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Fullerton, CA 92833 Weather

It is 61°F and clear in Fullerton, CA 92833, observed at 2:35 AM PDT. Today: Slight Chance Light Rain, high 72°F, low 59°F. Hourly and 10-day forecast from the National Weather Service. Times are local (PDT).

Fullerton, CA 92833 current weather

61°F

Clear

H 72° / L 59°Feels like 61°

  • No rain expected in the next 12 hours

Observed at Fullerton, Fullerton Municipal Airport (1.6 mi away), 10/31/2026, 2:35 AM PDT

Hourly forecast

NWS, updated 10/31/2026, 12:09 AM PT

  1. Now60°28%
  2. 4 AM60°28%
  3. 5 AM60°17%
  4. 6 AM59°17%
  5. 7 AM59°17%
  6. 8 AM61°17%
  7. 9 AM64°17%
  8. 10 AM66°17%
  9. 11 AM68°16%
  10. 12 PM70°16%
  11. 1 PM71°16%
  12. 2 PM71°16%
  13. 3 PM72°16%
  14. 4 PM71°16%
  15. 5 PM70°63%
  16. 6 PM68°63%
  17. 7 PM66°63%
  18. 8 PM65°63%
  19. 9 PM64°63%
  20. 10 PM63°63%
  21. 11 PM63°77%
  22. 12 AM62°77%Sun
  23. 1 AM61°77%
  24. 1 AM61°77%
  25. 2 AM60°77%
  26. 3 AM60°77%
  27. 4 AM60°50%
  28. 5 AM59°50%
  29. 6 AM59°50%
  30. 7 AM60°50%
  31. 8 AM63°50%
  32. 9 AM65°50%
  33. 10 AM66°25%
  34. 11 AM68°25%
  35. 12 PM70°25%
  36. 1 PM70°25%
  37. 2 PM71°25%
  38. 3 PM70°25%
  39. 4 PM70°
  40. 5 PM68°
  41. 6 PM69°
  42. 7 PM65°
  43. 8 PM67°
  44. 9 PM66°
  45. 10 PM62°
  46. 11 PM65°
  47. 12 AM65°Mon
  48. 1 AM60°

10-day forecast

Tap a day for details

  • Today10/3163% chance of precipitationLow 59°High 72°

    Saturday: A slight chance of rain before 5pm, then rain showers likely. Mostly cloudy, with a high near 72. East wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

    Overnight: A chance of rain. Mostly cloudy, with a low around 59. East wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

    Slight Chance Light Rain
  • Sun11/150% chance of precipitationLow 56°High 71°

    Sunday: A chance of rain showers before 4pm. Partly sunny, with a high near 71. Southwest wind 0 to 10 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

    Sunday Night: Mostly clear, with a low around 56. Southeast wind around 5 mph.

    Chance Rain Showers
  • Mon11/2Low 58°High 76°

    Monday: Sunny, with a high near 76.

    Monday Night: Partly cloudy, with a low around 58.

    Sunny
  • Tue11/3Low 56°High 77°

    Tuesday: Sunny, with a high near 77.

    Tuesday Night: Partly cloudy, with a low around 56.

    Sunny
  • Wed11/4Low 56°High 76°

    Wednesday: Sunny, with a high near 76.

    Wednesday Night: Mostly clear, with a low around 56.

    Sunny
  • Thu11/5Low 56°High 76°

    Thursday: Mostly sunny, with a high near 76.

    Thursday Night: Mostly clear, with a low around 56.

    Mostly Sunny
  • Fri11/6Low High 77°

    Friday: Sunny, with a high near 77.

    Sunny
  • Sat11/7Model blendLow 61°High 84°

    Saturday: Sunny. High near 84°. Low that night near 61°.

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

  • Sun11/8Model blendLow 62°High 84°

    Sunday: Mostly sunny. High near 84°. Low that night near 62°.

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

  • Mon11/9Model blendLow 59°High 80°

    Monday: Partly cloudy. High near 80°. Low that night near 59°.

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

Forecast for 33.880, -117.959 from the NWS SGX office, updated 10/31/2026, 12:09 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KFUL (Fullerton Muni, 2 mi), model run 10/31/2026, 1:00 AM 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. Now60°Chance Light Rain28%5 mph
  2. 4 AM60°Chance Light Rain28%5 mph
  3. 5 AM60°Slight Chance Light Rain17%5 mph
  4. 6 AM59°Slight Chance Light Rain17%5 mph
  5. 7 AM59°Slight Chance Light Rain17%5 mph
  6. 8 AM61°Slight Chance Light Rain17%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 Fullerton, CA 92833 right now?
The latest observation from Fullerton, Fullerton Municipal Airport was 61°F and clear, reported at 10/31/2026, 2:35 AM PDT.
What is the high temperature today in Fullerton, CA 92833?
The National Weather Service forecast for saturday calls for a high near 72°F. Slight Chance Light Rain.
Will it rain in Fullerton, CA 92833 in the next 24 hours?
The hourly forecast shows a 63% chance of precipitation around 10/31/2026, 5:00 PM PDT.
What is the 10-day forecast for Fullerton, CA 92833?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 7 to Nov 9) come from the NOAA National Blend of Models, with highs of 80°F to 84°F. Model guidance this far out often changes.
What time is sunrise and sunset in Fullerton, CA 92833 today?
Sunrise is about 7:10 AM PDT and sunset is about 6:00 PM PDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Fullerton, CA 92833?
At Fullerton MUNI AP, the 1991 to 2020 normal high in October is 80°F and the normal low is 58°F.

Rain and snow totals

Next 3 days, NWS forecast grid

Rain (liquid)
0.37 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), DILLON Fire (0 acres), HENDERSON Fire (0 acres), LAC-389672 Fire, LAC-389721 Fire

UV and air quality forecast

EPA and AirNow

AQI forecast today (North Orange CO)
39GoodPM2.5

UV index guide · Air quality

Drought

By county

Orange County, week of 10/27/2026

No drought or abnormal dryness in this county.

Tides nearby

NOAA tide stations

Beaches nearby

EPA BEACON beaches

Sun and moon

Local time, center of the area

Sunrise
7:10 AM
Sunset
6 PM
Daylight
10 hr 50 min
Moon
Waning Gibbous 72% lit
First light (civil dawn)
6:44 AM
Last light (civil dusk)
6:25 PM
Moonrise
11:13 PM
Moonset
1:07 PM

Normal October weather

Climate

Normal October high 80°, low 58°, precipitation 0.50 in for the month. 1991 to 2020 normals at Fullerton MUNI AP, 1 mi away.

Other places nearby

Data sources

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About this data

Weather and emergencies: Weather, air quality and hazard information on this page is delayed and may be incomplete. It is not a substitute for official warnings. Always follow the National Weather Service, local emergency management and public safety officials. In an emergency, call 911. For evacuation orders, use your local official alert system.

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