December Weather in Gallup, United States

Last updated: June 24, 2025

In December, the average temperature in Gallup, United States hovers around 1°C (33°F). Expect chilly conditions, with the minimum temperature dropping to -17°C (3°F) and highs reaching up to 15°C (60°F). Over the course of the month, anticipate about 24 mm (1.0 in) of precipitation spread across 5 days. With an average humidity level of 82%, the air tends to feel quite crisp.

December Temperature in Gallup

In December in Gallup, the average temperature is 1°C (33°F). Maximum temperatures can reach 15°C (60°F), while minimums can dip as low as -17°C (3°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to enjoy their visit.

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

The chart illustrates December temperature patterns in Gallup, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gallup, December typically has an average temperature of 1°C (33°F), with highs reaching up to 15°C (60°F) and lows dropping to around -17°C (3°F).

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

December Precipitation in Gallup

In Gallup in December, the precipitation amount is 24 mm (1.0 in) spread over the course of 5 days.

December Precipitation Trends in Gallup

The chart displays monthly precipitation patterns in Gallup, 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 Gallup, December typically receives around 24 mm (1.0 inches) of precipitation spread over approximately 5 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 Gallup

In Gallup in December humidity is 82%. With an average temperature of 1°C (33°F), this humidity feels like a biting chill that dampens your clothes and makes each breath a bit heavier, making travel uncomfortable and necessitating extra layers for warmth and protection against the moisture.

December Average Humidity in Gallup

This chart illustrates the average monthly humidity levels in Gallup, 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 Gallup is approximately 82%, 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 Gallup

In Gallup in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Gallup for better planning.

Maximum UV Index Levels in Gallup for December

The chart shows the monthly maximum UV Index (UVI) for Gallup 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 Gallup typically reaches 4, which falls under the moderate exposure category.

Data source: Gallup 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 Gallup Compares to Other Months

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

This table compares monthly weather conditions in Gallup, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (31°F)	27 mm (1.1 inches)	81%	moderate
February Weather	2°C (35°F)	31 mm (1.2 inches)	83%	high
March Weather	6°C (43°F)	32 mm (1.3 inches)	71%	very high
April Weather	12°C (53°F)	15 mm (0.6 inches)	61%	extreme
May Weather	16°C (61°F)	15 mm (0.6 inches)	48%	extreme
June Weather	23°C (73°F)	5 mm (0.2 inches)	36%	extreme
July Weather	24°C (75°F)	38 mm (1.5 inches)	37%	extreme
August Weather	23°C (74°F)	12 mm (0.5 inches)	46%	extreme
September Weather	19°C (67°F)	25 mm (1.0 inches)	62%	extreme
October Weather	12°C (54°F)	21 mm (0.8 inches)	74%	very high
November Weather	6°C (44°F)	14 mm (0.5 inches)	82%	high
December Weather	1°C (33°F)	24 mm (1.0 inches)	82%	moderate