January Weather in Washougal, United States

Last updated: June 24, 2025

In January, the average temperature in Washougal, United States hovers around 4°C (40°F), with a minimum dipping to -12°C (11°F) and a maximum peaking at 15°C (58°F). Expect heavy precipitation during this time, totaling 258 mm (10.1 in) over 17 days. Humidity levels are notably high, averaging 86%, contributing to a cool and damp atmosphere.

January Temperature in Washougal

In January in Washougal, the average temperature is 4°C (40°F). Maximums can reach 15°C (58°F) and minimums can be as low as -12°C (11°F). Be prepared for a wide range of temperatures, and pack accordingly for your travels in Washougal.

January Weather in Washougal: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Washougal, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Washougal, January typically has an average temperature of 4°C (40°F), with highs reaching up to 15°C (58°F) and lows dropping to around -12°C (11°F).

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

January Precipitation in Washougal

In Washougal in January, the total precipitation amount is 258 mm (10.1 in) spread over 17 days.

January Precipitation Trends in Washougal

The chart displays monthly precipitation patterns in Washougal, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Washougal, January typically receives around 258 mm (10.1 inches) of precipitation spread over approximately 17 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Washougal

In Washougal in January humidity is 86%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and travel cumbersome as you navigate through a thick, heavy air that clings to your skin.

January Average Humidity in Washougal

This chart illustrates the average monthly humidity levels in Washougal, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Washougal is approximately 86%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Washougal

In Washougal in January, 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 Washougal, you can visit Hourly UV Index in Washougal.

Maximum UV Index Levels in Washougal for January

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

Data source: Washougal January 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 January Weather in Washougal Compares to Other Months

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

This table compares monthly weather conditions in Washougal, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	258 mm (10.1 inches)	86%	low
February Weather	3°C (38°F)	310 mm (12.2 inches)	87%	moderate
March Weather	6°C (44°F)	199 mm (7.8 inches)	86%	moderate
April Weather	9°C (49°F)	183 mm (7.2 inches)	85%	high
May Weather	13°C (56°F)	97 mm (3.8 inches)	80%	very high
June Weather	16°C (61°F)	83 mm (3.3 inches)	82%	very high
July Weather	19°C (67°F)	11 mm (0.5 inches)	78%	very high
August Weather	20°C (68°F)	15 mm (0.6 inches)	62%	very high
September Weather	16°C (62°F)	114 mm (4.5 inches)	59%	high
October Weather	10°C (51°F)	229 mm (9.0 inches)	78%	moderate
November Weather	7°C (45°F)	276 mm (10.9 inches)	88%	moderate
December Weather	4°C (40°F)	297 mm (11.7 inches)	88%	low