Ontario, California Weather
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Weather Forecast for Ontario, California : San Bernardino County
Issued: 8:20 pm PDT May 12, 2025 Latitude: 34.0633443 Longitude: -117.6508876 View on Google Maps

MouseOver for Detail Forecast
Tonight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Increasing Clouds on Tonight Partly Sunny on Tuesday Sunny on Wednesday Sunny on Thursday Morning Fog on Friday Mostly Sunny on Saturday Partly Sunny on Sunday Mostly Sunny on Monday
Low: 52°F High: 67°F High: 74°F High: 75°F High: 73°F High: 67°F High: 66°F High: 74°F
Low: 52°F Low: 53°F Low: 54°F Low: 55°F Low: 54°F Low: 53°F  
Increasing Clouds Partly Sunny Sunny Sunny Morning Fog Mostly Sunny Partly Sunny Mostly Sunny
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Current Conditions at
ONTARIO - (KONT)
61°
Mostly Cloudy
as of 8:53 PM PDST
Rel. Humidity: 63%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
12 MPH
240° Southwest
Cloud Level(s): Few at 3100ft, Broken at 25000ft
Current Conditions at
CHINO - (KCNO)
61°
Clear
as of 8:53 PM PDST
Rel. Humidity: 72%
Dew Point: 52°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
12 MPH
250° West
Cloud Level(s): Clear
Current Conditions at
RIVERSIDE - (KRAL)
61°
Clear
as of 8:53 PM PDST
Rel. Humidity: 63%
Dew Point: 48°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
14 MPH
Gust: 24 MPH
270° West
Cloud Level(s): Clear
Current Conditions at
FULLERTON - (KFUL)
63°
Clear
as of 8:53 PM PDST
Rel. Humidity: 33%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 29.92 in.
Flight Rule: VFR
Wind Data
6 MPH
200° South
Cloud Level(s): Clear
Increasing Clouds on Tonight Tonight... Patchy drizzle after 11pm. Increasing clouds, with a low around 52. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Partly Sunny on Tuesday Tuesday... Patchy drizzle before 11am. Partly sunny, with a high near 67. South wind 5 to 15 mph, with gusts as high as 25 mph.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 52. West wind 10 to 15 mph becoming light after midnight. Winds could gust as high as 20 mph.
Sunny on Wednesday Wednesday... Sunny, with a high near 74. Light and variable wind becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 53. West wind 5 to 10 mph becoming light in the evening. Winds could gust as high as 20 mph.
Sunny on Thursday Thursday... Sunny, with a high near 75.
Mostly Clear on Thursday Night Thursday Night... Mostly clear, with a low around 54.
Morning Fog on Friday Friday... Patchy fog before 11am. Otherwise, mostly sunny, with a high near 73.
Increasing Clouds on Friday Night Friday Night... Increasing clouds, with a low around 55.
Mostly Sunny on Saturday Saturday... Cloudy, then gradually becoming mostly sunny, with a high near 67.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 54.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 66.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 53.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 74.
Current Radar Image


Sun Almanac for Ontario, California
Sunrise: 05:50 AM
Sunset: 7:44 PM
Civil Sunrise:05:22 AM
Civil Sunset: 8:12 PM
Nautical Sunrise: 04:49 AM
Nautical Sunset: 8:45 PM
Astro Sunrise: 04:13 AM
Astro Sunset: 9:21 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.