Ontario, CA 91764 Weather

San Bernardino County5:59 AM PDT34.08°N, 117.63°W

Current conditions

Clear
63°
Clear
Feels like 63°
High 74°·Low 62° tonight
WindCalm
Humidity83%
Dew point57°
Pressure29.84 inHg
Visibility10 mi
Cloud cover46%
UV index0 Low
Sunrise7:01 AM
Sunset6:10 PM

Observed at Ontario International Airport · 19 min ago

Forecast

10-day

  • Overnight

    Partly cloudy, with a low around 62. North wind around 0 mph.

  • Wednesday

    A chance of rain showers between 11am and 5pm, then showers and thunderstorms. Partly sunny, with a high near 74. Southeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.

  • Wednesday Night

    Showers and thunderstorms. Cloudy, with a low around 60. Northwest wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

National Weather Service forecast updated 3 hrs ago.

Hourly

Hourly forecast
  1. Now Partly Cloudy 63°
  2. 6 AM Mostly Sunny 63°
  3. 7 AM Mostly Sunny 62°
  4. 8 AM Sunny 63°
  5. 9 AM Sunny 66°
  6. 10 AM Sunny 68°
  7. 11 AM Chance Rain Showers 71°31%
  8. 12 PM Chance Rain Showers 72°31%
  9. 1 PM Chance Rain Showers 73°31%
  10. 2 PM Chance Rain Showers 72°31%
  11. 3 PM Chance Rain Showers 72°31%
  12. 4 PM Chance Rain Showers 72°31%
  13. 5 PM Showers And Thunderstorms 69°82%
  14. 6 PM Showers And Thunderstorms 68°82%
  15. 7 PM Showers And Thunderstorms 66°82%
  16. 8 PM Showers And Thunderstorms 65°82%
  17. 9 PM Showers And Thunderstorms 64°82%
  18. 10 PM Showers And Thunderstorms 64°82%
  19. 11 PM Showers And Thunderstorms 64°90%
  20. Thu12 AM Showers And Thunderstorms 63°90%
  21. 1 AM Showers And Thunderstorms 62°90%
  22. 2 AM Showers And Thunderstorms 62°90%
  23. 3 AM Showers And Thunderstorms 62°90%
  24. 4 AM Showers And Thunderstorms 61°90%

10-day forecast

Details
  1. TonightOct 20 Partly Cloudy Partly Cloudy62°
  2. TodayOct 21 Showers And Thunderstorms Showers And Thunderstorms90%60°74°
  3. ThuOct 22 Showers And Thunderstorms Showers And Thunderstorms88%56°67°
  4. FriOct 23 Sunny Sunny55°70°
  5. SatOct 24 Sunny Sunny57°76°
  6. SunOct 25 Sunny Sunny58°78°
  7. MonOct 26 Sunny Sunny58°80°
  8. TueOct 27 Sunny Sunny78°
  9. WedOct 28 Partly cloudy Partly cloudy61°76°
  10. ThuOct 29 Sunny Sunny60°79°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news in California

More weather news

Air quality

Forecast

  • WedGood (50)

NW San Bernardino, CA reporting area. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:01 AM
Sunset 6:10 PM
Daylight 11 h 9 min (−2 min 0 s tomorrow)
Waxing Gibbous · 77% lit
Moonrise 3:39 PM Moonset 2:23 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low82° / 54°
Record high103° (2003)
Record low32° (1949)
Wettest0.25 in (1957)
Yesterday86° / 59°
Month to date0.93 in (normal 0.18 in)

Riverside Area, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in SGX, issued 1 hr ago

Synopsis

A low pressure system moving southward off the California coast will bring general cooling through Thursday. It is also expected to produce showers and a slight chance of thunderstorms for late today through Thursday as it moves inland through California into Nevada. Warmer and drier for the weekend. Offshore flow on Saturday could produce gusty northeast to east winds in and below mountain passes and canyons as well as the Inland Empire corridor between the Cajon Pass and the Santa Ana Mountains. The offshore flow weakens for Sunday into early next week.

Aviation

211130Z...SCT-BKN cloud layers around 2000 and 8000 feet MSL will continue into the afternoon. A band of RA/SHRA will move west to east through the region 21-06Z. Cigs will drop to 2500-3500 feet MSL and vis 3-6SM during this band's passage. A few embedded +SHRA/TSRA could produce brief and local IFR conditions. Winds shift from south to southwest and cigs lift to about 3000 feet MSL as the precip band passes after 11Z Thursday followed by SHRA.

Marine

A storm system will move through the coastal waters this afternoon through early Thursday. Southerly winds today will shift to southwest tonight, then westerly Thursday, with occasional wind gusts exceeding 20 knots. There is a 15-25% chance of TSRA after 22Z into Thursday. No hazardous marine conditions are expected Thursday night through Sunday.

Skywarn

Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.