January Weather in Forestville, United States

Last updated: June 24, 2025

In January, the average temperature in Forestville, United States hovers around 1°C (34°F). Expect a chilly climate with minimum lows plummeting to -21°C (-6°F) and occasional highs reaching up to 21°C (69°F). During this month, rainfall measures approximately 83 mm (3.3 in), typically spread over 10 days, creating a rather damp atmosphere with an average humidity of 88%.

January Temperature in Forestville

In January in Forestville, the average temperature is 1°C (34°F). Maximum temperatures can reach 21°C (69°F), while minimums can dip as low as -21°C (-6°F). Be sure to pack layers to stay comfortable during your travels!

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

The chart illustrates January temperature patterns in Forestville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Forestville, January typically has an average temperature of 1°C (34°F), with highs reaching up to 21°C (69°F) and lows dropping to around -21°C (-6°F).

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

January Precipitation in Forestville

In Forestville in January, the total precipitation amount is 83 mm (3.3 in) over a span of 10 days.

January Precipitation Trends in Forestville

The chart displays monthly precipitation patterns in Forestville, 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 Forestville, January typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 10 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 Forestville

In Forestville in January humidity is 88%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making travel feel damp and brisk, where every breath carries a crisp bite, and the air clings to your skin, urging you to seek warmth and comfort.

January Average Humidity in Forestville

This chart illustrates the average monthly humidity levels in Forestville, 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 Forestville is approximately 88%, 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 Forestville

In Forestville 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 Forestville, you can check the information here.

Maximum UV Index Levels in Forestville for January

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

Data source: Forestville 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 Forestville Compares to Other Months

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

This table compares monthly weather conditions in Forestville, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	83 mm (3.3 inches)	88%	moderate
February Weather	3°C (38°F)	116 mm (4.6 inches)	88%	moderate
March Weather	7°C (46°F)	139 mm (5.5 inches)	87%	high
April Weather	12°C (55°F)	134 mm (5.3 inches)	85%	very high
May Weather	19°C (66°F)	136 mm (5.4 inches)	81%	very high
June Weather	23°C (73°F)	149 mm (5.9 inches)	82%	very high
July Weather	25°C (77°F)	117 mm (4.6 inches)	81%	very high
August Weather	24°C (75°F)	89 mm (3.5 inches)	73%	very high
September Weather	21°C (70°F)	95 mm (3.7 inches)	73%	very high
October Weather	15°C (59°F)	99 mm (3.9 inches)	78%	high
November Weather	7°C (44°F)	98 mm (3.9 inches)	89%	moderate
December Weather	4°C (39°F)	119 mm (4.7 inches)	87%	moderate