December Weather in Sierra Vista Southeast, United States

Last updated: June 24, 2025

In December, the average temperature in Sierra Vista Southeast, United States hovers around 9°C (48°F), offering a chilly but invigorating atmosphere. Expect temperatures to fluctuate between a brisk -6°C (22°F) at night and a balmy 23°C (74°F) during the day. With an average precipitation amount of 22 mm (0.9 in) spread across about 4 days, it's wise to keep an umbrella handy. The air is quite humid, with an average of 81% humidity, adding a touch of dampness to the cool air.

December Temperature in Sierra Vista Southeast

In December in Sierra Vista Southeast, the average temperature is 9°C (48°F). Maximum temperatures can reach 23°C (74°F), while minimums can drop as low as -6°C (22°F). It's essential to pack layers to prepare for the varying temperatures during your travels.

December Weather in Sierra Vista Southeast: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sierra Vista Southeast, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sierra Vista Southeast, December typically has an average temperature of 9°C (48°F), with highs reaching up to 23°C (74°F) and lows dropping to around -6°C (22°F).

Data source: Temperature data for Sierra Vista Southeast generated using information from the Copernicus Climate Change Service.

December Precipitation in Sierra Vista Southeast

In Sierra Vista Southeast in December, the precipitation amount is 22 mm (0.9 in) over a duration of 4 days.

December Precipitation Trends in Sierra Vista Southeast

The chart displays monthly precipitation patterns in Sierra Vista Southeast, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Sierra Vista Southeast, December typically receives around 22 mm (0.9 inches) of precipitation spread over approximately 4 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Sierra Vista Southeast

In Sierra Vista Southeast in December, humidity is 81%. With an average temperature of 9°C (48°F), this humidity feels like a chilly, damp embrace that can make outdoor activities less enjoyable and may require extra layers to stay comfortable while traveling.

December Average Humidity in Sierra Vista Southeast

This chart illustrates the average monthly humidity levels in Sierra Vista Southeast, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Sierra Vista Southeast is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sierra Vista Southeast

In Sierra Vista Southeast in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Sierra Vista Southeast.

Maximum UV Index Levels in Sierra Vista Southeast for December

The chart shows the monthly maximum UV Index (UVI) for Sierra Vista Southeast in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Sierra Vista Southeast typically reaches 5, which falls under the moderate exposure category.

Data source: Sierra Vista Southeast December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How December Weather in Sierra Vista Southeast Compares to Other Months

Weather in Sierra Vista Southeast varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sierra Vista Southeast, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sierra Vista Southeast, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	20 mm (0.8 inches)	74%	moderate
February Weather	9°C (49°F)	25 mm (1.0 inches)	71%	high
March Weather	13°C (55°F)	17 mm (0.7 inches)	60%	very high
April Weather	17°C (64°F)	4 mm (0.2 inches)	43%	extreme
May Weather	21°C (71°F)	3 mm (0.1 inches)	32%	extreme
June Weather	27°C (81°F)	8 mm (0.3 inches)	28%	extreme
July Weather	26°C (79°F)	89 mm (3.5 inches)	38%	extreme
August Weather	25°C (78°F)	71 mm (2.8 inches)	60%	extreme
September Weather	23°C (74°F)	36 mm (1.4 inches)	72%	extreme
October Weather	18°C (65°F)	18 mm (0.7 inches)	66%	very high
November Weather	14°C (57°F)	27 mm (1.1 inches)	74%	high
December Weather	9°C (48°F)	22 mm (0.9 inches)	81%	moderate