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

The climate in Plano is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a very hot 36°C (97°F) in August to a moderate 13°C (55°F) in the coolest month, January.

Nights vary from 25°C (77°F) in August to around 1°C (34°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Plano has a notably wet climate with abundant precipitation, recording 1049 mm (41 in) of rain/snowfall per year. The climate in Plano shows significant variation throughout the year. Expect high rainfall in May, the wettest month, with an average of 148 mm (5.8 in) of precipitation over 11 rainy days.

In contrast, the driest month August offers drier and sunnier days, with around 52 mm (2 in) of rainfall over 7 rainy days. For more details, please visit our Plano 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, Plano serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 11.1 hours of sunshine daily, and embrace the darker days in December, offering only 5.8 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 Plano.

The city experiences its highest humidity in May, reaching 70%. In July, the humidity drops to its lowest level at 60%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year