Fontana, California Weather
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Weather Forecast for Fontana, California : San Bernardino County
Issued: 1:03 pm PDT Jun 20, 2025 Latitude: 34.0922335 Longitude: -117.435048 View on Google Maps

MouseOver for Detail Forecast
Tonight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Increasing Clouds on Tonight Partly Sunny on Saturday Sunny on Sunday Sunny on Monday Sunny on Tuesday Sunny on Wednesday Sunny on Thursday Sunny on Friday
Low: 58°F High: 78°F High: 83°F High: 83°F High: 82°F High: 88°F High: 91°F High: 92°F
Low: 57°F Low: 56°F Low: 55°F Low: 57°F Low: 61°F Low: 63°F  
Increasing Clouds Partly Sunny Sunny Sunny Sunny Sunny Sunny Sunny
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Current Conditions at
ONTARIO - (KONT)
66°
Clear
as of 8:53 PM PDST
Rel. Humidity: 72%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
12 MPH
250° West
Cloud Level(s): Clear
Current Conditions at
RIVERSIDE - (KRAL)
66°
Clear
as of 8:53 PM PDST
Rel. Humidity: 68%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
9 MPH
280° West
Cloud Level(s): Clear
Current Conditions at
CHINO - (KCNO)
64°
Clear
as of 8:53 PM PDST
Rel. Humidity: 77%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 29.83 in.
Flight Rule: VFR
Wind Data
10 MPH
250° West
Cloud Level(s): Clear
Current Conditions at
MARCH AFB - (KRIV)
68°
Clear
as of 8:55 PM PDST
Rel. Humidity: 64%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Increasing Clouds on Tonight Tonight... Increasing clouds, with a low around 58. West wind 5 to 10 mph becoming southeast after midnight.
Partly Sunny on Saturday Saturday... Partly sunny, then gradually becoming sunny, with a high near 78. Southeast wind 5 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 25 mph.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 57. Southwest wind 10 to 15 mph becoming light in the evening. Winds could gust as high as 25 mph.
Sunny on Sunday Sunday... Sunny, with a high near 83. Light northwest wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 56. Southwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 20 mph.
Sunny on Monday Monday... Sunny, with a high near 83.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 55.
Sunny on Tuesday Tuesday... Sunny, with a high near 82.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 57.
Sunny on Wednesday Wednesday... Sunny, with a high near 88.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 61.
Sunny on Thursday Thursday... Sunny, with a high near 91.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 63.
Sunny on Friday Friday... Sunny, with a high near 92.
Current Radar Image


Sun Almanac for Fontana, California
Sunrise: 05:39 AM
Sunset: 8:05 PM
Civil Sunrise:05:10 AM
Civil Sunset: 8:34 PM
Nautical Sunrise: 04:34 AM
Nautical Sunset: 9:10 PM
Astro Sunrise: 03:54 AM
Astro Sunset: 9:49 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.