December Weather in Farmington, United States

Last updated: June 24, 2025

In Farmington, United States, the average temperature in December hovers around -5°C (24°F), with a minimum plunge of -25°C (-14°F) and a maximum reach of 14°C (57°F). The month sees approximately 49 mm (1.9 in) of precipitation over 7 days, all while maintaining a high average humidity of 84%.

December Temperature in Farmington

In December in Farmington, the average temperature is -5°C (24°F). Maximum can reach 14°C (57°F) and minimum can be as low as -25°C (-14°F). Travelers should be prepared for a wide range of temperatures, so packing layers is essential for staying comfortable.

December Weather in Farmington: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Farmington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Farmington, December typically has an average temperature of -5°C (24°F), with highs reaching up to 14°C (57°F) and lows dropping to around -25°C (-14°F).

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

December Precipitation in Farmington

In Farmington in December, the precipitation amount is 49 mm (1.9 in) over the course of 7 days.

December Precipitation Trends in Farmington

The chart displays monthly precipitation patterns in Farmington, 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 Farmington, December typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 7 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 Farmington

In Farmington in December, humidity is 84%. With an average temperature of -5°C (24°F), this humidity feels like an icy blanket wrapped around you, making the air feel even colder and more biting, which can be quite uncomfortable for traveling.

December Average Humidity in Farmington

This chart illustrates the average monthly humidity levels in Farmington, 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 Farmington is approximately 84%, 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 Farmington

In Farmington in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Farmington, you can visit Hourly UV Index in Farmington.

Maximum UV Index Levels in Farmington for December

The chart shows the monthly maximum UV Index (UVI) for Farmington 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 Farmington typically reaches 2, which falls under the low exposure category.

Data source: Farmington 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 Farmington Compares to Other Months

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

This table compares monthly weather conditions in Farmington, 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 (17°F)	30 mm (1.2 inches)	87%	low
February Weather	-8°C (17°F)	36 mm (1.4 inches)	90%	moderate
March Weather	1°C (34°F)	60 mm (2.4 inches)	85%	moderate
April Weather	6°C (44°F)	84 mm (3.3 inches)	84%	high
May Weather	15°C (59°F)	137 mm (5.4 inches)	78%	very high
June Weather	22°C (72°F)	97 mm (3.8 inches)	80%	very high
July Weather	24°C (75°F)	106 mm (4.2 inches)	81%	very high
August Weather	22°C (71°F)	134 mm (5.3 inches)	81%	very high
September Weather	18°C (65°F)	120 mm (4.7 inches)	81%	high
October Weather	9°C (49°F)	92 mm (3.6 inches)	84%	moderate
November Weather	1°C (34°F)	36 mm (1.4 inches)	88%	moderate
December Weather	-5°C (24°F)	49 mm (1.9 inches)	84%	low