Climate and monthly weather forecastLewisville, TX
Climate and monthly weather forecast
The climate of Lewisville
Lewisville, Texas resides in the humid subtropical zone of the Köppen climate classification, thus experiences no dry season. The geographical position of the city results in a variety of temperatures, humidity levels, and rainfall throughout the year.In terms of temperature, the city experiences an average monthly high ranging from 54.1°F (12.3°C) in January to a peak of 96.3°F (35.7°C) in August. Conversely, average monthly lows occur in January, at 38.5°F (3.6°C), and climb steadily to July and August's 76.6°F (24.8°C) and 76.8°F (24.9°C) respectively. Temperature fluctuations are therefore noticeable but expected, given the city's geographical position.
Relative humidity levels start from 63% in January, escalating to 71% in May, before gradually dipping to 53% in August, the lowest recorded for the year. Rainfall in Lewisville paints an intriguing pattern, starting from 1.57" (40mm) in January and February, peaking at 3.74" (95mm) in October, and then trailing off to 1.81" (46mm) in December.
Visitors and residents can expect to see a relatively modest amount of snowfall in the city, with only January and November experiencing occasional snow days, 0.6 and 0.3 respectively. The highest recorded snowfall is a mere 0.63" (16mm) in February, with November and December measures hovering around 0.08 and 0.04" (1mm) respectively.
The Best Time to Visit Lewisville
March through May provides a blend of pleasant temperatures and an acceptable level of rainfall, making it a good time to visit Lewisville. During this period, temperatures range from 67.1°F (19.5°C) to 82.2°F (27.9°C) at the high end, and 50.4°F (10.2°C) to 64.8°F (18.2°C) on the lower scale. Rainfall measures from 2.44" (62mm) to 3.62" (92mm) monthly, which, while not minimal, is offset by the enjoyable temperatures.The Worst Time to Visit Lewisville
Lewisville reaches its peak temperatures in the months of July and August, with highs of 95.2°F (35.1°C) and 96.3°F (35.7°C) respectively. Combined with relatively high humidity levels during these months, the city becomes less optimal for visitors, especially those less accustomed to warmer climates.Spring Weather in Lewisville
Spring in Lewisville is characterized by gradually rising temperatures, from a high of 67.1°F (19.5°C) in March to 82.2°F (27.9°C) in May. Nightly lows similarly increase from 50.4°F (10.2°C) to 64.8°F (18.2°C). Humidity levels during spring hover close to the 70% mark, making the season fairly tolerable. Rainfall is somewhat significant, peaking at 3.62" (92mm) in May, which may explain the relatively high humidity levels.Summer Weather in Lewisville
Summers are hot in Lewisville, with average high temperatures climbing to 91.2°F (32.9°C) in June and soaring to 96.3°F (35.7°C) in August. Lows don’t offer much respite either, averaging between 73.9°F (23.3°C) to 76.8°F (24.9°C). Despite the high temperatures, relative humidity tends to decrease in the summer months, and keeps a steady rainfall, which measures from 2.01" (51mm) to 2.76" (70mm).Autumn Weather in Lewisville
A noticeable drop in temperatures marks the arrival of autumn in Lewisville. September's high temperature of 88°F (31.1°C) steadily declines to 64.4°F (18°C) by November. Nightly lows similarly show a downward trend from 70.7°F (21.5°C) to 48.6°F (9.2°C). Humidity levels, on the other hand, rise during the autumn months due in part to October’s maximum average rainfall of 3.74" (95mm).Winter Weather in Lewisville
Winters in Lewisville are relatively mild, with high temperatures ranging from 64.4°F (18°C) in December to 54.1°F (12.3°C) in January. The lows follow the same pattern starting from 48.6°F (9.2°C) in December to 38.5°F (3.6°C) in January. Relative humidity increases during these months, while both rainfall and snowfall are infrequent and relatively minimal.Weather in January
January is a cooler month in Lewisville, Texas, with temperatures beginning to gradually increase from winter lows. Rainfall remains fairly constant with an average of 1.57" (40mm) falling across approximately seven days. Total daylight hours hover around 10.3 hours, and visibility remains clear at an average distance of six miles. Weather in January »Weather in February
February is distinguishable for its slightly increasing temperatures, as compared to January, while maintaining an equivalent average rainfall. The wind speed starts showing an increment during this month, with wind gusts reaching up to 15.2mph (24.5km/h). Weather in February »Weather in March
March further nudges the thermal mercury higher as the city of Lewisville begins to experience the zest of spring. It's quite a wet month with an average rainfall of 2.8" (71mm), making it notably humid. The daylight hours extend to around 12, providing more daytime activities for residents. Weather in March »Weather in April
Similarities in temperature and humidity define the weather between March and April. April witnesses strong wind gusts, up to 15.7mph (25.3km/h), offering a breezy, refreshing spell to the locals. As the month progresses, prolonged sunshine increases the average UV index. Weather in April »Weather in May
May marks the beginning of summer in Lewisville, characterized by considerably warmer days compared to the preceding spring months. Notably high rainfall of 3.62" (92mm) coupled with a high relative humidity of 71%, brings about a humid temperate climate. Weather in May »Weather in June
June is a true representation of sultry Texas summers with temperatures reaching a scorching daily average high of 91.2°F (32.9°C). Sun-soaked days are common, averaging a daily sunshine duration of around 10.2 hours. While some clouds might cast their shadows occasionally, expectations of frequent and long sunny days are typically met in June. Weather in June »Weather in July
July is the peak of summer in Lewisville, indicating the highest temperatures of the year with an average high of 95.2°F (35.1°C). The number of sunshine days reaches its zenith during this month, resulting in clear, sunny days. Weather in July »Weather in August
August sees a slight drop in temperatures from the scorching heat of July, yet still stands out as one of the hottest months of the year. Conversely, humidity drops to its lowest levels of the year at 53%, giving residents a brief respite. Weather in August »Weather in September
September ushers in autumn in the city of Lewisville, bringing milder temperatures than the summer highs of August. Rainfall increases slightly to 2.64" (67mm), compensating for the reduced humidity through the later moments of summer. Weather in September »Weather in October
October builds on the autumnal climate established in September, presenting more balanced temperatures and humidity levels. Notably, a significant increase in rainfall up to 3.74" (95mm) marks October as a relatively wet month. Weather in October »Weather in November
November is the harbinger of winter in Lewisville, as the average high temperature drops to a cooler 64.4°F (18°C). The wind speeds see an incremental rise, completing the transition from the gentler autumnal winds. Sparse and sporadic snowfall might occur, creating a picturesque overlay in the city. Weather in November »Weather in December
December, being the final month of the year, ushers in the chill of winter in Lewisville. The city observes short daylight of 10 hours, in contrast to the long summer days. Snowfall, while minimal, adds to the festive winter charm of the season. Weather in December »Updated: Aug 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Lewisville, January is known for its average lowest temperatures, reaching a high of 54.1°F (12.3°C) and a low of 38.5°F (3.6°C).
