January weather forecast
Houston, TX

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, like December, in Houston, Texas, is another enjoyable winter month, with an average temperature fluctuating between 61.3°F (16.3°C) and 46°F (7.8°C).

Temperature

The coldest month is January, with an average high-temperature of 61.3°F (16.3°C) and an average low-temperature of 46°F (7.8°C).

Humidity

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

Rainfall

In Houston, in January, during 11.8 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. Throughout the year, in Houston, there are 180.5 rainfall days, and 35.35" (898mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Houston are January and December. January is the last month it regularly snows in Houston, Texas. During 0.1 snowfall days, in January, Houston aggregates 0.04" (1mm) of snow. Throughout the year, there are 0.2 snowfall days, and 0.12" (3mm) of snow is accumulated.

Daylight

In January, the average length of the day 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 5:58 pm CST.

Sunshine

The average sunshine in January in Houston 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 ordinary individuals.
Note: The average daily UV index of 4 in January transform into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Houston?

With an average high-temperature of 61.3°F (16.3°C) and an average low-temperature of 46°F (7.8°C), January is the coldest month.

What is the average humidity in January in Houston?

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

How many days does it rain in January in Houston?

In Houston, Texas, in January, it is raining for 11.8 days, with typically 2.13" (54mm) of accumulated precipitation.

What is the last month it snows in Houston?

January is the last month it regularly snows in Houston, Texas. During 0.1 snowfall days, in January, Houston aggregates 0.04" (1mm) of snow.

How many hours of daylight does Houston have in January?

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

When is the sunrise / sunset in January in Houston?

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.

How long on average sun shines in January in Houston?

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

What is the UV index reading in January in Houston?

In Houston, the average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
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 29min

The month with the longest days is June (Average daylight: 14h and 2min).
The month with the shortest days is December (Average daylight: 10h and 16min).

  • 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).

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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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