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Fontana, CA 92337 Weather

It is 74°F in Fontana, CA 92337, observed at 4 PM PDT. Today: Mostly Cloudy, high 75°F, low 60°F. Hourly and 10-day forecast from the National Weather Service. Times are local (PDT).

Fontana, CA 92337 current weather

74°F

Mostly Cloudy

H 75° / L 60°Feels like 73°

  • No rain expected in the next 12 hours

Observed at Fontana-Arrow Highway (3.5 mi away), 10/29/2026, 4:00 PM PDT

Hourly forecast

NWS, updated 10/29/2026, 11:32 AM PT

  1. Now72°
  2. 6 PM69°
  3. 7 PM67°
  4. 8 PM66°
  5. 9 PM65°
  6. 10 PM64°
  7. 11 PM64°20%
  8. 12 AM63°20%Fri
  9. 1 AM62°20%
  10. 2 AM61°20%
  11. 3 AM61°20%
  12. 4 AM61°20%
  13. 5 AM60°20%
  14. 6 AM60°20%
  15. 7 AM60°20%
  16. 8 AM61°20%
  17. 9 AM62°20%
  18. 10 AM64°20%
  19. 11 AM65°17%
  20. 12 PM67°17%
  21. 1 PM68°17%
  22. 2 PM69°17%
  23. 3 PM69°17%
  24. 4 PM70°17%
  25. 5 PM69°17%
  26. 6 PM68°17%
  27. 7 PM67°17%
  28. 8 PM65°17%
  29. 9 PM63°17%
  30. 10 PM63°17%
  31. 11 PM62°
  32. 12 AM61°Sat
  33. 1 AM61°
  34. 2 AM60°
  35. 3 AM59°
  36. 4 AM59°
  37. 5 AM58°
  38. 6 AM58°
  39. 7 AM58°
  40. 8 AM59°
  41. 9 AM61°
  42. 10 AM64°
  43. 11 AM67°14%
  44. 12 PM69°14%
  45. 1 PM70°14%
  46. 2 PM70°14%
  47. 3 PM70°14%
  48. 4 PM69°14%

10-day forecast

Tap a day for details

  • Today10/2920% chance of precipitationLow 60°High 75°

    This Afternoon: Mostly cloudy, with a high near 75. Southwest wind around 10 mph, with gusts as high as 20 mph.

    Tonight: A slight chance of rain showers after 11pm. Cloudy, with a low around 60. West wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

    Mostly Cloudy
  • Fri10/3020% chance of precipitationLow 58°High 71°

    Friday: A slight chance of rain showers. Cloudy, with a high near 71. West wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

    Friday Night: A slight chance of rain showers before 11pm. Mostly cloudy, with a low around 58. Southwest wind 0 to 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

    Slight Chance Rain Showers
  • Sat10/3190% chance of precipitationLow 58°High 71°

    Saturday: Rain showers after 5pm. Mostly cloudy, with a high near 71. South wind 0 to 5 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.

    Saturday Night: Rain showers. Cloudy, with a low around 58. Chance of precipitation is 90%.

    Mostly Cloudy then Rain Showers
  • Sun11/174% chance of precipitationLow 54°High 68°

    Sunday: Rain showers likely. Mostly cloudy, with a high near 68.

    Sunday Night: A slight chance of rain showers before 10pm. Partly cloudy, with a low around 54.

    Rain Showers Likely
  • Mon11/2Low 54°High 73°

    Monday: Sunny, with a high near 73.

    Monday Night: Mostly clear, with a low around 54.

    Sunny
  • Tue11/3Low 55°High 76°

    Tuesday: Sunny, with a high near 76.

    Tuesday Night: Mostly clear, with a low around 55.

    Sunny
  • Wed11/4Low 54°High 74°

    Wednesday: Sunny, with a high near 74.

    Wednesday Night: Mostly clear, with a low around 54.

    Sunny
  • Thu11/5Model blendLow 54°High 71°

    Thursday: Mostly sunny. High near 71°. Low that night near 54°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Fri11/6Model blend14% chance of precipitationLow 55°High 72°

    Friday: Mostly sunny. High near 72°. Low that night near 55°. About 0.02 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sat11/7Model blendLow 56°High 74°

    Saturday: Mostly sunny. High near 74°. Low that night near 56°.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 34.052, -117.473 from the NWS SGX office, updated 10/29/2026, 11:32 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KONT (Ontario Intl, 6 mi), model run 10/29/2026, 1:00 PM PDT

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now72°Mostly Cloudy6%10 mph
  2. 6 PM69°Mostly Cloudy6%10 mph
  3. 7 PM67°Mostly Cloudy6%5 mph
  4. 8 PM66°Cloudy6%5 mph
  5. 9 PM65°Cloudy6%5 mph
  6. 10 PM64°Cloudy6%5 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

What is the weather in Fontana, CA 92337 right now?
The latest observation from Fontana-Arrow Highway was 74°F, reported at 10/29/2026, 4:00 PM PDT.
What is the high temperature today in Fontana, CA 92337?
The National Weather Service forecast for this afternoon calls for a high near 75°F. Mostly Cloudy.
Will it rain in Fontana, CA 92337 in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What is the 10-day forecast for Fontana, CA 92337?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 5 to Nov 7) come from the NOAA National Blend of Models, with highs of 71°F to 74°F. Model guidance this far out often changes.
What time is sunrise and sunset in Fontana, CA 92337 today?
Sunrise is about 7:07 AM PDT and sunset is about 5:59 PM PDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Fontana, CA 92337?
At Riverside MUNI AP, the 1991 to 2020 normal high in October is 83°F and the normal low is 55°F.

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
0.61 in
Snow
0.00 in
Ice
0.00 in

Nearby hazards

California hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: NORTE Fire (570 acres), HENDERSON Fire (0 acres), LAC-387698 Fire, LAC-388234 Fire, LAC-389240 Fire

UV and air quality forecast

EPA and AirNow

AQI forecast tomorrow (Metro Riverside CO)
44GoodPM2.5

UV index guide · Air quality

Drought

By county

San Bernardino County, week of 10/27/2026

18% of the county is in moderate drought or worse.

Sun and moon

Local time, center of the area

Sunrise
7:07 AM
Sunset
5:59 PM
Daylight
10 hr 53 min
Moon
Waning Gibbous 84% lit
First light (civil dawn)
6:41 AM
Last light (civil dusk)
6:25 PM
Moonrise
8:47 PM
Moonset
11:12 AM

Normal October weather

Climate

Normal October high 83°, low 55°, precipitation 0.33 in for the month. 1991 to 2020 normals at Riverside MUNI AP, 7 mi away.

Other places nearby

Data sources

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About this data

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