Lewisville Weather in September

September in Lewisville typically sees daytime highs of 32°C (90°F) and nighttime lows of 21°C (70°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in Lewisville in September

Rain is expected on roughly 7 days, totalling around 71 mm (2.8 in) for the month. Rainfall tends to arrive in short, intense showers this month. Rain days are few, but the showers can be surprisingly heavy.

Temperature in Lewisville in September

In September, Lewisville sees very high temperatures, with highs of 32°C (90°F). Nights drop to around 21°C (70°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. Nights are mild at around 21°C (70°F), which is comfortable for most people.

Sunshine in Lewisville in September

The days are predominantly sunny, with an estimated total of around 248 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Should you favor a climate that's both dry and comfortably warm, March, April, October and November typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.