Fullerton, CA Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Fullerton, CA in one place.
Partly sunny, with a high near 76. South wind 0 to 10 mph.
Local Weather Overview
This forecast page for Fullerton, CA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jun 6, 2026 8:48 AM PDT.
The active forecast window currently covers Jun 7 to Jun 12, 2026 for Fullerton, CA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 7 to Jun 12, 2026
- Latest sync
- Jun 6, 2026 8:48 AM PDT
- Forecast office
- SGX
- Source
- NOAA / NWS
Daily Outlook
This Week in Fullerton
Friday looks like the warmest upcoming period in Fullerton at 81 degrees F.
Sunday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Sunday at about 0 to 10 mph S.
The forecast from Jun 7 through Jun 12 stays mostly dry.
Forecast Details
- Last updated
- Jun 6, 2026 8:48 AM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- SGX
- Radar station
- KSOX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 60. South wind 0 to 10 mph.
Mostly sunny, with a high near 77. South wind 0 to 10 mph.
Partly cloudy, with a low around 63.
Mostly sunny, with a high near 78.
Partly cloudy, with a low around 62.
Mostly sunny, with a high near 80.
Partly cloudy, with a low around 62.
Mostly sunny, with a high near 80.
Partly cloudy, with a low around 62.
Sunny, with a high near 81.
Mostly clear, with a low around 63.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Jun 7
|
Partly Sunny
|
76°F |
0 to 10 mph
S
|
|
Sunday Night
Jun 7
|
Partly Cloudy
|
60°F |
0 to 10 mph
S
|
|
Monday
Jun 8
|
Mostly Sunny
|
77°F |
0 to 10 mph
S
|
|
Monday Night
Jun 8
|
Partly Cloudy
|
63°F |
0 to 10 mph
S
|
|
Tuesday
Jun 9
|
Mostly Sunny
|
78°F |
0 to 10 mph
S
|
|
Tuesday Night
Jun 9
|
Partly Cloudy
|
62°F |
5 to 10 mph
S
|
|
Wednesday
Jun 10
|
Mostly Sunny
|
80°F |
0 to 10 mph
S
|
|
Wednesday Night
Jun 10
|
Partly Cloudy
|
62°F |
0 to 10 mph
S
|
|
Thursday
Jun 11
|
Mostly Sunny
|
80°F |
0 to 10 mph
S
|
|
Thursday Night
Jun 11
|
Partly Cloudy
|
62°F |
0 to 10 mph
S
|
|
Friday
Jun 12
|
Sunny
|
81°F |
0 to 10 mph
S
|
|
Friday Night
Jun 12
|
Mostly Clear
|
63°F |
0 to 10 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fullerton.
