January Weather in Forest, United States

Last updated: June 24, 2025

In January, the average temperature in Forest, United States hovers around 4°C (39°F). Expect chilly days, with minimums plummeting to -14°C (6°F) and warm peaks reaching up to 22°C (72°F). During this month, anticipate approximately 72 mm (2.8 in) of precipitation spread over 8 days, contributing to an average humidity of 84%. Stay prepared for a mix of cold and damp conditions!

January Temperature in Forest

In January in Forest, the average temperature is 4°C (39°F). Maximum temperatures can reach 22°C (72°F), while the minimum can drop to as low as -14°C (6°F). Travelers should be prepared for a wide range of temperatures and dress in layers for comfort.

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

The chart illustrates January temperature patterns in Forest, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Forest, January typically has an average temperature of 4°C (39°F), with highs reaching up to 22°C (72°F) and lows dropping to around -14°C (6°F).

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

January Precipitation in Forest

In Forest in January, the precipitation amount is 72 mm (2.8 in) over the course of 8 days.

January Precipitation Trends in Forest

The chart displays monthly precipitation patterns in Forest, 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 Forest, January typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 8 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 Forest

In Forest in January, humidity is 84%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making outdoor excursions uncomfortable and demanding more layers than you anticipate while traveling.

January Average Humidity in Forest

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

In Forest 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 Forest, you can check the information here.

Maximum UV Index Levels in Forest for January

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

Data source: Forest 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 Forest Compares to Other Months

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

This table compares monthly weather conditions in Forest, 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 (39°F)	72 mm (2.8 inches)	84%	moderate
February Weather	7°C (44°F)	112 mm (4.4 inches)	84%	high
March Weather	10°C (50°F)	69 mm (2.7 inches)	84%	high
April Weather	15°C (59°F)	128 mm (5.0 inches)	82%	very high
May Weather	20°C (68°F)	113 mm (4.5 inches)	82%	very high
June Weather	24°C (75°F)	101 mm (4.0 inches)	83%	extreme
July Weather	27°C (80°F)	58 mm (2.3 inches)	79%	very high
August Weather	25°C (78°F)	95 mm (3.8 inches)	77%	very high
September Weather	22°C (72°F)	108 mm (4.2 inches)	75%	very high
October Weather	17°C (63°F)	113 mm (4.5 inches)	81%	high
November Weather	9°C (48°F)	78 mm (3.1 inches)	87%	moderate
December Weather	6°C (43°F)	103 mm (4.1 inches)	85%	moderate