La Cuesta Fontana, California Weather
your sport, your way
Air Sports Net on FacebookAir Sports Net on Google +Air Sports Net on TwitterReceive RSS UpdatesReceive Email Updates

No Watches or Warnings for La Cuesta Fontana
Change location by the zip code or city,state: or search for other weather forecast locations in California by name.
Weather Forecast for La Cuesta Fontana, California : San Bernardino County
Issued: 1:00 pm PDT Sep 15, 2025 Latitude: 34.1416764 Longitude: -117.4503265 View on Google Maps

MouseOver for Detail Forecast
Overnight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Mostly Clear on Overnight Sunny on Tuesday Mostly Sunny on Wednesday 60% chance of thunderstorms on Thursday 10% chance of thunderstorms on Friday Sunny on Saturday Sunny on Sunday Sunny on Monday
Low: 68°F High: 96°F High: 93°F High: 86°F High: 87°F High: 89°F High: 90°F High: 92°F
Low: 69°F Low: 67°F Low: 66°F Low: 66°F Low: 66°F Low: 67°F  
Mostly Clear Sunny Mostly Sunny Thunderstorms Thunderstorms Sunny Sunny Sunny
-
Current Conditions at
ONTARIO - (KONT)
75°
Clear
as of 11:53 PM PDST
Rel. Humidity: 64%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
RIVERSIDE - (KRAL)
73°
Clear
as of 11:53 PM PDST
Rel. Humidity: 56%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 29.91 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CHINO - (KCNO)
70°
Clear
as of 11:53 PM PDST
Rel. Humidity: 77%
Dew Point: 63°F
Visibility: 7 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MARCH AFB - (KRIV)
70°
Clear
as of 11:55 PM PDST
Rel. Humidity: 52%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 68. North wind around 5 mph becoming calm.
Sunny on Tuesday Tuesday... Sunny, with a high near 96. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 69. Southwest wind 5 to 10 mph becoming light and variable in the evening. Winds could gust as high as 20 mph.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 93. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
30% chance of thunderstorms Wednesday Night Wednesday Night... A chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 67. Southwest wind 5 to 10 mph becoming light and variable after midnight. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
60% chance of thunderstorms Thursday Thursday... Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.
20% chance of thunderstorms Thursday Night Thursday Night... A slight chance of showers and thunderstorms. Partly cloudy, with a low around 66. Chance of precipitation is 20%.
10% chance of thunderstorms Friday Friday... A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 66.
Sunny on Saturday Saturday... Sunny, with a high near 89.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 66.
Sunny on Sunday Sunday... Sunny, with a high near 90.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 67.
Sunny on Monday Monday... Sunny, with a high near 92.
Current Radar Image


Sun Almanac for La Cuesta Fontana, California
Sunrise: 06:34 AM
Sunset: 6:55 PM
Civil Sunrise:06:09 AM
Civil Sunset: 7:20 PM
Nautical Sunrise: 05:40 AM
Nautical Sunset: 7:49 PM
Astro Sunrise: 05:10 AM
Astro Sunset: 8:19 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.