January Weather in Union City, United States

Last updated: June 24, 2025

In Union City, United States during January, the average temperature dips to a chilly -3°C (27°F). However, temperatures can swing dramatically, with a minimum of -27°C (-16°F) and a maximum reaching 16°C (60°F). The month sees an average precipitation of 71 mm (2.8 in) spread over 11 days, while the air remains notably damp with an average humidity of 85%. Prepare for an interesting mix of weather conditions!

January Temperature in Union City

In January in Union City, the average temperature is -3°C (27°F), with maximums reaching 16°C (60°F) and minimums plummeting as low as -27°C (-16°F). Travelers should prepare for a wide range of temperatures and pack accordingly.

January Weather in Union City: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Union City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Union City, January typically has an average temperature of -3°C (27°F), with highs reaching up to 16°C (60°F) and lows dropping to around -27°C (-16°F).

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

January Precipitation in Union City

In Union City in January, the precipitation amount is 71 mm (2.8 in) distributed over 11 days.

January Precipitation Trends in Union City

The chart displays monthly precipitation patterns in Union City, 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 Union City, January typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 11 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 Union City

In Union City in January humidity is 85%. With an average temperature of -3°C (27°F), this humidity feels like a biting chill that seeps through layers of clothing, making travel seem daunting and the cold air sting your skin.

January Average Humidity in Union City

This chart illustrates the average monthly humidity levels in Union City, 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 Union City is approximately 85%, 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 Union City

In Union City 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 Union City, you can check the information here.

Maximum UV Index Levels in Union City for January

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

Data source: Union City 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 Union City Compares to Other Months

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

This table compares monthly weather conditions in Union City, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (27°F)	71 mm (2.8 inches)	85%	moderate
February Weather	-2°C (28°F)	75 mm (2.9 inches)	85%	moderate
March Weather	3°C (38°F)	89 mm (3.5 inches)	86%	high
April Weather	8°C (48°F)	97 mm (3.8 inches)	87%	very high
May Weather	16°C (61°F)	142 mm (5.6 inches)	81%	very high
June Weather	22°C (71°F)	115 mm (4.5 inches)	82%	very high
July Weather	24°C (75°F)	120 mm (4.7 inches)	81%	very high
August Weather	22°C (72°F)	75 mm (3.0 inches)	79%	very high
September Weather	19°C (66°F)	86 mm (3.4 inches)	78%	very high
October Weather	12°C (54°F)	131 mm (5.2 inches)	81%	high
November Weather	4°C (39°F)	77 mm (3.0 inches)	89%	moderate
December Weather	0°C (33°F)	60 mm (2.4 inches)	86%	low