December Weather in Gray, United States

Last updated: June 24, 2025

In Gray, United States, the average temperature in December hovers around 11°C (51°F). Temperatures can swing from a frosty -4°C (25°F) to a warm 25°C (78°F). During this month, expect about 121 mm (4.8 in) of precipitation over 10 days, contributing to an average humidity level of 89%. Perfect for cozying up or enjoying the lush, vibrant scenery!

December Temperature in Gray

In December in Gray, the average temperature is 11°C (51°F). Maximum temperatures can reach 25°C (78°F), while minimums can dip as low as -4°C (25°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warmth and coolness.

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

The chart illustrates December temperature patterns in Gray, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gray, December typically has an average temperature of 11°C (51°F), with highs reaching up to 25°C (78°F) and lows dropping to around -4°C (25°F).

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

December Precipitation in Gray

In Gray in December, the precipitation amount is 121 mm (4.8 in) spread over a period of 10 days.

December Precipitation Trends in Gray

The chart displays monthly precipitation patterns in Gray, 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 Gray, December typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 10 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 Gray

In Gray in December, humidity is 89%. With an average temperature of 11°C (51°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and every breath a little more laborious, creating a challenging environment for travelers.

December Average Humidity in Gray

This chart illustrates the average monthly humidity levels in Gray, 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 Gray is approximately 89%, 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 Gray

In Gray 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 Gray for better planning.

Maximum UV Index Levels in Gray for December

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

Data source: Gray 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 Gray Compares to Other Months

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

This table compares monthly weather conditions in Gray, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	107 mm (4.2 inches)	86%	moderate
February Weather	12°C (55°F)	128 mm (5.1 inches)	84%	high
March Weather	15°C (59°F)	81 mm (3.2 inches)	83%	very high
April Weather	18°C (65°F)	102 mm (4.0 inches)	81%	very high
May Weather	23°C (74°F)	92 mm (3.6 inches)	81%	extreme
June Weather	26°C (79°F)	122 mm (4.8 inches)	81%	extreme
July Weather	27°C (82°F)	100 mm (3.9 inches)	83%	extreme
August Weather	27°C (81°F)	112 mm (4.4 inches)	81%	very high
September Weather	25°C (78°F)	100 mm (4.0 inches)	82%	very high
October Weather	21°C (69°F)	103 mm (4.0 inches)	78%	very high
November Weather	13°C (56°F)	80 mm (3.1 inches)	86%	high
December Weather	11°C (51°F)	121 mm (4.8 inches)	89%	moderate