December weather forecast
Thornton, TX

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Weather in December

The first month of the winter, December, is still a refreshing month in Thornton, Texas, with an average temperature ranging between max 57.7°F (14.3°C) and min 42.8°F (6°C).

Temperature

With the arrival of December, Thornton experiences a modest decline in average high-temperatures, transitioning from a refreshing 65.5°F (18.6°C) in November to a moderate 57.7°F (14.3°C). Throughout December, the average low-temperature in Thornton, Texas, dips to a frosty 42.8°F (6°C).

Humidity

In December, the average relative humidity in Thornton is 75%.

Rainfall

In December, in Thornton, the rain falls for 11.8 days. Throughout December, 2.83" (72mm) of precipitation is accumulated. Throughout the year, there are 150.9 rainfall days, and 32.99" (838mm) of precipitation is accumulated.

Snowfall

In Thornton, snow does not fall in April through December.

Daylight

December has the shortest days of the year in Thornton, Texas, with an average of 10h and 6min of daylight.
On the first day of December in Thornton, sunrise is at 7:08 am and sunset at 5:23 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:33 pm CST.

Sunshine

December has the least sunshine of the year in Thornton, with an average of 5h of sunshine.

UV index

The months with the lowest UV index in Thornton are January and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: In December, the UV index of 3 transforms into the following advice:
Ensure safety - Sun damage prevention is strongly urged. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What is the average December temperature in Thornton?

In Thornton, in December, the average high-temperature is 57.7°F (14.3°C), and the average low-temperature is 42.8°F (6°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 100.4°F (38°C).

What is the average humidity in December in Thornton?

In Thornton, the average relative humidity in December is 75%.

How much does it rain in Thornton in December?

In December, in Thornton, the rain falls for 11.8 days. Throughout December, 2.83" (72mm) of precipitation is accumulated.

When it does not snow in Thornton?

In Thornton, Texas, snow does not fall in April through December.

Does it snow in Thornton in December?

In Thornton, Texas, in December, it doesn't snow. In January, it regularly snows.

What is the month with the shortest days in Thornton?

The month with the shortest days in Thornton, Texas, is December, with an average of 10h and 6min of daylight.

How many hours of daylight does Thornton have in December?

The average day length in December in Thornton is 10h and 8min.

When is the sunrise / sunset in December in Thornton?

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 5:23 pm. On the last day of the month, in Thornton, sunrise is at 7:25 am and sunset at 5:33 pm CST.

What is the month with the least sunshine in Thornton?

The month with the least sunshine in Thornton, Texas, is December, with an average of 5h of sunshine.

How many hours of sunshine does Thornton have in December?

The average sunshine duration in December in Thornton, Texas, is 5h.

When is the lowest UV index in Thornton?

The months with the lowest UV index in Thornton are January and December, with an average maximum UV index of 3.

How high is the UV index in December in Thornton?

In December, the average daily maximum UV index in Thornton is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
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
Thornton, TX

Average temperature in December - Thornton, TX
  • Average high temperature in December: 57.7°F

The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (56.1°F).

  • Average low temperature in December: 42.8°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (40.3°F).

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Average pressure in December
Thornton, TX

Average pressure in December - Thornton, TX
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in December
Thornton, TX

Average wind speed in December - Thornton, TX
  • Average wind speed in December: 8.9mph

The windiest month (with the highest average wind speed) is March (10mph).
The calmest month (with the lowest average wind speed) is September (6.5mph).

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Average humidity in December
Thornton, TX

Average humidity in December - Thornton, TX
  • Average humidity in December: 75%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (62%).

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Average rainfall in December
Thornton, TX

Average rainfall in December - Thornton, TX
  • Average rainfall in December: 2.83"

The wettest month (with the highest rainfall) is October (3.94").
The driest month (with the least rainfall) is February (1.97").

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Average rainfall days in December
Thornton, TX

Average rainfall days in December - Thornton, TX
  • Average rainfall days in December: 11.8 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (8.6 days).

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Average snowfall in December
Thornton, TX

Average snowfall in December - Thornton, TX
  • Average snowfall in December: 0"

The month with the highest snowfall is February (0.51").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in December
Thornton, TX

Average snowfall days in December - Thornton, TX
  • Average snowfall days in December: 0.2 days

The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight in December /
Average sunshine in December
Thornton, TX

Average daylight in December / Average sunshine in December - Thornton, TX
  • Average daylight in December: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in December: 5h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

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Average sunshine days in December
Thornton, TX

Average sunshine days in December - Thornton, TX
  • Average sunshine days in December: 17.4 days

The month with the most sunshine days is January (20.2 days).
The month with the least sunshine days is April (12.5 days).

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Average UV index in December
Thornton, TX

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

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in December
Thornton, TX

Average cloud cover in December - Thornton, TX
  • Average cloud cover in December: 44

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in December
Thornton, TX

Average visibility in December - Thornton, 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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Thornton, Texas, USA

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