December Weather in Gilbert, United States

Last updated: June 24, 2025

In Gilbert, United States, the average temperature in December hovers around 10°C (51°F). Expect a range from a chilly -5°C (23°F) to a warm 26°C (79°F). Precipitation during the month totals approximately 120 mm (4.7 in), typically spread over 10 days, contributing to an average humidity of 87%.

December Temperature in Gilbert

In December in Gilbert, the average temperature is 10°C (51°F). Maximums can reach 26°C (79°F) while minimums can drop as low as -5°C (23°F). This variability means travelers should be prepared for both warm and chilly days.

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

The chart illustrates December temperature patterns in Gilbert, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gilbert, December typically has an average temperature of 10°C (51°F), with highs reaching up to 26°C (79°F) and lows dropping to around -5°C (23°F).

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

December Precipitation in Gilbert

In Gilbert in December, the precipitation amount is 120 mm (4.7 in) spread over a duration of 10 days.

December Precipitation Trends in Gilbert

The chart displays monthly precipitation patterns in Gilbert, 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 Gilbert, December typically receives around 120 mm (4.7 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 Gilbert

In Gilbert in December humidity is 87%. With an average temperature of 10°C (51°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities uncomfortable and sticky, and often requiring frequent breaks to stay hydrated and cool.

December Average Humidity in Gilbert

This chart illustrates the average monthly humidity levels in Gilbert, 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 Gilbert is approximately 87%, 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 Gilbert

In Gilbert 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 Gilbert for better planning.

Maximum UV Index Levels in Gilbert for December

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

Data source: Gilbert 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 Gilbert Compares to Other Months

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

This table compares monthly weather conditions in Gilbert, 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 (48°F)	85 mm (3.4 inches)	86%	moderate
February Weather	11°C (53°F)	113 mm (4.5 inches)	81%	high
March Weather	14°C (57°F)	83 mm (3.2 inches)	81%	very high
April Weather	18°C (64°F)	111 mm (4.4 inches)	79%	very high
May Weather	23°C (73°F)	111 mm (4.4 inches)	75%	extreme
June Weather	26°C (78°F)	100 mm (3.9 inches)	75%	extreme
July Weather	27°C (81°F)	145 mm (5.7 inches)	80%	extreme
August Weather	27°C (80°F)	146 mm (5.8 inches)	81%	extreme
September Weather	25°C (77°F)	89 mm (3.5 inches)	83%	very high
October Weather	20°C (68°F)	78 mm (3.1 inches)	78%	very high
November Weather	13°C (55°F)	74 mm (2.9 inches)	85%	high
December Weather	10°C (51°F)	120 mm (4.7 inches)	87%	moderate