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

Depending on the time of the year, temperatures range from very hot to pleasant in Weslaco. Typically, average maximum daytime temperatures range from a very hot 36°C (97°F) in August to a pleasant 21°C (70°F) in the coolest month, January.

Nights vary from 25°C (77°F) in August to around 10°C (50°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Weslaco has a moderate amount of precipitation, averaging 682 mm (27 in) of rainfall annually. The climate in Weslaco shows significant variation throughout the year. Expect high rainfall in September, the wettest month, with an average of 149 mm (5.9 in) of precipitation over 13 rainy days.

In contrast, the driest month February offers drier and sunnier days, with around 23 mm (0.9 in) of rainfall over 5 rainy days. For more details, please visit our Weslaco Precipitation page.

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

The average number of days each month with precipitation

For those who appreciate different seasons, Weslaco serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 10.9 hours of sunshine daily, and embrace the darker days in January, offering only 4.4 hours of daily sunlight.

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 Weslaco.

The city experiences its highest humidity in January, reaching 78%. In July, 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