January and February are months with the least rain when the rain falls for 6.6 days and typically aggregates up to 1.57" (40mm) of rain.
In Lewisville, during the entire year, the rain falls for 132.1 days and collects up to 29.09" (739mm) of precipitation.
Months with snowfall are January through March, November and December.
In Lewisville, during the entire year, snow falls for 2.3 days and aggregates up to 0.94" (24mm) of snow.
February is the month with the most snowfall. Snow falls for 1.1 days and accumulates 0.63" (16mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
April through October are months without snowfall.
The most humid month is May, with an average relative humidity of 71%.
May through August, with an average maximum UV index of 7, are months with the highest UV index.
The month with the longest days is June, with an average of 14h and 18min of daylight.
The months with the most sunshine are July and August, with an average of 11h of sunshine.
August, with its high-temperature average of 96.3°F (35.7°C) and a low-temperature average of 76.8°F (24.9°C), is the warmest month.
The least humid month is August, with an average relative humidity of 53%.
The month with the most rainfall is October, when the rain falls for 11.1 days and typically aggregates up to 3.74" (95mm) of precipitation.
The month with the shortest days is December, with an average of 10h and 0min of daylight.
The month with the least sunshine is December, with an average of 5.6h of sunshine.
The month with the lowest UV index is December, with an average maximum UV index of 3.
Average temperature
Lewisville, TX
The warmest month (with the highest average high temperature) is August (96.3°F).
The month with the lowest average high temperature is January (54.1°F).
The month with the highest average low temperature is August (76.8°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure
Lewisville, TX
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.92"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Lewisville, TX
- Average wind speed in January:
9.1mph - Average wind speed in February:
9.8mph - Average wind speed in March:
10.1mph - Average wind speed in April:
10.1mph - Average wind speed in May:
9.2mph - Average wind speed in June:
8.1mph
- Average wind speed in July:
7.3mph - Average wind speed in August:
7mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8.3mph - Average wind speed in November:
8.8mph - Average wind speed in December:
8.6mph
The windiest months (with the highest average wind speed) are March and April (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity
Lewisville, TX
The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (53%).
Average rainfall
Lewisville, TX
- Average rainfall in January:
1.57" - Average rainfall in February:
1.57" - Average rainfall in March:
2.8" - Average rainfall in April:
2.44" - Average rainfall in May:
3.62" - Average rainfall in June:
2.76"
- Average rainfall in July:
2.01" - Average rainfall in August:
2.17" - Average rainfall in September:
2.64" - Average rainfall in October:
3.74" - Average rainfall in November:
1.97" - Average rainfall in December:
1.81"
The wettest month (with the highest rainfall) is October (3.74").
The driest months (with the least rainfall) are January and February (1.57").
Average rainfall days
Lewisville, TX
- Average rainfall days in January:
6.6 days - Average rainfall days in February:
9.4 days - Average rainfall days in March:
13.1 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
11.7 days
- Average rainfall days in July:
11.5 days - Average rainfall days in August:
11.3 days - Average rainfall days in September:
14 days - Average rainfall days in October:
11.1 days - Average rainfall days in November:
8.3 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (6.6 days).
Average snowfall
Lewisville, TX
The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Lewisville, TX
- Average snowfall days in January:
0.6 days - Average snowfall days in February:
1.1 days - Average snowfall days in March:
0.1 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.3 days - Average snowfall days in December:
0.2 days
The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Lewisville, TX
- Average daylight in January:
10h and 18min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 18min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 18min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 30min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
5h and 54min - Average sunshine in February:
6h and 48min - Average sunshine in March:
6h and 54min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 42min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
11h and 0min - Average sunshine in September:
8h and 30min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 54min - Average sunshine in December:
5h and 36min
The months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days
Lewisville, TX
- Average sunshine days in January:
23.2 days - Average sunshine days in February:
16.5 days - Average sunshine days in March:
16.4 days - Average sunshine days in April:
16.5 days - Average sunshine days in May:
15.3 days - Average sunshine days in June:
15.9 days
- Average sunshine days in July:
17.7 days - Average sunshine days in August:
17.9 days - Average sunshine days in September:
14.9 days - Average sunshine days in October:
18.2 days - Average sunshine days in November:
20.1 days - Average sunshine days in December:
20.5 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is September (14.9 days).
Average UV index
Lewisville, TX
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
Lewisville, TX
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility
Lewisville, TX
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
