Lewisville Climate by Month
Lewisville, Texas, United States
Very hot summers and cool winters, with rain spread through the year.
Lewisville has very hot summers and cool winters, with rain spread through the year. Expect highs of 96°F (36°C) in July and 56°F (14°C) in January, with the coldest nights (January) near 35°F (2°C). It gets 37 in (936 mm) of rain a year, spread across the months.
- Warmest month
- 96°F(36°C)
- Average high, July
- Coldest nights
- 35°F(2°C)
- Average low, January
- Rain per year
- 37 in(936 mm)
- No clear rainy season
- Humidity
- 63%
- Sunniest: July
Best and worst months in Lewisville
Best for weatherThe most comfortable weather comes in April, with highs around 76°F (25°C) and about 3.5 in (89 mm) of rain a month.
Least pleasantJuly and August are the least pleasant; August is the hottest, with highs of 96°F (36°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in April.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Lewisville weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 56°F(14°C) | 35°F(2°C) | 2.2 in(56 mm) | 67% | 2.6 |
| FebFebruary | 61°F(16°C) | 39°F(4°C) | 2.5 in(63 mm) | 65% | 3.3 |
| MarMarch | 68°F(20°C) | 46°F(8°C) | 3.1 in(78 mm) | 62% | 4.1 |
| AprAprilBest | 76°F(25°C) | 54°F(12°C) | 3.5 in(89 mm) | 66% | 5.3 |
| MayMay | 84°F(29°C) | 63°F(17°C) | 4.9 in(125 mm) | 68% | 5.7 |
| JunJune | 91°F(33°C) | 71°F(22°C) | 3.7 in(95 mm) | 66% | 6.5 |
| JulJuly | 96°F(36°C) | 75°F(24°C) | 2.3 in(58 mm) | 60% | 7.0 |
| AugAugust | 96°F(36°C) | 74°F(24°C) | 2.3 in(59 mm) | 58% | 6.3 |
| SepSeptember | 89°F(32°C) | 67°F(20°C) | 3.8 in(96 mm) | 61% | 5.1 |
| OctOctober | 79°F(26°C) | 56°F(13°C) | 3.7 in(94 mm) | 61% | 3.9 |
| NovNovember | 67°F(20°C) | 45°F(7°C) | 2.5 in(63 mm) | 65% | 2.8 |
| DecDecember | 58°F(14°C) | 37°F(3°C) | 2.4 in(60 mm) | 62% | 2.4 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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