Fullerton, LA Weather Forecast
Local 7-day forecast
Patchy Fog then Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Fullerton, LA in one place.
Patchy fog before 8am. Sunny, with a high near 96. Heat index values as high as 102. East wind 0 to 5 mph.
Local Weather Overview
This forecast page for Fullerton, LA 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: Sep 15, 2026 7:49 PM CDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Fullerton, LA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 7:49 PM CDT
- Forecast office
- LCH
- Source
- NOAA / NWS
Daily Outlook
This Week in Fullerton
Wednesday looks like the warmest upcoming period in Fullerton at 96 degrees F.
Thursday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 5 mph E.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 7:49 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LCH
- Radar station
- KPOE
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 75. Heat index values as high as 99. East wind 0 to 5 mph.
Sunny, with a high near 95. East wind 0 to 5 mph.
Mostly clear, with a low around 70. East wind 0 to 5 mph.
Sunny, with a high near 95. East wind 0 to 5 mph.
Clear, with a low around 70. East wind around 0 mph.
Sunny, with a high near 96. Northeast wind 0 to 5 mph.
Mostly clear, with a low around 72.
Sunny, with a high near 96.
Mostly clear, with a low around 73.
A chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Patchy Fog then Sunny
|
96°F |
0 to 5 mph
E
|
|
Wednesday Night
Sep 16
|
Partly Cloudy
|
75°F |
0 to 5 mph
E
|
|
Thursday
Sep 17
|
Sunny
|
95°F |
0 to 5 mph
E
|
|
Thursday Night
Sep 17
|
Mostly Clear
|
70°F |
0 to 5 mph
E
|
|
Friday
Sep 18
|
Sunny
|
95°F |
0 to 5 mph
E
|
|
Friday Night
Sep 18
|
Clear
|
70°F |
0 mph
|
|
Saturday
Sep 19
|
Sunny
|
96°F |
0 to 5 mph
NE
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
72°F |
0 mph
|
|
Sunday
Sep 20
|
Sunny
|
96°F |
0 mph
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
73°F |
0 mph
|
|
Monday
Sep 21
|
Sunny then Chance Showers And Thunderstorms
|
95°F |
0 mph
|
|
Monday Night
Sep 21
|
Chance Showers And Thunderstorms
|
72°F |
0 mph
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fullerton.