Lewisville, TX Weather by Month and Climate Averages

How much rain does Lewisville get?

Lewisville gets 38.9 in of precipitation in an average year, spread over about 90 days with measurable rain. That is more rainy days than 51% of the US.

May is the wettest month, with 4.7 in. August is the driest, with 2.1 in. May has the most rainy days, about 10.

The longest dry spell in the last five years lasted 67 days, to August 10, 2022.

See where Lewisville ranks: rainiest cities in the US, US cities with the most rainy days, rainiest cities in Texas.

Does it snow in Lewisville?

Rarely. The reporting station for Lewisville averages under 0.5 in of snow a season.

The snowiest winter on record is 1977–78, with 17.6 in.

The most recent measurable snow at the station fell on January 25, 2026.

See where Lewisville ranks: snowiest cities in the US.

Lewisville weather by month

Lewisville weather in January

In January, Lewisville averages a high of 57°F and a low of 33°F. It gets 2.6 in of precipitation over about 8 rainy days. The sun is out about 52% of daylight hours. The January record high is 85°F (2006) and the record low is 6°F (1982).

Lewisville weather in February

In February, Lewisville averages a high of 61°F and a low of 37°F. It gets 2.7 in of precipitation over about 8 rainy days. The sun is out about 47% of daylight hours. The February record high is 95°F (1996) and the record low is 4°F (1996).

Lewisville weather in March

In March, Lewisville averages a high of 68°F and a low of 45°F. It gets 3.6 in of precipitation over about 9 rainy days. The sun is out about 45% of daylight hours. The March record high is 96°F (1991) and the record low is 13°F (1980). March is one of the most comfortable months to visit.

Lewisville weather in April

In April, Lewisville averages a high of 76°F and a low of 53°F. It gets 3.5 in of precipitation over about 8 rainy days. The sun is out about 45% of daylight hours. The April record high is 101°F (2006) and the record low is 29°F (2003). April is one of the most comfortable months to visit.

Lewisville weather in May

In May, Lewisville averages a high of 84°F and a low of 62°F. It gets 4.7 in of precipitation over about 10 rainy days. The sun is out about 39% of daylight hours. The May record high is 101°F (1985) and the record low is 37°F (2013).

Lewisville weather in June

In June, Lewisville averages a high of 92°F and a low of 70°F. It gets 3.8 in of precipitation over about 8 rainy days. The sun is out about 55% of daylight hours. The June record high is 109°F (1980) and the record low is 50°F (1988).

Lewisville weather in July

In July, Lewisville averages a high of 96°F and a low of 74°F. It gets 2.3 in of precipitation over about 5 rainy days. The sun is out about 61% of daylight hours. The July record high is 110°F (1998) and the record low is 49°F (2004).

Lewisville weather in August

In August, Lewisville averages a high of 96°F and a low of 73°F. It gets 2.1 in of precipitation over about 6 rainy days. The sun is out about 64% of daylight hours. The August record high is 110°F (2011) and the record low is 55°F (1992).

Lewisville weather in September

In September, Lewisville averages a high of 89°F and a low of 66°F. It gets 3.5 in of precipitation over about 7 rainy days. The sun is out about 66% of daylight hours. The September record high is 109°F (1998) and the record low is 38°F (1995).

Lewisville weather in October

In October, Lewisville averages a high of 79°F and a low of 54°F. It gets 4.5 in of precipitation over about 8 rainy days. The sun is out about 68% of daylight hours. The October record high is 100°F (1977) and the record low is 22°F (1993). October is one of the most comfortable months to visit.

Lewisville weather in November

In November, Lewisville averages a high of 67°F and a low of 44°F. It gets 2.8 in of precipitation over about 7 rainy days. The sun is out about 58% of daylight hours. The November record high is 93°F (2017) and the record low is 17°F (2014). November is one of the most comfortable months to visit.

Lewisville weather in December

In December, Lewisville averages a high of 58°F and a low of 35°F. It gets 2.9 in of precipitation over about 8 rainy days. The sun is out about 53% of daylight hours. The December record high is 91°F (2005) and the record low is -1°F (1989).

Sunshine, humidity and wind in Lewisville

October is the sunniest month in Lewisville, with sunshine about 68% of daylight hours. May is the cloudiest, at 39%. Over the year the sun shines about 54% of daylight hours. Lewisville is sunnier than 72% of the US.

Humidity peaks in May at 68% and is lowest in August at 54%.

Lewisville has about 95 days a year above 90°F. Lewisville is hotter than 91% of the US.

See where Lewisville ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.

First and last freeze in Lewisville

The first fall freeze in Lewisville typically comes around November 14, and the last spring freeze around March 19. That leaves a frost-free growing season of about 240 days.

Lewisville weather records

The hottest temperature on record at the Lewisville station is 110°F, on July 13, 1998. The coldest is -1°F, on December 23, 1989.

The wettest day on record brought 8.3 in of rain, on June 14, 1989.

43 all-time records have been set at the station since 1970.

The annual mean temperature has changed by +0.6°F per decade since 1970.

The best time to visit Lewisville

The most comfortable time to visit is typically March to April and October to November, when daytime highs sit near 73°F.

Winter (December–February) is mild, with average highs around 59°F and lows near 35°F. Snow is possible.

Spring (March–May) is warm, with average highs around 76°F and lows near 53°F.

Summer (June–August) is hot, with average highs around 95°F and lows near 72°F.

Autumn (September–November) is warm, with average highs around 78°F and lows near 54°F.

Lewisville climate questions

How much rain does Lewisville get?

Lewisville gets 38.9 in of precipitation in an average year, over about 90 rainy days.

What is the wettest month in Lewisville?

May is the wettest month in Lewisville, with 4.7 in. August is the driest, with 2.1 in.

How many rainy days does Lewisville have a year?

Lewisville has about 90 days with measurable rain in an average year. May has the most, about 10.

Does it snow in Lewisville?

Rarely. The reporting station for Lewisville averages under 0.5 in of snow a season. The snowiest winter on record is 1977–78, with 17.6 in.

What is the hottest month in Lewisville?

July is the warmest month in Lewisville, with an average high of 96°F.

What is the coldest month in Lewisville?

January is the coldest month in Lewisville, with an average low of 33°F.

What is the record high temperature in Lewisville?

The record high at the Lewisville station is 110°F, set on July 13, 1998. The record low is -1°F, on December 23, 1989.

What is the sunniest month in Lewisville?

October is the sunniest month in Lewisville, with sunshine about 68% of daylight hours. May is the cloudiest.

When is the first frost in Lewisville?

The first fall freeze in Lewisville typically comes around November 14. The last spring freeze is around March 19.

What is the best time to visit Lewisville?

The most comfortable time to visit is typically March to April and October to November, when daytime highs sit near 73°F.