January weather forecastHouston, TX
January
Weather in January
January heralds the start of a new year in Houston, Texas, a time when the city is winding down from the holiday season and starting to experience the full brunt of winter. The month presents a stark contrast to the vibrant summer months, as the city is cloaked in an atmosphere of cool temperatures and foggy mornings. Nevertheless, the relatively mild climate makes January a comfortable month to visit Houston. A notable characteristic is the high relative humidity that stands at 73%, one of the highest throughout the year. The city experiences the lowest daylight hours, with only 10.5 hours per day, an indicator of shorter winter days.Temperature
With average high temperatures of 61.3°F (16.3°C) and lows of 46°F (7.8°C), January is the coldest month.Humidity
The average relative humidity in January is 73%.Rainfall
In Houston, during January, the rain falls for 11.8 days and regularly aggregates up to 2.13" (54mm) of precipitation. Throughout the year, there are 180.5 rainfall days, and 35.35" (898mm) of precipitation is accumulated.Snowfall
Months with snowfall are January and December. January is the last month it regularly snows. During 0.1 snowfall days, in January, Houston aggregates 0.04" (1mm) of snow. In Houston, during the entire year, snow falls for 0.2 days and aggregates up to 0.12" (3mm) of snow.Daylight
The average length of the day in January in Houston is 10h and 29min.On the first day of January, sunrise is at 7:16 am and sunset at 5:33 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:57 pm CST.
Sunshine
In Houston, Texas, the average sunshine in January is 5.3h.UV index
In Houston, the average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The UV index of 4 during January leads to these advisories:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Houston, TX
- Average high temperature in January: 61.3°F
The warmest month (with the highest average high temperature) is August (94.3°F).
The month with the lowest average high temperature is January (61.3°F).
- Average low temperature in January: 46°F
The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (46°F).
Average pressure in January
Houston, 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 (29.93"Hg).
Average wind speed in January
Houston, TX
- Average wind speed in January: 7.7mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is September (5.9mph).
Average humidity in January
Houston, TX
- Average humidity in January: 73%
The month with the highest relative humidity is February (78%).
The months with the lowest relative humidity are August and October (70%).
Average rainfall in January
Houston, TX
- Average rainfall in January: 2.13"
The wettest month (with the highest rainfall) is September (4.49").
The driest month (with the least rainfall) is February (1.77").
Average rainfall days in January
Houston, TX
- Average rainfall days in January: 11.8 days
The month with the highest number of rainy days is September (19.5 days).
The month with the least rainy days is January (11.8 days).
Average snowfall in January
Houston, TX
- Average snowfall in January: 0.04"
The month with the highest snowfall is December (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in January
Houston, TX
- Average snowfall days in January: 0.1 days
The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Houston, TX
- Average daylight in January: 10h and 30min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in January: 5h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in January
Houston, TX
- Average sunshine days in January: 16.3 days
The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is September (7.9 days).
Average UV index in January
Houston, 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
Houston, TX
- Average cloud cover in January: 41
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in January
Houston, 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).
