January Weather in Hartwell, United States

Last updated: June 24, 2025

In Hartwell, United States, the average temperature in January hovers around 8°C (46°F). Expect a wide temperature range with a minimum of -9°C (16°F) and a maximum of 25°C (77°F). During this month, precipitation is notable, with 105 mm (4.1 in) of rainfall spread over 9 days. Additionally, the average humidity levels are quite high at 86%, creating a distinct atmosphere.

January Temperature in Hartwell

In January in Hartwell, the average temperature is 8°C (46°F), with a maximum that can reach 25°C (77°F) and a minimum that can drop as low as -9°C (16°F). Be sure to pack layers for your travels, as this location experiences a wide range of temperatures during this month.

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

The chart illustrates January temperature patterns in Hartwell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartwell, January typically has an average temperature of 8°C (46°F), with highs reaching up to 25°C (77°F) and lows dropping to around -9°C (16°F).

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

January Precipitation in Hartwell

In Hartwell in January, the total precipitation amount reaches 105 mm (4.1 in) over the course of 9 days.

January Precipitation Trends in Hartwell

The chart displays monthly precipitation patterns in Hartwell, 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 Hartwell, January typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 9 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 Hartwell

In Hartwell in January humidity is 86%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while exploring.

January Average Humidity in Hartwell

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

In Hartwell 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 Hartwell for better planning.

Maximum UV Index Levels in Hartwell for January

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

Data source: Hartwell 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 Hartwell Compares to Other Months

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

This table compares monthly weather conditions in Hartwell, 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 (46°F)	105 mm (4.1 inches)	86%	moderate
February Weather	10°C (51°F)	138 mm (5.4 inches)	86%	high
March Weather	13°C (56°F)	110 mm (4.3 inches)	86%	very high
April Weather	17°C (63°F)	115 mm (4.5 inches)	82%	very high
May Weather	22°C (72°F)	131 mm (5.2 inches)	85%	extreme
June Weather	25°C (77°F)	103 mm (4.1 inches)	85%	extreme
July Weather	27°C (81°F)	105 mm (4.1 inches)	83%	extreme
August Weather	26°C (80°F)	128 mm (5.1 inches)	76%	very high
September Weather	24°C (76°F)	118 mm (4.7 inches)	76%	very high
October Weather	19°C (67°F)	125 mm (4.9 inches)	80%	very high
November Weather	12°C (53°F)	85 mm (3.4 inches)	88%	high
December Weather	9°C (49°F)	128 mm (5.1 inches)	88%	moderate