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

The climate in Willis is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a very hot 35°C (95°F) in August, the warmest time of the year, to a moderate 16°C (61°F) during cooler months like January.

At night, you can expect temperatures ranging from 23°C (73°F) in August to around 3°C (37°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Willis has a notably wet climate with abundant precipitation, recording 1248 mm (49 in) of rainfall per year. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, May it receives high rainfall, averaging 159 mm (6.3 in) of precipitation, recorded across 10 rainy days. In contrast, the driest month February brings less rainfall, with 68 mm (2.7 in) over 10 rainy days. For more details, please visit our Willis Precipitation page.

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

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Willis. While July receives considerable daily sunshine with up to 9.8 hours, January marks the darkest time of the year, where sunshine is scarce 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 Willis.

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