Weather forecast for: Tomball TX
Last Update: 7:20 pm CDT Sep 4, 2026
Tonight: Partly cloudy, with a low around 75. Southeast wind around 5 mph becoming calm in the evening.
Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Increasing clouds, with a high near 94. Heat index values as high as 105. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night: A 10 percent chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 75. East wind around 5 mph becoming calm in the evening.
Sunday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 94. Heat index values as high as 107. Calm wind becoming east around 5 mph. Chance of precipitation is 60%.
Sunday Night: Partly cloudy, with a low around 76. Southeast wind around 5 mph becoming calm in the evening.
Labor Day: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96.
Monday Night: Mostly clear, with a low around 76.
Tuesday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.
Tuesday Night: Mostly clear, with a low around 76.
Wednesday: A 30 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 93.
Wednesday Night: Partly cloudy, with a low around 75.
Thursday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Thursday Night: Partly cloudy, with a low around 75.
Friday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 95.