January Weather in Forest Hill, United States

Last updated: June 24, 2025

In January, the average temperature in Forest Hill, United States hovers around 8°C (47°F). Expect temperatures to range from a chilly -12°C (11°F) to a warm 27°C (81°F). During this month, precipitation is moderate, with around 46 mm (1.8 in) over approximately 6 days. Additionally, you can anticipate a humidity level of about 80%, adding a touch of dampness to the air.

January Temperature in Forest Hill

In January in Forest Hill, the weather varies considerably, so it's essential to pack layers to stay comfortable during your travels.

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

The chart illustrates January temperature patterns in Forest Hill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Forest Hill, January typically has an average temperature of 8°C (47°F), with highs reaching up to 27°C (81°F) and lows dropping to around -12°C (11°F).

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

January Precipitation in Forest Hill

In Forest Hill in January, the precipitation amount is 46 mm (1.8 in) over a span of 6 days.

January Precipitation Trends in Forest Hill

The chart displays monthly precipitation patterns in Forest Hill, 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 Hill, January typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 6 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 Forest Hill

In Forest Hill in January, humidity is 80%. With an average temperature of 8°C (47°F), this humidity feels like you're walking through a heavy mist, making your clothes cling to your skin and every step prone to a shiver, which can be quite uncomfortable for traveling.

January Average Humidity in Forest Hill

This chart illustrates the average monthly humidity levels in Forest Hill, 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 Hill is approximately 80%, 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 Hill

In Forest Hill in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Forest Hill for better planning.

Maximum UV Index Levels in Forest Hill for January

The chart shows the monthly maximum UV Index (UVI) for Forest Hill 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 Hill typically reaches 4, which falls under the moderate exposure category.

Data source: Forest Hill 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 Hill Compares to Other Months

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

This table compares monthly weather conditions in Forest Hill, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	46 mm (1.8 inches)	80%	moderate
February Weather	9°C (49°F)	87 mm (3.4 inches)	79%	high
March Weather	16°C (61°F)	95 mm (3.8 inches)	78%	very high
April Weather	18°C (66°F)	99 mm (3.9 inches)	78%	very high
May Weather	24°C (75°F)	149 mm (5.9 inches)	81%	extreme
June Weather	28°C (82°F)	99 mm (3.9 inches)	78%	extreme
July Weather	30°C (86°F)	36 mm (1.4 inches)	73%	extreme
August Weather	29°C (85°F)	88 mm (3.5 inches)	66%	extreme
September Weather	26°C (79°F)	68 mm (2.7 inches)	65%	very high
October Weather	20°C (68°F)	134 mm (5.3 inches)	72%	very high
November Weather	14°C (57°F)	53 mm (2.1 inches)	82%	high
December Weather	11°C (52°F)	51 mm (2.0 inches)	87%	moderate