Houston
Texas, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Houston, TX

A beautiful park in Root square overlooking the central business district of Houston, Texas
A beautiful park in Root square overlooking the central business district of Houston, Texas
January is usually the coldest month of the year in Houston, yet the temperatures rarely touch the freezing mark. The average temperatures are in the mild 43°F (6.1°C) to 63°F (17.2°C) range with a few nights touching 35.1°F (1.7°C).
January is also the cloudiest month as the daily sunshine lasts only for 4.5 hours during the 10-hour long days. The coldest period around the New Year week has comfortable daily temperatures above 50°F (10°C). Expect rainfall to the tune of 3.4" (86.4mm) in January, and carry an umbrella or rain jacket during outdoor activities.

What is the coldest month in Houston?

January is the coldest month, with an average high-temperature of 63°F (17.2°C) and an average low-temperature of 43.2°F (6.2°C).

What is the temperature in January in Houston?

In January, in Houston, Texas, the average high-temperature is 63°F (17.2°C), and the average low-temperature is 43.2°F (6.2°C).

What is the average humidity in January in Houston?

In Houston, the average relative humidity in January is 74.7%.

How much does it rain in Houston in January?

In January, the rain falls for 9.6 days. Throughout January, 3.4" (85.9mm) of precipitation is accumulated.

How many hours of daylight does Houston have in January?

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

What is the month with the least sunshine in Houston?

With an average of 4.6h of sunshine, January has the least sunshine of the year in Houston.

How long on average sun shines in January in Houston?

In January, the average sunshine is 4.6h.

When is the lowest UV index in Houston?

January and December, with an average maximum UV index of 4, are months with the lowest UV index in Houston, Texas.

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 medium health risk from unprotected exposure to the UV radiation.
Average temperature in January - Houston, TX
  • Average high temperature in January: 62.9°F

The warmest month (with the highest average high temperature) is August (94.5°F).
The month with the lowest average high temperature is January (62.9°F).

  • Average low temperature in January: 43.2°F

The month with the highest average low temperature is July (75.1°F).
The coldest month (with the lowest average low temperature) is January (43.2°F).

Average humidity in January - Houston, TX
  • Average humidity in January: 74.7%

The month with the highest relative humidity is September (76.8%).
The month with the lowest relative humidity is March (72.7%).

Average rainfall in January - Houston, TX
  • Average rainfall in January: 3.4"

The wettest month (with the highest rainfall) is June (5.9").
The driest month (with the lowest rainfall) is February (3.2").

Average rainfall days in January - Houston, TX
  • Average rainfall days in January: 9.6 days

The month with the highest number of rainy days is June (10.6 days).
The month with the lowest number of rainy days is April (6.8 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 shortest days is December (Average daylight: 10.3h).

  • Average sunshine in January: 4.6h

The month with most sunshine is July (Average sunshine: 9.5h).
The month with least sunshine is January (Average sunshine: 4.6h).

Average UV index in January - Houston, TX
  • Average UV index in January: 4

Months with the highest UV index are June and July (UV index 11).
Months with the lowest UV index are January and December (UV index 4).