December 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 December

December illuminates Houston with festive lights and celebrations. The bee-hive of activity, coupled with the vibrant decorations, adds a magical touch to the city's wintry landscape. As the final month of the year, December invites residents and visitors alike to savor the joyful atmosphere that envelops the city. Coats and mittens become a common sight as the temperature drops further to as low as 49.6°F. Furthermore, a small amount of snowfall, 0.08", can be observed, adding to the authentic winter experience in Houston in December.

Temperature

December signifies a minor drop in average high-temperature, transitioning from a pleasant 70.3°F in November to an enjoyable 63°F. The mean low-temperature during December nights in Houston is a chilly 49.6°F.

Humidity

The average relative humidity in December is 76%.

Rainfall

In December, in Houston, the rain falls for 13.9 days. Throughout December, 2.52" of precipitation is accumulated. In Houston, during the entire year, the rain falls for 180.5 days and collects up to 35.35" of precipitation.

Snowfall

Months with snowfall are January and December. The month with the most snowfall is December, when snow falls for 0.1 days and typically aggregates up to 0.08" of snow.

Daylight

December has the shortest days of the year, with an average of 10h and 18min of daylight.
On the first day of December, sunrise is at 6:59 am and sunset at 5:21 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 5:32 pm CST.

Sunshine

The month with the least sunshine in Houston is December, with an average of 4.8h of sunshine.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 3 during December translates into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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FAQ

What is the temperature in December in Houston?

December temperatures in Houston, Texas, vary between a high-temperature of 63°F and a low-temperature of 49.6°F. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in October is calculated to be 84.2°F.

What is the average humidity in December in Houston?

The average relative humidity in December is 76%.

How many days does it rain in December in Houston?

In December, the rain falls for 13.9 days. Throughout December, 2.52" of precipitation is accumulated.

When does it snow the most in Houston?

December is the month with the most snowfall in Houston. Snow falls for 0.1 days and accumulates 0.08" of snow.

When does it start snowing in Houston?

December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.08" of snow.

What is the month with the shortest days in Houston?

The month with the shortest days in Houston is December, with an average of 10h and 18min of daylight.

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

In December, the average day length is 10h and 16min.

When is the sunrise / sunset in December in Houston?

In December, on the first day of the month, sunrise is at 6:59 am and sunset at 5:21 pm. On the last day of the month, in Houston, sunrise is at 7:16 am and sunset at 5:32 pm CST.

What is the month with the least sunshine in Houston?

With an average of 4.8h of sunshine, December has the least sunshine of the year in Houston, Texas.

How many hours of sunshine does Houston have in December?

In December, the average sunshine duration in Houston, Texas, is 4.8h.

What is the month with the lowest UV index in Houston?

The month with the lowest UV index in Houston, Texas, is December, with an average maximum UV index of 3.

What is the UV index reading in December in Houston?

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

Average temperature in December - Houston, TX
  • Average high temperature in December: 63°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 December: 49.6°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 December
Houston, TX

Average pressure in December - Houston, TX
  • Average pressure in December: 30.11"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 December
Houston, TX

Average wind speed in December - Houston, TX
  • Average wind speed in December: 7.6mph

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 December
Houston, TX

Average humidity in December - Houston, TX
  • Average humidity in December: 76%

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 December
Houston, TX

Average rainfall in December - Houston, TX
  • Average rainfall in December: 2.52"

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 December
Houston, TX

Average rainfall days in December - Houston, TX
  • Average rainfall days in December: 13.9 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 December
Houston, TX

Average snowfall in December - Houston, TX
  • Average snowfall in December: 0.08"

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 December
Houston, TX

Average snowfall days in December - Houston, TX
  • Average snowfall days in December: 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 December /
Average sunshine in December
Houston, TX

Average daylight in December / Average sunshine in December - Houston, TX
  • Average daylight in December: 10h and 2min

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 December: 4h and 5min

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 December
Houston, TX

Average sunshine days in December - Houston, TX
  • Average sunshine days in December: 14.6 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 December
Houston, TX

Average UV index in December - Houston, TX
  • Average UV index in December: 3

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 December
Houston, TX

Average cloud cover in December - Houston, TX
  • Average cloud cover in December: 49

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 December
Houston, TX

Average visibility in December - Houston, TX
  • Average visibility in December: 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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