Tomball (TX) Weather & Climate: Best Time to Visit

The climate in Tomball is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a very hot 35°C (95°F) in August. In January, the coolest month of the year, temperatures drop to a moderate 17°C (63°F).

At night, temperatures range from around 24°C (75°F) in August to 5°C (41°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Tomball has a notably wet climate with abundant precipitation, recording 1321 mm (52 in) of rainfall per year. Tomball can be quite wet during October, receiving approximately 162 mm (6.4 in) of precipitation over 7 rainy days.

In contrast, during the driest month (February), you will experience much drier conditions, with 62 mm (2.4 in) of precipitation spread across 9 rainy days. For more details, please visit our Tomball Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Tomball can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.8 hours of sunshine daily. In contrast, the city experiences much darker days in January, with only 4.7 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Tomball.

The city experiences its highest humidity in September, reaching 77%. In March, the humidity drops to its lowest level at 73%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year