December Weather in Tonasket, United States

Last updated: June 24, 2025

In December, the average temperature in Tonasket, United States hovers around -3°C (27°F), making for a chilly month. You can expect a minimum plunge to -24°C (-11°F), while the mercury can rise to a maximum of 13°C (56°F). With 77 mm (3.0 in) of precipitation spread over 13 days, it's wise to prepare for some wet weather. Average humidity during this time is notably high at 93%, contributing to a crisp and frosty atmosphere.

December Temperature in Tonasket

In December in Tonasket, the average temperature is -3°C (27°F), with maximums reaching 13°C (56°F) and minimums dropping as low as -24°C (-11°F). Be prepared for cold weather and dress in layers to stay warm while exploring.

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

The chart illustrates December temperature patterns in Tonasket, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tonasket, December typically has an average temperature of -3°C (27°F), with highs reaching up to 13°C (56°F) and lows dropping to around -24°C (-11°F).

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

December Precipitation in Tonasket

In Tonasket in December, the precipitation amount is 77 mm (3.0 in) spread over a total of 13 days.

December Precipitation Trends in Tonasket

The chart displays monthly precipitation patterns in Tonasket, 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 Tonasket, December typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Tonasket

In Tonasket in December humidity is 93%. With an average temperature of -3°C (27°F), this humidity feels like a damp chill that seeps through your clothes, making travel uncomfortable and forcing you to bundle up against the biting cold while navigating the wet conditions.

December Average Humidity in Tonasket

This chart illustrates the average monthly humidity levels in Tonasket, 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 Tonasket is approximately 93%, 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 Tonasket

In Tonasket 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 Tonasket, you can visit Hourly UV Index in Tonasket.

Maximum UV Index Levels in Tonasket for December

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

Data source: Tonasket 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 Tonasket Compares to Other Months

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

This table compares monthly weather conditions in Tonasket, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	78 mm (3.1 inches)	90%	low
February Weather	-4°C (25°F)	63 mm (2.5 inches)	91%	moderate
March Weather	2°C (36°F)	63 mm (2.5 inches)	89%	moderate
April Weather	6°C (44°F)	54 mm (2.1 inches)	85%	high
May Weather	12°C (54°F)	43 mm (1.7 inches)	82%	very high
June Weather	17°C (62°F)	24 mm (0.9 inches)	81%	very high
July Weather	21°C (70°F)	5 mm (0.2 inches)	84%	very high
August Weather	20°C (68°F)	9 mm (0.4 inches)	75%	very high
September Weather	14°C (57°F)	30 mm (1.2 inches)	74%	high
October Weather	6°C (43°F)	54 mm (2.1 inches)	85%	moderate
November Weather	1°C (34°F)	70 mm (2.8 inches)	88%	moderate
December Weather	-3°C (27°F)	77 mm (3.0 inches)	93%	low