Historic Fontana Theater

Weather · September

Fontana weather in September

Average highs of 91°F, lows of 62°F and 0.10 in of rain, from 30 years of weather records.

September is Fontana’s 3rd warmest month, with average highs of 91°F and lows of 62°F. That is 4° cooler than August, and 12° above the yearly average high.

Average high
91°F
Average low
62°F
Precipitation
0.10 in
Wet days
1
Sunrise · sunset
6:32 AM · 6:57 PM

September across the year

  1. 68°44°Jan
  2. 68°45°Feb
  3. 72°47°Mar
  4. 76°50°Apr
  5. 80°55°May
  6. 87°59°Jun
  7. 93°64°Jul
  8. 95°65°Aug
  9. 91°62°Sep
  10. 83°55°Oct
  11. 75°47°Nov
  12. 67°43°Dec

High and low Rain

What to wear in September

  • Hot days: light, breathable clothes, a sun hat, sunscreen and plenty of water for anything outdoors.

September is good for

What’s on in Fontana in September

See all upcoming events and school days off.

Around Fontana

Once a Rabbit Experimental Station, Now a Senior Center, Fontana
Once a Rabbit Experimental Station, Now a Senior CenterJohnwayne Stroud · CC BY-SA 3.0
Fontana, California City Hall
Fontana, California City HallJordan W. · CC BY-SA 3.0
California Landmark No. 950 Site of U.S. Rabbit Experimental Station, Fontana
California Landmark No. 950 Site of U.S. Rabbit Experimental StationJohnwayne Stroud · CC BY-SA 3.0

See Fontana

A look around town before you go.

Drive through northern Fontana video thumbnail

A DRIVE AROUND TOWN

Drive through northern Fontana

A recorded drive explores northern Fontana from the road. Check present-day conditions before planning your own journey.

Watch on YouTube ↗

September compared with the months around it

MonthHighLowRain
August95°F65°F0.00 in
September91°F62°F0.10 in
October83°F55°F0.30 in

Planning a trip? See the best time to visit Fontana and today’s forecast.

Questions

How hot does it get in Fontana in September?

Average highs are 91°F and average lows 62°F, for a daily mean of 77°F. Individual days run hotter or colder than these 30-year averages.

Does it rain in Fontana in September?

September averages 0.10 in of precipitation over about 1 days with at least 0.01 in. It is the 10th wettest month of the year.

What time is sunset in Fontana in September?

Around mid-September the sun rises about 6:32 AM and sets about 6:57 PM, for roughly 12.4 hours of daylight.

Is September a good time to visit Fontana?

The mildest months for visiting are April, May, October. September is hot, with Halloween events.

NOAA U.S. Climate Normals 1991–2020, Riverside Muni Ap station (9.7 mi from downtown). Sunrise and sunset are calculated for September 15 at the city’s coordinates.

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