudy Weather
Day 84°
Night 61°
Sat 9/19
Cloudy Weather
Day 82°
Night 61°
Sun 9/20
Cloudy Weather
Day 86°
Night 59°
Mon 9/21
Cloudy Weather
Day 88°
Night 61°
Tue 9/22
Cloudy Weather
Day 84°
Night 55°
Wed 9/23
Rainy Weather
Day 81°
Night 57°
Thu 9/24
Sunny Weather
Day 82°
Night 59°
Fri 9/25
Cloudy Weather
Day 82°
Night 55°
Sat 9/26
Cloudy Weather
Day 81°
Night 52°
Sun 9/27
Sunny Weather
Day 81°
Night 52°
Mon 9/28
Sunny Weather
Day 82°
Night 54°
Tue 9/29
Sunny Weather
Day 82°
Night 52°
Wed 9/30
Sunny Weather
Day 84°
Night 54°

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