nomadseason

January Weather in Union City, United States

Last updated: June 24, 2025

In January, the average temperature in Union City, United States hovers around -1°C (30°F), with a minimum that can plummet to -25°C (-12°F) and a balmy maximum reaching 18°C (65°F). Expect about 74 mm (2.9 in) of precipitation over 9 days, accompanied by an average humidity level of 88%, adding a chill to the air that makes this month a unique experience.

January Temperature in Union City

In January in Union City, the average temperature is -1°C (30°F), with maximums reaching 18°C (65°F) and minimums dropping as low as -25°C (-12°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to stay comfortable during their visit.

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 -1°C (30°F), with highs reaching up to 18°C (65°F) and lows dropping to around -25°C (-12°F).
JanFebMarAprMayJunJulAugSepOctNovDec293241516372757368574135
Data source: Temperature data for Union City generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Union City

In Union City in January, the precipitation amount is 74 mm (2.9 in), which occurs over a span of 9 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 74 mm (2.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec749610710013812711010781998874
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Union City

In Union City in January humidity is 88%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that penetrates through your layers, making travel uncomfortable as every gust of wind becomes a sharp reminder of the cold and damp air surrounding you.

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 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
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.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
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.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)74 mm (2.9 inches)88%moderate
February Weather0°C (33°F)96 mm (3.8 inches)87%moderate
March Weather5°C (42°F)107 mm (4.2 inches)87%high
April Weather11°C (51°F)99 mm (3.9 inches)87%very high
May Weather17°C (63°F)138 mm (5.4 inches)81%very high
June Weather22°C (72°F)127 mm (5.0 inches)82%very high
July Weather24°C (76°F)110 mm (4.3 inches)81%very high
August Weather23°C (73°F)107 mm (4.2 inches)78%very high
September Weather20°C (69°F)81 mm (3.2 inches)78%very high
October Weather14°C (57°F)99 mm (3.9 inches)82%high
November Weather5°C (41°F)88 mm (3.5 inches)89%moderate
December Weather2°C (35°F)74 mm (2.9 inches)86%low

Compare Union City's Climate with Cities Worldwide