January Weather in Unionville, United States

Last updated: June 24, 2025

In January, the average temperature in Unionville, United States hovers around -1°C (30°F), with a minimum plunge to -21°C (-5°F) and a maximum rise to 17°C (64°F). Expect a total precipitation of 71 mm (2.8 in) across 8 days, coupled with an average humidity of 84%. Stay warm and prepared for the seasonal shifts!

January Temperature in Unionville

In January in Unionville, the average temperature is -1°C (30°F), with maximums reaching up to 17°C (64°F) and minimums plummeting as low as -21°C (-5°F). Travelers should prepare for a wide temperature range and dress in layers to stay comfortable during their visit.

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

The chart illustrates January temperature patterns in Unionville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Unionville, January typically has an average temperature of -1°C (30°F), with highs reaching up to 17°C (64°F) and lows dropping to around -21°C (-5°F).

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

January Precipitation in Unionville

In Unionville in January, the precipitation amount is 71 mm (2.8 in) over the course of 8 days.

January Precipitation Trends in Unionville

The chart displays monthly precipitation patterns in Unionville, 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 Unionville, January typically receives around 71 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.

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Millimeters (mm) Inches (in)

January Humidity in Unionville

In Unionville in January, humidity is 84%. With an average temperature of -1°C (30°F), this humidity feels like a sharp chill that seeps into your bones, making travel uncomfortable as the wetness in the air intensifies the cold, leaving you yearning for warmth and shelter.

January Average Humidity in Unionville

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

In Unionville 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 Unionville, you can check the information here.

Maximum UV Index Levels in Unionville for January

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

Data source: Unionville 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 Unionville Compares to Other Months

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

This table compares monthly weather conditions in Unionville, 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 (30°F)	71 mm (2.8 inches)	84%	moderate
February Weather	0°C (33°F)	98 mm (3.8 inches)	82%	moderate
March Weather	3°C (39°F)	92 mm (3.6 inches)	81%	high
April Weather	10°C (49°F)	114 mm (4.5 inches)	78%	very high
May Weather	15°C (60°F)	129 mm (5.1 inches)	69%	very high
June Weather	20°C (69°F)	97 mm (3.8 inches)	69%	very high
July Weather	24°C (75°F)	135 mm (5.3 inches)	62%	very high
August Weather	22°C (73°F)	130 mm (5.1 inches)	65%	very high
September Weather	19°C (66°F)	107 mm (4.2 inches)	68%	very high
October Weather	13°C (56°F)	139 mm (5.5 inches)	74%	high
November Weather	5°C (42°F)	88 mm (3.5 inches)	82%	moderate
December Weather	1°C (34°F)	103 mm (4.1 inches)	80%	low