January weather forecast and climate
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
January, the same as December, is another enjoyable winter month in Houston, Texas, with average temperature varying between 46°F (7.8°C) and 61.3°F (16.3°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 is 73%.

Rainfall

In January, the rain falls for 11.8 days. Throughout January, 2.13" (54mm) of precipitation is accumulated. Throughout the year, there are 180.5 rainfall days, and 35.35" (898mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day is 10.5h.

Sunshine

The average sunshine in Houston is 5.3h.

UV index

In Houston, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the coldest month in Houston?

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

What is the temperature in January in Houston?

The average high-temperature, in January, is 61.3°F (16.3°C), while the average low-temperature is 46°F (7.8°C).

What is the average humidity in January in Houston?

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

How many days does it rain in January in Houston?

In Houston, in January, during 11.8 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.

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" (1mm) of snow.

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

In January, the average length of the day in Houston is 10.5h.

How many hours of sunshine does Houston have in January?

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

What is the UV index reading in January in Houston?

In Houston, Texas, the average daily maximum UV index in January is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.
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"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.93").

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%).
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").
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

Months with the highest number of snowfall days are January and December (0.1 days).
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: 10.5h

The month with the longest days is June (Average daylight: 14h).
The month with the shortest days is December (Average daylight: 10.3h).

  • Average sunshine in January: 5.3h

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is December (Average sunshine: 4.8h).

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

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

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).