The temperatures in Chico in September are comfortable with low of 57°F and and high up to 91°F.
There is little to no rain in Chico during September, so it’s a lot easier to explore the city. Just remember to dress in warm layers, as it can still get pretty chilly.
Our weather forecast can give you a great sense of what weather to expect in Chico in September 2025.
If you’re planning to visit Chico in the near future, we highly recommend that you review the 14 day weather forecast for Chico before you arrive.
Temperatures
91° / 57°
Rainy Days
0
Snowy Days
0
Dry Days
30
Rainfall
0.55
in
Sun Hours
11.9
Hrs
