December weather forecast
San Angelo, TX

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Weather in December

From the mild autumn, December dips into proper winter weather. Conditions remain relatively cool compared to the scorching summer with high temperatures averaging round 58.6°F (14.8°C). Being the final month of the year, December puts a chilly end to the year in San Angelo, Texas. Despite the shorter days and longer nights, December paints a splendid picture of a classic, comfortable winter. As Christmas approaches, residents of San Angelo wrap up the year with holiday festivities, under the cool, twinkling winter sky.

Temperature

In San Angelo, Texas, the lowest average temperatures are observed in December, with a high of 58.6°F (14.8°C) and a low of 40.8°F (4.9°C).

Humidity

The average relative humidity in December is 56%.

Rainfall

In San Angelo, in December, during 5.2 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. Throughout the year, in San Angelo, there are 89.7 rainfall days, and 15.39" (391mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. In December, it is snowing for 0.8 days. Throughout December, 0.39" (10mm) of snow is accumulated. Throughout the year, there are 3.3 snowfall days, and 1.65" (42mm) of snow is accumulated.

Daylight

December has the shortest days of the year in San Angelo, with an average of 10h and 6min of daylight.
On the first day of December, sunrise is at 7:23 am and sunset at 5:38 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:49 pm CST.

Sunshine

December has the least sunshine of the year in San Angelo, Texas, with an average of 6.4h 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 moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: In December, the maximum UV index of 3 suggests this advice:
Be vigilant - A duty to shield skin and eyes from injury exists. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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Frequently asked questions

What month is the coldest in San Angelo?

The coldest period is December, when temperatures fluctuate between an average high of 58.6°F (14.8°C) and a low of 40.8°F (4.9°C).

What is the average December temperature in San Angelo?

The high-temperature, in December, in San Angelo, records 58.6°F (14.8°C), while the low-temperature is 40.8°F (4.9°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 93.2°F (34°C).

What is the average humidity in December in San Angelo?

In December, the average relative humidity in San Angelo, Texas, is 56%.

How much does it rain in San Angelo in December?

In December, in San Angelo, the rain falls for 5.2 days. Throughout December, 0.75" (19mm) of precipitation is accumulated.

How many days does it snow in December in San Angelo?

In San Angelo, Texas, in December, during 0.8 snowfall days, 0.39" (10mm) of snow is typically accumulated.

What is the month with the shortest days in San Angelo?

December has the shortest days of the year in San Angelo, with an average of 10h and 6min of daylight.

How many hours of daylight does San Angelo have in December?

In December, the average day length in San Angelo, Texas, is 10h and 8min.

When are sunrise and sunset in December in San Angelo?

On the first day of December in San Angelo, Texas, sunrise is at 7:23 am and sunset at 5:38 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:49 pm CST.

What is the month with the least sunshine in San Angelo?

The month with the least sunshine in San Angelo is December, with an average of 6.4h of sunshine.

How many hours of sunshine does San Angelo have in December?

In December, the average sunshine duration in San Angelo, Texas, is 6.4h.

When is the lowest UV index in San Angelo?

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

What is the UV index intensity in December in San Angelo?

In San Angelo, Texas, the average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
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
San Angelo, TX

Average temperature in December - San Angelo, TX
  • Average high temperature in December: 58.6°F

The warmest month (with the highest average high temperature) is August (95.7°F).
The month with the lowest average high temperature is December (58.6°F).

  • Average low temperature in December: 40.8°F

The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).

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Average pressure in December
San Angelo, TX

Average pressure in December - San Angelo, TX
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).

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Average wind speed in December
San Angelo, TX

Average wind speed in December - San Angelo, TX
  • Average wind speed in December: 10.3mph

The windiest month (with the highest average wind speed) is April (13.5mph).
The calmest month (with the lowest average wind speed) is September (9.4mph).

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Average humidity in December
San Angelo, TX

Average humidity in December - San Angelo, TX
  • Average humidity in December: 56%

The month with the highest relative humidity is November (58%).
The month with the lowest relative humidity is August (46%).

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Average rainfall in December
San Angelo, TX

Average rainfall in December - San Angelo, TX
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is October (2.4").
The driest month (with the least rainfall) is January (0.59").

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Average rainfall days in December
San Angelo, TX

Average rainfall days in December - San Angelo, TX
  • Average rainfall days in December: 5.2 days

The month with the highest number of rainy days is May (11.6 days).
The month with the least rainy days is January (4.1 days).

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Average snowfall in December
San Angelo, TX

Average snowfall in December - San Angelo, TX
  • Average snowfall in December: 0.39"

The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
San Angelo, TX

Average snowfall days in December - San Angelo, TX
  • Average snowfall days in December: 0.8 days

The month with the highest number of snowfall days is February (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
San Angelo, TX

Average daylight in December / Average sunshine in December - San Angelo, 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: 6h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).

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Average sunshine days in December
San Angelo, TX

Average sunshine days in December - San Angelo, TX
  • Average sunshine days in December: 24 days

The month with the most sunshine days is January (26 days).
The month with the least sunshine days is May (16.8 days).

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Average UV index in December
San Angelo, TX

Average UV index in December - San Angelo, TX
  • Average UV index in December: 3

The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in December
San Angelo, TX

Average cloud cover in December - San Angelo, TX
  • Average cloud cover in December: 26

The months with the most cloud cover are March and September (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 17).

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Average visibility in December
San Angelo, TX

Average visibility in December - San Angelo, 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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San Angelo, Texas, USA

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