January weather forecast
Houston, TX

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A beautiful park in Root square overlooking the central business district of Houston, Texas, USA
A beautiful park in Root square overlooking the central business district of Houston, Texas, USA

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

Houston's coldest weather arrives in January, when temperatures average a high of 61.3°F and a low of 46°F.

Humidity

In Houston, the average relative humidity in January is 73%.

Rainfall

In Houston, in January, during 11.8 rainfall days, 2.13" of precipitation is typically accumulated. Throughout the year, in Houston, there are 180.5 rainfall days, and 35.35" of precipitation is accumulated.

Snowfall

Months with snowfall in Houston are January and December. January is the last month it regularly snows in Houston. During 0.1 snowfall days, in January, Houston aggregates 0.04" of snow. In Houston, during the entire year, snow falls for 0.2 days and aggregates up to 0.12" of snow.

Daylight

In January, the average length of the day in Houston, Texas, is 10h and 29min.
On the first day of January in Houston, 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 5:58 pm CST.

Sunshine

In January, the average sunshine in Houston, Texas, is 5.3h.

UV index

The average daily maximum UV index in January is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 4 during January translates into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. It's recommended to limit sun exposure when its radiation is at its peak during midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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FAQ

What month is the coldest in Houston?

January is the month that records the lowest temperatures in Houston, Texas, with averages ranging from a high of 61.3°F to a low of 46°F.

What are January temperatures in Houston?

The high-temperature, in January, in Houston, is 61.3°F, while the low-temperature averages to 46°F.

What is the average humidity in January in Houston?

In January, the average relative humidity in Houston, Texas, is 73%.

How many days does it rain in January in Houston?

In Houston, Texas, during January, the rain falls for 11.8 days and regularly aggregates up to 2.13" of precipitation.

What is the last month it snows in Houston?

January is the last month it regularly snows in Houston. During 0.1 snowfall days, in January, Houston aggregates 0.04" of snow.

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

In January, the average day length in Houston, Texas, is 10h and 29min.

What time are sunrise and sunset in January in Houston?

In January, on the first day of the month, sunrise is at 7:16 am and sunset at 5:33 pm. On the last day of the month, in Houston, Texas, sunrise is at 7:11 am and sunset at 5:58 pm CST.

How many hours of sunshine does Houston have in January?

In Houston, Texas, the average sunshine duration in January is 5.3h.

What is the UV index reading in January in Houston?

In January, the average daily maximum UV index in Houston, Texas, is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Houston, TX

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).

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Average pressure in January
Houston, TX

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).

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Average wind speed in January
Houston, TX

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).

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Average humidity in January
Houston, TX

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%).

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Average rainfall in January
Houston, TX

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").

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Average rainfall days in January
Houston, TX

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).

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Average snowfall in January
Houston, TX

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").

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Average snowfall days in January
Houston, TX

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).

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

Average daylight in January / Average sunshine in January - Houston, TX
  • Average daylight in January: 10h and 3min

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 2min

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).

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Average sunshine days in January
Houston, TX

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).

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Average UV index in January
Houston, TX

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).

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Average cloud cover in January
Houston, TX

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).

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Average visibility in January
Houston, TX

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).

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Houston, Texas, USA

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