January Weather in Penn Valley, United States

Last updated: June 24, 2025

In January, the average temperature in Penn Valley, United States hovers around 9°C (48°F), with a potential dip to a chilly -3°C (27°F) and a peak of 22°C (72°F). Expect about 196 mm (7.7 in) of precipitation spread over 11 days, creating a damp atmosphere with an average humidity of 84%. 🌧️

January Temperature in Penn Valley

In January in Penn Valley, the average temperature is 9°C (48°F). Maximum temperatures can reach 22°C (72°F), while minimums can drop as low as -3°C (27°F). This unpredictable range makes it essential for travelers to pack layers for their visit.

January Weather in Penn Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Penn Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Penn Valley, January typically has an average temperature of 9°C (48°F), with highs reaching up to 22°C (72°F) and lows dropping to around -3°C (27°F).

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

January Precipitation in Penn Valley

In Penn Valley, in January, the total precipitation amount is 196 mm (7.7 in) spread over 11 days.

January Precipitation Trends in Penn Valley

The chart displays monthly precipitation patterns in Penn Valley, 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 Penn Valley, January typically receives around 196 mm (7.7 inches) of precipitation spread over approximately 11 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 Penn Valley

In Penn Valley in January, humidity is 84%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that envelops you, making it essential to dress in layers and stay active, as the moisture in the air can quickly lead to discomfort while traveling.

January Average Humidity in Penn Valley

This chart illustrates the average monthly humidity levels in Penn Valley, 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 Penn Valley is approximately 84%, 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 Penn Valley

In Penn Valley 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 Penn Valley, you can check the information here.

Maximum UV Index Levels in Penn Valley for January

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

Data source: Penn Valley 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 Penn Valley Compares to Other Months

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

This table compares monthly weather conditions in Penn Valley, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	196 mm (7.7 inches)	84%	moderate
February Weather	9°C (49°F)	202 mm (8.0 inches)	84%	moderate
March Weather	11°C (52°F)	191 mm (7.5 inches)	83%	high
April Weather	15°C (59°F)	89 mm (3.5 inches)	81%	very high
May Weather	19°C (66°F)	48 mm (1.9 inches)	74%	very high
June Weather	24°C (76°F)	9 mm (0.3 inches)	64%	extreme
July Weather	27°C (81°F)	1 mm (0.0 inches)	44%	extreme
August Weather	26°C (79°F)	1 mm (0.0 inches)	36%	very high
September Weather	23°C (73°F)	12 mm (0.5 inches)	44%	very high
October Weather	17°C (63°F)	62 mm (2.4 inches)	65%	high
November Weather	12°C (53°F)	115 mm (4.5 inches)	84%	moderate
December Weather	8°C (47°F)	170 mm (6.7 inches)	83%	moderate