January Weather in Yreka, United States

Last updated: June 24, 2025

In January, the average temperature in Yreka, United States hovers around 2°C (36°F), with a minimum dip to -18°C (0°F) and a pleasant maximum of 15°C (59°F). Expect about 121 mm (4.8 in) of precipitation, spread over 12 days, and an average humidity level of 86%. Prepare for a month that balances chill with occasional warmth and moisture!

January Temperature in Yreka

In January in Yreka, the average temperature is 2°C (36°F), with a maximum that can reach 15°C (59°F) and a minimum that can dip as low as -18°C (0°F). Travelers should be prepared for a chilly experience, with significant temperature fluctuations from day to night.

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

The chart illustrates January temperature patterns in Yreka, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yreka, January typically has an average temperature of 2°C (36°F), with highs reaching up to 15°C (59°F) and lows dropping to around -18°C (0°F).

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

January Precipitation in Yreka

In Yreka in January, the precipitation amount reaches 121 mm (4.8 in) over the course of 12 days.

January Precipitation Trends in Yreka

The chart displays monthly precipitation patterns in Yreka, 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 Yreka, January typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 12 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Yreka

In Yreka in January, humidity is 86%. With an average temperature of 2°C (36°F), this humidity feels like a biting chill that clings to your skin, making outdoor exploration uncomfortable and dampening any enthusiasm for travel.

January Average Humidity in Yreka

This chart illustrates the average monthly humidity levels in Yreka, 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 Yreka 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 Yreka

In Yreka in January, 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 Yreka, you can check the information here.

Maximum UV Index Levels in Yreka for January

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

Data source: Yreka 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 Yreka Compares to Other Months

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

This table compares monthly weather conditions in Yreka, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	121 mm (4.8 inches)	86%	moderate
February Weather	3°C (37°F)	118 mm (4.7 inches)	85%	moderate
March Weather	5°C (42°F)	91 mm (3.6 inches)	85%	high
April Weather	9°C (48°F)	61 mm (2.4 inches)	82%	very high
May Weather	13°C (55°F)	49 mm (1.9 inches)	81%	extreme
June Weather	18°C (64°F)	16 mm (0.6 inches)	79%	extreme
July Weather	22°C (72°F)	5 mm (0.2 inches)	70%	extreme
August Weather	21°C (71°F)	5 mm (0.2 inches)	60%	very high
September Weather	17°C (62°F)	20 mm (0.8 inches)	62%	very high
October Weather	10°C (51°F)	38 mm (1.5 inches)	72%	high
November Weather	5°C (41°F)	72 mm (2.8 inches)	87%	moderate
December Weather	2°C (35°F)	92 mm (3.6 inches)	86%	moderate