October 18–24, 2026 | Weather Insights
Southeast Texas is starting the week with a refreshing taste of fall, but warmer temperatures will gradually return as we move through the coming days. Following a cooler start Sunday morning, the region can expect mostly sunny skies, dry conditions, and afternoon temperatures climbing into the 80s.
The big story this week will be the warming trend under persistent dry weather. Rain chances will remain very low for most of the week, providing favorable conditions for outdoor activities, travel, and events across the Houston metropolitan area and surrounding communities.
Sunday: A beautiful fall day
Sunday will offer some of the most comfortable weather Southeast Texas has experienced recently. Morning temperatures are starting out in the 40s and 50s across parts of the region, with afternoon highs generally reaching the middle 70s.
Mostly sunny skies and low humidity will make for an excellent day to spend outdoors. Clear skies and light winds will allow temperatures to fall again Sunday night, so you may want a light jacket for early-morning activities.
Monday and Tuesday: Sunshine continues
A quiet weather pattern will remain in place Monday and Tuesday. Expect partly to mostly sunny skies, cool mornings, and pleasantly warm afternoons.
High temperatures will generally reach the upper 70s to lower 80s, while overnight lows fall into the 50s and lower 60s. Rain chances will remain minimal, and no widespread rainfall is expected.
These conditions should provide favorable weather for the start of the workweek, including outdoor projects, commuting, and recreational activities.
Wednesday and Thursday: A noticeable warming trend
Temperatures will continue to climb during the middle of the week as afternoon highs reach the middle to upper 80s. Thursday could be one of the warmest days of the week, with some locations approaching the upper 80s.
Despite the warmer afternoons, mornings should remain relatively comfortable. Sunshine will dominate, humidity should stay manageable, and rain chances will remain very low.
The gradual temperature increase is a reminder that October in Southeast Texas can still deliver summerlike afternoons even when mornings feel distinctly autumnal.
Friday and Saturday: Warm and dry weather persists
The end of the week is expected to remain mostly sunny and warm, with afternoon highs generally in the middle to upper 80s.
At this time, there is no strong signal for widespread rainfall across Southeast Texas through Saturday. Anyone planning outdoor activities should benefit from the extended stretch of dry weather, although temperatures will feel warmer during the afternoon hours.
Keep in mind that forecast details can change, so continue monitoring updates for any developing weather systems.
What this means for Southeast Texas
The upcoming week looks relatively straightforward from a weather standpoint. The primary concern will not be rain or severe weather, but rather the gradual return of warmer afternoon temperatures.
Here are the main points to remember:
- Coolest conditions: Early Sunday morning, with temperatures in the 40s and 50s in some areas.
- Warming trend: Afternoon highs rise from the 70s Sunday into the 80s by midweek.
- Rain outlook: Mostly dry conditions are expected through Saturday, October 24.
- Best outdoor weather: Early in the week, when temperatures and humidity will be more comfortable.
- Late-week temperatures: Warmer afternoons, with highs mainly in the 80s.
The Weather Insights takeaway
Southeast Texas is looking at a beautiful stretch of October weather, featuring cool mornings, abundant sunshine, and a steady warming trend. Enjoy the comfortable start to the week, but plan for warmer afternoons as temperatures climb into the 80s.
For residents across Houston and Southeast Texas, this should be a welcome opportunity to enjoy the outdoors without having to worry much about rain.
Stay connected with Weather Insights for the latest forecasts, regional weather updates, and analysis of the weather patterns affecting Southeast Texas.
Forecast valid October 18–24, 2026. Conditions may vary across the region; check the latest local forecast for updates.
Weather Insights | Local Forecasts. Science-Based Analysis.
