December weather forecast
San Patricio, NM

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Weather in December

December, the first month of the winter in San Patricio, is also a frosty month, with temperature in the range of an average high of 45.3°F (7.4°C) and an average low of 27.9°F (-2.3°C).

Temperature

San Patricio experiences its coldest period in January and December, averaging a high-temperature of 45.3°F (7.4°C).

Humidity

The months with the highest humidity are September and December, with an average relative humidity of 57%.

Rainfall

In San Patricio, in December, it is raining for 4.1 days, with typically 0.63" (16mm) of accumulated precipitation. Throughout the year, in San Patricio, there are 103.5 rainfall days, and 18.03" (458mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in San Patricio. December is the month with the most snowfall in San Patricio. Snow falls for 4.9 days and accumulates 3.46" (88mm) of snow.

Daylight

With an average of 10h and 0min of daylight, December has the shortest days of the year in San Patricio.
On the first day of December in San Patricio, New Mexico, sunrise is at 6:47 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:04 pm MST.

Sunshine

The month with the least sunshine is December, with an average of 6.9h of sunshine.

UV index

The months with the lowest UV index in San Patricio are January, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 2 during December translates into these guidelines:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest in San Patricio?

San Patricio witnesses its lowest temperatures in January and December, reaching an average of 45.3°F (7.4°C).

What are the temperatures in San Patricio in December?

The high-temperature during December is 45.3°F (7.4°C) and the low-temperature is 27.9°F (-2.3°C).

What are the most humid months in San Patricio?

The months with the highest humidity are September and December, with an average relative humidity of 57%.

What is the average humidity in December in San Patricio?

The average relative humidity in December in San Patricio is 57%.

How much does it rain in San Patricio in December?

In December, the rain falls for 4.1 days. Throughout December, 0.63" (16mm) of precipitation is accumulated.

When does it snow the most in San Patricio?

The month with the most snowfall is December, when snow falls for 4.9 days and typically aggregates up to 3.46" (88mm) of snow.

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

In San Patricio, New Mexico, during December, snow falls for 4.9 days and regularly aggregates up to 3.46" (88mm) of snow.

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

December has the shortest days of the year in San Patricio, New Mexico, with an average of 10h and 0min of daylight.

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

In San Patricio, the average day length in December is 9h and 59min.

When is the sunrise / sunset in December in San Patricio?

In December, on the first day of the month, sunrise is at 6:47 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:04 pm MST.

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

December has the least sunshine of the year in San Patricio, with an average of 6.9h of sunshine.

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

In San Patricio, the average sunshine duration in December is 6.9h.

When is the lowest UV index in San Patricio?

The months with the lowest UV index are January, November and December, with an average maximum UV index of 2.

What is the UV index reading in December in San Patricio?

In San Patricio, New Mexico, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to 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
San Patricio, NM

Average temperature in December - San Patricio, NM
  • Average high temperature in December: 45.3°F

The warmest month (with the highest average high temperature) is June (81.7°F).
The months with the lowest average high temperature are January and December (45.3°F).

  • Average low temperature in December: 27.9°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average pressure in December
San Patricio, NM

Average pressure in December - San Patricio, NM
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in December
San Patricio, NM

Average wind speed in December - San Patricio, NM
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average humidity in December
San Patricio, NM

Average humidity in December - San Patricio, NM
  • Average humidity in December: 57%

The months with the highest relative humidity are September and December (57%).
The month with the lowest relative humidity is April (30%).

Average rainfall in December
San Patricio, NM

Average rainfall in December - San Patricio, NM
  • Average rainfall in December: 0.63"

The wettest month (with the highest rainfall) is August (4.41").
The driest month (with the least rainfall) is January (0.35").

Average rainfall days in December
San Patricio, NM

Average rainfall days in December - San Patricio, NM
  • Average rainfall days in December: 4.1 days

The months with the highest number of rainy days are July and August (20.3 days).
The month with the least rainy days is February (2.1 days).

Average snowfall in December
San Patricio, NM

Average snowfall in December - San Patricio, NM
  • Average snowfall in December: 3.46"

The month with the highest snowfall is December (3.46").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
San Patricio, NM

Average snowfall days in December - San Patricio, NM
  • Average snowfall days in December: 4.9 days

The month with the highest number of snowfall days is December (4.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
San Patricio, NM

Average daylight in December / Average sunshine in December - San Patricio, NM
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 6h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

Average sunshine days in December
San Patricio, NM

Average sunshine days in December - San Patricio, NM
  • Average sunshine days in December: 23.9 days

The month with the most sunshine days is November (25.9 days).
The month with the least sunshine days is July (6.5 days).

Average UV index in December
San Patricio, NM

Average UV index in December - San Patricio, NM
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).

Average cloud cover in December
San Patricio, NM

Average cloud cover in December - San Patricio, NM
  • Average cloud cover in December: 22

The months with the most cloud cover are July and December (Cloud cover 22).
The months with the least cloud cover are April, May, June, October and November (Cloud cover 14).

Average visibility in December
San Patricio, NM

Average visibility in December - San Patricio, NM
  • 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).

San Patricio, New Mexico, USA

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