January weather forecast
Lewisville, TX

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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. The onset of the new year is a milder introduction to the Texan climate, as February starts to usher in warmer temperatures.

Temperature

January is the coldest month of the year, registering average temperatures as high as 54.1°F (12.3°C) and as low as 38.5°F (3.6°C).

Humidity

In Lewisville, the average relative humidity in January is 63%.

Rainfall

The months with the least rainfall are January and February Rain falls for 6.6 days and accumulates 1.57" (40mm) of rain.

Snowfall

January through March, November and December are months with snowfall. In January, in Lewisville, Texas, it is snowing for 0.6 days. Throughout January, 0.08" (2mm) of snow is accumulated. In Lewisville, during the entire year, snow falls for 2.3 days and aggregates up to 0.94" (24mm) of snow.

Daylight

In January, the average length of the day in Lewisville is 10h and 16min.
On the first day of the month, sunrise is at 7:30 am and sunset at 5:31 pm. On the last day of January, sunrise is at 7:23 am and sunset at 5:58 pm CST.

Sunshine

The average sunshine in January is 5.9h.

UV index

The average daily maximum UV index in January in Lewisville is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: An average maximum UV index of 4 in January leads to these recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. To protect against the Sun's most potent rays, avoid direct exposure around midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

What is the coldest month in Lewisville?

Lewisville's coldest month, January, generally records average temperatures ranging from a high of 54.1°F (12.3°C) to a low of 38.5°F (3.6°C).

What are the temperatures in Lewisville in January?

In January, the average high-temperature and low-temperature in Lewisville, Texas, are 54.1°F (12.3°C) and 38.5°F (3.6°C) respectively.

What is the average humidity in January in Lewisville?

The average relative humidity in January in Lewisville is 63%.

What is the driest month in Lewisville?

The months with the least rainfall are January and February Rain falls for 6.6 days and accumulates 1.57" (40mm) of rain.

How much does it rain in Lewisville in January?

In Lewisville, Texas, in January, it is raining for 6.6 days, with typically 1.57" (40mm) of accumulated precipitation.

How much does it snow in Lewisville in January?

In Lewisville, in January, snow falls for 0.6 days, with typically accumulated 0.08" (2mm) of snow.

What is the average length of the day in January in Lewisville?

In Lewisville, the average day length in January is 10h and 16min.

What time are sunrise and sunset in January in Lewisville?

On the first day of January in Lewisville, Texas, sunrise is at 7:30 am and sunset at 5:31 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:58 pm CST.

How long on average sun shines in January in Lewisville?

The average sunshine duration in January is 5.9h.

What is the UV index intensity in January in Lewisville?

In January, the average daily maximum UV index in Lewisville is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Lewisville, TX

Average temperature in January - Lewisville, TX
  • Average high temperature in January: 54.1°F

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).

  • Average low temperature in January: 38.5°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).

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Average pressure in January
Lewisville, TX

Average pressure in January - Lewisville, TX
  • Average pressure in January: 30.16"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).

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Average wind speed in January
Lewisville, TX

Average wind speed in January - Lewisville, TX
  • Average wind speed in January: 9.1mph

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).

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Average humidity in January
Lewisville, TX

Average humidity in January - Lewisville, TX
  • Average humidity in January: 63%

The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (53%).

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Average rainfall in January
Lewisville, TX

Average rainfall in January - Lewisville, TX
  • Average rainfall in January: 1.57"

The wettest month (with the highest rainfall) is October (3.74").
The driest months (with the least rainfall) are January and February (1.57").

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Average rainfall days in January
Lewisville, TX

Average rainfall days in January - Lewisville, TX
  • Average rainfall days in January: 6.6 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).

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Average snowfall in January
Lewisville, TX

Average snowfall in January - Lewisville, TX
  • Average snowfall in January: 0.08"

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").

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Average snowfall days in January
Lewisville, TX

Average snowfall days in January - Lewisville, TX
  • Average snowfall days in January: 0.6 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).

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Average daylight in January /
Average sunshine in January
Lewisville, TX

Average daylight in January / Average sunshine in January - Lewisville, TX
  • Average daylight in January: 10h and 2min

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 5min

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).

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Average sunshine days in January
Lewisville, TX

Average sunshine days in January - Lewisville, TX
  • Average sunshine days in January: 23.2 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).

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Average UV index in January
Lewisville, TX

Average UV index in January - Lewisville, TX
  • Average UV index in January: 4

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).

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Average cloud cover in January
Lewisville, TX

Average cloud cover in January - Lewisville, TX
  • Average cloud cover in January: 30

The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in January
Lewisville, TX

Average visibility in January - Lewisville, TX
  • Average visibility in January: 6mi

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).

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Lewisville, Texas, USA

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