December weather forecast
Garrison, TX

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Weather in December

December, the first month of the winter in Garrison, is still a mild month, with temperature in the range of an average low of 42.8°F (6°C) and an average high of 57.4°F (14.1°C).

Temperature

The transition to December results in a modest reduction in average high-temperature, moving from a comfortable 65.3°F (18.5°C) in November to a mild 57.4°F (14.1°C). Garrison experiences an average temperature drop to a frosty 42.8°F (6°C) during December nights.

Humidity

The average relative humidity in December is 81%.

Rainfall

In Garrison, during December, the rain falls for 12.6 days and regularly aggregates up to 3.03" (77mm) of precipitation. In Garrison, during the entire year, the rain falls for 160.4 days and collects up to 35.83" (910mm) of precipitation.

Snowfall

Months with snowfall are January through March, September and December. December is the first month it typically snows. Throughout December, in the average 0.6 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 2.6 snowfall days, and 0.79" (20mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 10h and 6min of daylight.
On the first day of December, sunrise is at 7:00 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:24 pm CST.

Sunshine

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

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: During December, 3 as the daily maximum UV index converts into the following advice:
Take necessary precautions - Suggestions to elude sunburn are provided. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.

Frequently asked questions

What is the temperature in December?

The average high-temperature and low-temperature during December are 57.4°F (14.1°C) and 42.8°F (6°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in September is evaluated at 104°F (40°C).

What is the average humidity in December?

The average relative humidity in December is 81%.

How many days does it rain in December in Garrison?

In Garrison, in December, during 12.6 rainfall days, 3.03" (77mm) of precipitation is typically accumulated.

When does it start snowing?

December is the first month it typically snows. Throughout December, in the average 0.6 snowfall days, it receives 0.12" (3mm) of snow.

What is the month with the shortest days?

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

How many hours of daylight does Garrison have in December?

The average day length in December in Garrison is 10h and 7min.

When are sunrise and sunset in December?

On the first day of December in Garrison, sunrise is at 7:00 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:24 pm CST.

What is the month with the least sunshine?

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

How many hours of sunshine does Garrison have in December?

The average sunshine duration in December is 5h.

When is the lowest UV index?

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

What is the UV index intensity in December?

In Garrison, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Garrison, TX

Average temperature in December - Garrison, TX
  • Average high temperature in December: 57.4°F

The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (55.8°F).

  • Average low temperature in December: 42.8°F

The month with the highest average low temperature is August (73.2°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).

Average pressure in December
Garrison, TX

Average pressure in December - Garrison, TX
  • Average pressure in December: 30.12"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).

Average wind speed in December
Garrison, TX

Average wind speed in December - Garrison, TX
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.8mph).

Average humidity in December
Garrison, TX

Average humidity in December - Garrison, TX
  • Average humidity in December: 81%

The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is August (70%).

Average rainfall in December
Garrison, TX

Average rainfall in December - Garrison, TX
  • Average rainfall in December: 3.03"

The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is November (2.44").

Average rainfall days in December
Garrison, TX

Average rainfall days in December - Garrison, TX
  • Average rainfall days in December: 12.6 days

The month with the highest number of rainy days is March (15.5 days).
The month with the least rainy days is November (10.2 days).

Average snowfall in December
Garrison, TX

Average snowfall in December - Garrison, TX
  • Average snowfall in December: 0.12"

The month with the highest snowfall is January (0.39").
The months with the least snowfall are April, May, June, July, August, October and November (0").

Average snowfall days in December
Garrison, TX

Average snowfall days in December - Garrison, TX
  • Average snowfall days in December: 0.6 days

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

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

Average daylight in December / Average sunshine in December - Garrison, 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 18min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in December
Garrison, TX

Average sunshine days in December - Garrison, TX
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is February (12.3 days).

Average UV index in December
Garrison, TX

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

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

Average cloud cover in December
Garrison, TX

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

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in December
Garrison, TX

Average visibility in December - Garrison, TX
  • Average visibility in December: 5mi

The months with the highest visibility are June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, September and December (5mi).

Garrison, Texas, USA

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