Rancho Cucamonga, CA 91739 Weather

San Bernardino County10:24 AM PDT34.17°N, 117.52°W

Current conditions

Chance Rain Showers
54°
Chance Rain Showers
Feels like 54°
High 57°·Low 50°
WindSW 10 mph gusts 17 mph
Humidity100%
Dew point54°
Cloud cover63%
UV index3 Moderate
Sunrise7:02 AM
Sunset6:09 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day

  • Today

    A chance of rain showers before 11am, then showers and thunderstorms likely. Mostly cloudy, with a high near 57. Southwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

  • Tonight

    A chance of rain showers before 5am. Mostly cloudy, with a low around 50. Southeast wind 0 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

  • Friday

    Mostly sunny, with a high near 59. Southeast wind 0 to 5 mph.

National Weather Service forecast updated 8 hrs ago.

Hourly

Hourly forecast
  1. Now Chance Rain Showers 54°45%
  2. 11 AM Showers And Thunderstorms Likely 54°70%
  3. 12 PM Showers And Thunderstorms Likely 55°70%
  4. 1 PM Showers And Thunderstorms Likely 55°70%
  5. 2 PM Showers And Thunderstorms Likely 56°70%
  6. 3 PM Showers And Thunderstorms Likely 56°70%
  7. 4 PM Showers And Thunderstorms Likely 56°70%
  8. 5 PM Chance Rain Showers 55°28%
  9. 6 PM Chance Rain Showers 55°28%
  10. 7 PM Chance Rain Showers 53°28%
  11. 8 PM Chance Rain Showers 53°28%
  12. 9 PM Chance Rain Showers 52°28%
  13. 10 PM Chance Rain Showers 52°28%
  14. 11 PM Chance Rain Showers 53°27%
  15. Fri12 AM Chance Rain Showers 52°27%
  16. 1 AM Chance Rain Showers 53°27%
  17. 2 AM Chance Rain Showers 53°27%
  18. 3 AM Chance Rain Showers 52°27%
  19. 4 AM Chance Rain Showers 52°27%
  20. 5 AM Mostly Cloudy 52°11%
  21. 6 AM Mostly Cloudy 51°11%
  22. 7 AM Mostly Cloudy 52°11%
  23. 8 AM Partly Sunny 52°11%
  24. 9 AM Partly Sunny 53°11%

Daily forecast

Details
  1. TodayOct 22 Showers And Thunderstorms Likely Showers And Thunderstorms Likely70%50°57°
  2. FriOct 23 Mostly Sunny Mostly Sunny14%51°59°
  3. SatOct 24 Sunny Sunny54°68°
  4. SunOct 25 Sunny Sunny56°71°
  5. MonOct 26 Sunny Sunny56°72°
  6. TueOct 27 Sunny Sunny57°71°
  7. WedOct 28 Mostly Sunny Mostly Sunny55°71°
  8. ThuOct 29 Cloudy Cloudy58°77°
  9. FriOct 30 Mostly sunny Mostly sunny56°74°

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

  • ThuGood (36)

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

Sun & moon

Sunrise 7:02 AM
Sunset 6:09 PM
Daylight 11 h 7 min (−2 min 0 s tomorrow)
Waxing Gibbous · 86% lit
Moonrise 4:04 PM Moonset 3:23 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low81° / 54°
Record high103° (1917)
Record low34° (1949)
Wettest0.73 in (1941)
Yesterday79° / 60°, 0.37 in
Month to date1.30 in (normal 0.19 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 5 hrs ago

Synopsis

Showers and a slight chance of thunderstorms will continue through today. There will be additional, mostly light showers for tonight, decreasing and ending from northwest late Friday afternoon. Southwest to west winds along the desert slopes of the mountains will gust to 40 to 50 mph through this afternoon. It will be dry and warmer for the weekend through Monday, then gradually cooler for next week with a chance of precipitation for late next week. Tides will increase over the weekend, remaining elevated through much of next week.

Aviation

221130Z...SCT SHRA and isolated TSRA this morning, decreasing in frequency after 15Z, but continuing through about 22Z. Cigs down to 1500-2500 feet MSL and vis 3-5SM at times through 16Z, such as in heavier SHRA or TSRA, otherwise bases will be 3500-4500 feet MSL. Partial obscuration of mountains this morning, but improving vis during the day. Isolated -SHRA after 22Z. Onshore winds in mountains into deserts 25-30 kts, creating MOD up/downdrafts in lee of ridges.

Marine

A storm system will slowly move through the coastal waters today through Friday. There is a slight chance of thunderstorms today. Any thunderstorm is capable of producing gusty, erratic winds, choppy seas, lightning, briefly heavy rainfall with reduced visibility, and waterspouts. Isolated northwest wind gusts will occasionally exceed 20 knots Friday. No hazardous marine conditions are expected Friday night through Monday.

Beaches

Astronomical high tides will create minor to moderate coastal flooding starting Saturday. Tides are 1.4-1.6 feet above predictions. Morning high tides could reach 7 feet Saturday morning and are likely to exceed 7.5 feet by Monday morning.

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.