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Fullerton, CA Weather

It is 63°F in Fullerton, CA, observed at 9:15 AM PDT. Today: Chance Light Rain, high 72°F, low 61°F. Hourly and 10-day forecast from the National Weather Service. Times are local (PDT).

Fullerton, CA current weather

63°F

Slight Chance Light Rain

H 72° / L 61°Feels like 63°

Observed at GW4237 ANAHEIM (4.8 mi away), 10/30/2026, 9:15 AM PDT

Hourly forecast

NWS, updated 10/30/2026, 12:08 AM PT

  1. Now65°40%
  2. 10 AM67°40%
  3. 11 AM68°37%
  4. 12 PM70°37%
  5. 1 PM70°37%
  6. 2 PM71°37%
  7. 3 PM71°37%
  8. 4 PM71°37%
  9. 5 PM71°36%
  10. 6 PM69°36%
  11. 7 PM67°36%
  12. 8 PM66°36%
  13. 9 PM65°36%
  14. 10 PM64°36%
  15. 11 PM63°26%
  16. 12 AM63°26%Sat
  17. 1 AM63°26%
  18. 2 AM62°26%
  19. 3 AM62°26%
  20. 4 AM62°26%
  21. 5 AM62°12%
  22. 6 AM62°12%
  23. 7 AM62°12%
  24. 8 AM62°12%
  25. 9 AM65°12%
  26. 10 AM67°12%
  27. 11 AM69°32%
  28. 12 PM70°32%
  29. 1 PM71°32%
  30. 2 PM72°32%
  31. 3 PM71°32%
  32. 4 PM71°32%
  33. 5 PM70°76%
  34. 6 PM69°76%
  35. 7 PM67°76%
  36. 8 PM66°76%
  37. 9 PM65°76%
  38. 10 PM64°76%
  39. 11 PM64°89%
  40. 12 AM63°89%Sun
  41. 1 AM63°89%
  42. 1 AM63°89%
  43. 2 AM62°89%
  44. 3 AM62°89%
  45. 4 AM62°66%
  46. 5 AM62°66%
  47. 6 AM62°66%
  48. 7 AM63°66%

10-day forecast

Tap a day for details

  • Today10/3040% chance of precipitationLow 61°High 72°

    Today: A chance of rain. Mostly cloudy, with a high near 72. South wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.

    Tonight: A chance of rain before 5am. Mostly cloudy, with a low around 61. Southeast wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

    Chance Light Rain
  • Sat10/3189% chance of precipitationLow 61°High 72°

    Saturday: Rain showers likely after 11am. Mostly cloudy, with a high near 72. Southeast wind 0 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.

    Saturday Night: Rain showers. Cloudy, with a low around 61. South wind 0 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Rain Showers Likely
  • Sun11/166% chance of precipitationLow 55°High 72°

    Sunday: Rain showers likely before 4pm. Partly sunny, with a high near 72. West wind 0 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

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

    Rain Showers Likely
  • Mon11/2Low 57°High 76°

    Monday: Sunny, with a high near 76.

    Monday Night: Mostly clear, with a low around 57.

    Sunny
  • Tue11/311% chance of precipitationLow 55°High 77°

    Tuesday: Sunny, with a high near 77.

    Tuesday Night: Partly cloudy, with a low around 55.

    Sunny
  • Wed11/411% chance of precipitationLow 55°High 73°

    Wednesday: Mostly sunny, with a high near 73.

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

    Mostly Sunny
  • Thu11/528% chance of precipitationLow 54°High 73°

    Thursday: Sunny, with a high near 73.

    Thursday Night: A chance of rain showers after 4am. Partly cloudy, with a low around 54.

    Sunny
  • Fri11/6Model blend15% chance of precipitationLow 57°High 75°

    Friday: Mostly sunny, slight chance of rain. High near 75°. Low that night near 57°.

    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 59°High 78°

    Saturday: Mostly sunny. High near 78°. 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.

  • Sun11/8Model blendLow 59°High 80°

    Sunday: Partly cloudy. High near 80°. Low that night near 59°. About 0.07 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.

Forecast for 33.889, -117.921 from the NWS SGX office, updated 10/30/2026, 12:08 AM PT · Official forecast on weather.gov

Days 8 to 10: NOAA National Blend of Models, station KFUL (Fullerton Muni, 4 mi), model run 10/30/2026, 7:00 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. Now65°Slight Chance Light Rain40%0 mph
  2. 10 AM67°Slight Chance Light Rain40%5 mph
  3. 11 AM68°Chance Light Rain37%5 mph
  4. 12 PM70°Chance Light Rain37%5 mph
  5. 1 PM70°Chance Light Rain37%5 mph
  6. 2 PM71°Chance Light Rain37%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 right now?
The latest observation from GW4237 ANAHEIM was 63°F, reported at 10/30/2026, 9:15 AM PDT.
What is the high temperature today in Fullerton, CA?
The National Weather Service forecast for today calls for a high near 72°F. Chance Light Rain.
Will it rain in Fullerton, CA 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 Fullerton, CA?
The first 7 days come from the National Weather Service forecast. Days 8 to 10 (Nov 6 to Nov 8) come from the NOAA National Blend of Models, with highs of 75°F to 80°F. Model guidance this far out often changes.
What time is sunrise and sunset in Fullerton, CA today?
Sunrise is about 7:09 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?
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)
0.69 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-389240 Fire, LAC-389289 Fire

UV and air quality forecast

EPA and AirNow

AQI forecast today (North Orange CO)
33GoodPM2.5

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
7:09 AM
Sunset
6 PM
Daylight
10 hr 51 min
Moon
Waning Gibbous 78% lit
First light (civil dawn)
6:43 AM
Last light (civil dusk)
6:26 PM
Moonrise
9:59 PM
Moonset
12:14 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, 4 mi away.

Other places nearby

Data sources

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About this data

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