StadiumForecast.com - Your Weather Expert for Sports
   Football
   Baseball
Golf
  Soccer
Racing
 

Auto Club Speedway Weather



Weather Forecast for Fontana

Now
Current Weather Conditions
82° F

Wind: 2.77 mph
Humidity: 28%
Clouds: 1%
Pressure: 1017 hPa
Sunrise: 9:56 AM ET
Sunset: 9:59 PM ET
Tomorrow
Tomorrow's Weather Conditions
Sunny

Clear
Sat
Sat's Weather Conditions
Sunny

Clear


Extended Forecast
 
National Weather Service Forecast for: Fontana CA
Issued by: National Weather Service San Diego, CA
Updated: 7:42 pm PDT Mar 18, 2026
 
Tonight

Tonight: Clear, with a low around 69. Southwest wind around 5 mph becoming calm  in the evening.
Low: 69 °F
Thursday

Thursday: Sunny, with a high near 101. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
High: 101 °F
Thursday
Night
Thursday Night: Clear, with a low around 71. West wind 5 to 10 mph becoming light and variable  in the evening. Winds could gust as high as 20 mph.
Low: 71 °F
Friday

Friday: Sunny, with a high near 101. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
High: 101 °F
Friday
Night
Friday Night: Clear, with a low around 67. West wind 10 to 15 mph becoming light  in the evening. Winds could gust as high as 25 mph.
Low: 67 °F
Saturday

Saturday: Sunny, with a high near 92.
High: 92 °F
Saturday
Night
Saturday Night: Partly cloudy, with a low around 63.
Low: 63 °F
Sunday

Sunday: Sunny, with a high near 91.
High: 91 °F
Sunday
Night
Sunday Night: Clear, with a low around 63.
Low: 63 °F
Clear
Sunny
Clear
Sunny
Clear
Sunny
Partly Cloudy
Sunny
Clear

Heat Advisory


Tonight
 
Clear, with a low around 69. Southwest wind around 5 mph becoming calm in the evening.
Thursday
 
Sunny, with a high near 101. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Thursday Night
 
Clear, with a low around 71. West wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Friday
 
Sunny, with a high near 101. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
 
Clear, with a low around 67. West wind 10 to 15 mph becoming light in the evening. Winds could gust as high as 25 mph.
Saturday
 
Sunny, with a high near 92.
Saturday Night
 
Partly cloudy, with a low around 63.
Sunday
 
Sunny, with a high near 91.
Sunday Night
 
Clear, with a low around 63.
Monday
 
Sunny, with a high near 92.
Monday Night
 
Mostly clear, with a low around 64.
Tuesday
 
Sunny, with a high near 93.
Tuesday Night
 
Clear, with a low around 63.
Wednesday
 
Sunny, with a high near 91.

Forecast from NOAA-NWS for Fontana.



 


Football  |  Baseball  |  Golf  |  Soccer  |  Racing  |  Radar  |  Stadiums

Copyright © 2009-, StadiumForecast.com a Division of FFWV