January weather forecastLewisville, TX
January
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
Lewisville's temperature records reveal January as the coldest month, marked by average highs of 54.1°F (12.3°C) and lows of 38.5°F (3.6°C).Humidity
In January, the average relative humidity 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
Months with snowfall are January through March, November and December. In Lewisville, during January, snow falls for 0.6 days and regularly aggregates up to 0.08" (2mm) of snow. Throughout the year, there are 2.3 snowfall days, and 0.94" (24mm) of snow is accumulated.Daylight
The average length of the day in January 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
In Lewisville, the average sunshine in January is 5.9h.UV index
The average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: A typical high UV index of 4 in January suggests the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Stay sun-safe with clothing that is both closely woven and worn loosely. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in January /
Average sunshine in January
Lewisville, TX
- Average daylight in January: 10h and 18min
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
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 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).
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).
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).
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).
