- Clothing
- Waterproof jacket and umbrella strongly recommended.
Tomorrow's Weather Forecast - Houston
Tomorrow's weather in Houston. high 35°C (95°F), low 25°C (77°F). Rain Showers.
Tomorrow’s Outlook
Tomorrow will be 2°C warmer than today. Expect heavy rain, with rain chances climbing as high as 37%. That risk lines up with humidity averaging 75% through the day the more moisture in the air, the more readily clouds build into showers. Humidity stays high near 75%, so it will feel muggier and stickier than the temperature alone suggests. A light breeze near 24 km/h is expected. Sunrise is at 7:04 AM and sunset at 7:30 PM, for about 12h 26m of daylight.
- Tomorrow
- 35°/ 25°
- Today33° / 25°
Tomorrow’s Hourly Weather Outlook
Morning6 AM – Noon28°
- Rain probability
- 5%
- Wind speed
- 12 km/h
AfternoonNoon – 6 PM32°
- Rain probability
- 37%
- Wind speed
- 24 km/h
Evening6 PM – Midn30°
- Rain probability
- 37%
- Wind speed
- 15 km/h
NightMidn – 6 AM26°
- Rain probability
- 5%
- Wind speed
- 11 km/h
24-Hour Rain & Temperature Forecast
Tomorrow12 Sep
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Planning Advice for Tomorrow
- Outdoor
- Not ideal for outdoor plans or car washes — heavy rain expected.
- Travel
- Expect traffic slowdowns from wet roads. Allow extra time.
Sunrise & Sunset
Sunrise
Dawn 6:34 AMTotal Daylight
Full day forecastSolar noon 1:17 PM
Sunset
Dusk 8:00 PMvs today-1 min daylight
Sunrise shiftSame time
Sunset shift1 min earlier
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
Houston is forecast to reach a high of 35°C tomorrow, with an overnight low around 25°C. That's 3° above the long-term average high of 32°C for this time of year. It continues a recent pattern — 18 of the last 19 days with published data have run warmer than normal. Expect a low chance of rain (37% probability) and moderate breezes averaging 24 km/h. Air quality is currently Moderate (AQI 54), driven mainly by PM2.5 at 9.4 μg/m³.
Today vs Normal
33°C0° below normal
The long-term average high for today is 33°C.
18 of the last 19 days with published data ran above normal.
That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air Quality
Moderate
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.