Lewisville (TX) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Lewisville.
Climate overview of Lewisville
Temperatures in Lewisville, Texas, United States of America, vary greatly throughout the year. August is the hottest month at 36°C (97°F), while January is the coldest at 14°C (57°F).
The city receives around 921 mm (36 in) of rain/snowfall per year. It experiences very hot summers and mild winters. May is the wettest month and August the driest. Sunshine peaks in July, when the city sees around 11.1 hours of sunshine per day.
Lewisville Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Lewisville - and find the best time to visit.
Monthly Temperature in Lewisville
The climate in Lewisville is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very hot 36°C (97°F) in August to a moderate 14°C (57°F) in January.
Nighttime temperatures range from 25°C (77°F) in August to 1°C (34°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Lewisville
Generally, Lewisville receives mid-range precipitation levels, with 921 mm (36 in) annually. The seasons in Lewisville bring significant changes in precipitation. The wettest month, May, receives high rainfall, with an average of 127 mm (5 in) of precipitation. This rainfall is distributed across 11 rainy days.
In contrast, the driest month, August, experiences much less rainfall, totaling 46 mm (1.8 in) over 6 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Lewisville Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Lewisville
In Lewisville, summer days are longer and more sunny, with daily sunshine hours peaking at 11.1 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 5.8 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Lewisville by Month
The relative humidity is high throughout the year in Lewisville.
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
Best Time to Visit Lewisville
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: March, April, October and November
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Very hot summers and mild winters
Frequently asked questions about the climate in Lewisville
What is the best time to visit Lewisville?
March, April, October and November typically offer the most optimal weather in Lewisville. In contrast, June, July and August tend to have less optimal conditions. Lewisville has very hot summers and mild winters.
What temperatures can I expect in Lewisville?
Daytime highs range from 14°C (57°F) in January to 36°C (97°F) in August. Nighttime lows range from 1°C (34°F) to 25°C (77°F). Temperatures vary considerably through the year.
How much rain does Lewisville get?
Annual rainfall is around 921 mm (36 in). May is the wettest month with 127 mm (5 in), while August is the driest with 46 mm (1.8 in).
How sunny is Lewisville?
Lewisville receives around 2,871 hours of sunshine per year. July is the sunniest month with 333 hours, while December is the cloudiest with just 175 hours. Overall, Lewisville enjoys abundant sunshine.
Lewisville 3-Day Forecast
Lewisville (TX) 3-Day Forecast
Lewisville on the map
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