Fullerton, TX Weather Forecast
Local 7-day forecast
Mostly Clear
Track current conditions, temperature changes, wind, and the full daily outlook for Fullerton, TX in one place.
Mostly clear, with a low around 75. Wind around 0 mph.
Local Weather Overview
This forecast page for Fullerton, TX 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 16, 2026 5:53 AM CDT.
The active forecast window currently covers Sep 16 to Sep 22, 2026 for Fullerton, TX.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 22, 2026
- Latest sync
- Sep 16, 2026 5:53 AM CDT
- Forecast office
- HGX
- Source
- NOAA / NWS
Daily Outlook
This Week in Fullerton
Wednesday looks like the warmest upcoming period in Fullerton at 95 degrees F.
Friday Night is the coolest period ahead with temperatures near 71 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 5 mph NE.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 16, 2026 5:53 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- HGX
- Radar station
- KHGX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms between 1pm and 5pm. Mostly sunny, with a high near 95. Heat index values as high as 105. Northeast wind 0 to 5 mph.
Partly cloudy, with a low around 76. Heat index values as high as 103. East wind around 0 mph.
A chance of showers and thunderstorms after 11am. Mostly sunny. High near 93, with temperatures falling to around 88 in the afternoon. Heat index values as high as 102. East wind around 5 mph. Chance of precipitation is 30%.
Mostly clear, with a low around 72. East wind 0 to 5 mph.
Sunny, with a high near 93.
Clear, with a low around 71.
Sunny, with a high near 93.
Mostly clear, with a low around 72.
Sunny, with a high near 94.
Mostly clear, with a low around 73.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms after 7am. Sunny, with a high near 93.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Sep 16
|
Mostly Clear
|
75°F |
0 mph
|
|
Wednesday
Sep 16
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
95°F |
0 to 5 mph
NE
|
|
Wednesday Night
Sep 16
|
Partly Cloudy
|
76°F |
0 mph
|
|
Thursday
Sep 17
|
Chance Showers And Thunderstorms
|
93°F |
5 mph
E
|
|
Thursday Night
Sep 17
|
Mostly Clear
|
72°F |
0 to 5 mph
E
|
|
Friday
Sep 18
|
Sunny
|
93°F |
0 to 5 mph
E
|
|
Friday Night
Sep 18
|
Clear
|
71°F |
0 to 5 mph
E
|
|
Saturday
Sep 19
|
Sunny
|
93°F |
0 to 5 mph
E
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
72°F |
0 to 5 mph
SE
|
|
Sunday
Sep 20
|
Sunny
|
94°F |
0 to 5 mph
E
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
73°F |
0 mph
|
|
Monday
Sep 21
|
Mostly Sunny then Chance Showers And Thunderstorms
|
93°F |
0 mph
|
|
Monday Night
Sep 21
|
Chance Showers And Thunderstorms then Partly Cloudy
|
73°F |
0 mph
|
|
Tuesday
Sep 22
|
Slight Chance Showers And Thunderstorms
|
93°F |
0 to 5 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Fullerton.