December Weather in Walnut Grove, United States

Last updated: June 24, 2025

In December, the average temperature in Walnut Grove, United States hovers around 10°C (50°F). Expect a chilly minimum of -1°C (30°F), while temperatures can occasionally rise to a pleasant 24°C (76°F). The month sees about 95 mm (3.7 in) of precipitation spread over 9 days, contributing to an average humidity of 83%.

December Temperature in Walnut Grove

In December in Walnut Grove, the average temperature is 10°C (50°F), with maximums reaching 24°C (76°F) and minimums dropping as low as -1°C (30°F). This variety in temperatures means travelers should pack accordingly to prepare for both warm and chilly conditions.

December Weather in Walnut Grove: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Walnut Grove, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Walnut Grove, December typically has an average temperature of 10°C (50°F), with highs reaching up to 24°C (76°F) and lows dropping to around -1°C (30°F).

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

December Precipitation in Walnut Grove

In Walnut Grove in December, the precipitation amount is 95 mm (3.7 in) over the course of 9 days.

December Precipitation Trends in Walnut Grove

The chart displays monthly precipitation patterns in Walnut Grove, 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 Walnut Grove, December typically receives around 95 mm (3.7 inches) of precipitation spread over approximately 9 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 Walnut Grove

In Walnut Grove in December, humidity is 83%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that clings to your skin, making outdoor exploration less comfortable and prompting visitors to seek cozy indoor activities.

December Average Humidity in Walnut Grove

This chart illustrates the average monthly humidity levels in Walnut Grove, 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 Walnut Grove is approximately 83%, 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 Walnut Grove

In Walnut Grove in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Walnut Grove, you can check the information here.

Maximum UV Index Levels in Walnut Grove for December

The chart shows the monthly maximum UV Index (UVI) for Walnut Grove 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 Walnut Grove typically reaches 3, which falls under the moderate exposure category.

Data source: Walnut Grove 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 Walnut Grove Compares to Other Months

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

This table compares monthly weather conditions in Walnut Grove, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	116 mm (4.6 inches)	84%	moderate
February Weather	12°C (53°F)	100 mm (3.9 inches)	84%	moderate
March Weather	14°C (57°F)	83 mm (3.3 inches)	83%	high
April Weather	17°C (63°F)	39 mm (1.5 inches)	81%	very high
May Weather	20°C (68°F)	17 mm (0.7 inches)	74%	very high
June Weather	23°C (74°F)	2 mm (0.1 inches)	64%	extreme
July Weather	24°C (75°F)	0 mm (0.0 inches)	44%	extreme
August Weather	24°C (75°F)	0 mm (0.0 inches)	36%	very high
September Weather	23°C (73°F)	1 mm (0.0 inches)	44%	very high
October Weather	19°C (66°F)	36 mm (1.4 inches)	65%	high
November Weather	13°C (56°F)	46 mm (1.8 inches)	84%	moderate
December Weather	10°C (50°F)	95 mm (3.7 inches)	83%	moderate