January Weather in Bay City, United States

Last updated: June 24, 2025

In January, the average temperature in Bay City, United States hovers around 8°C (46°F), with highs reaching 14°C (58°F) and lows dipping to a chilly -1°C (31°F). Expect notable precipitation, totaling 270 mm (10.6 in) across approximately 18 days of the month, contributing to an average humidity level of 85%. Prepare for a wet and cool climate!

January Temperature in Bay City

In January in Bay City, the average temperature is 8°C (46°F). The maximum can reach 14°C (58°F) and the minimum can be as low as -1°C (31°F). Be sure to pack layers to stay comfortable while exploring this chilly yet charming destination.

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

The chart illustrates January temperature patterns in Bay City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bay City, January typically has an average temperature of 8°C (46°F), with highs reaching up to 14°C (58°F) and lows dropping to around -1°C (31°F).

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

January Precipitation in Bay City

In Bay City in January, the precipitation amount is 270 mm (10.6 in) over the course of 18 days.

January Precipitation Trends in Bay City

The chart displays monthly precipitation patterns in Bay 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 Bay City, January typically receives around 270 mm (10.6 inches) of precipitation spread over approximately 18 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 Bay City

In Bay City in January humidity is 85%. With an average temperature of 8°C (46°F), this humidity feels like a cold, damp embrace that can leave travelers feeling chilled and uncomfortable, making outdoor exploration less appealing and encouraging the search for cozy indoor activities instead.

January Average Humidity in Bay City

This chart illustrates the average monthly humidity levels in Bay 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 Bay 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 Bay City

In Bay City in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Bay City, you can visit Hourly UV Index in Bay City.

Maximum UV Index Levels in Bay City for January

The chart shows the monthly maximum UV Index (UVI) for Bay 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 Bay City typically reaches 2, which falls under the low exposure category.

Data source: Bay 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 Bay City Compares to Other Months

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

This table compares monthly weather conditions in Bay City, 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)	270 mm (10.6 inches)	85%	low
February Weather	7°C (44°F)	244 mm (9.6 inches)	84%	moderate
March Weather	8°C (46°F)	192 mm (7.6 inches)	85%	moderate
April Weather	9°C (49°F)	157 mm (6.2 inches)	83%	high
May Weather	11°C (53°F)	77 mm (3.0 inches)	83%	very high
June Weather	14°C (57°F)	67 mm (2.6 inches)	83%	very high
July Weather	15°C (59°F)	16 mm (0.6 inches)	82%	very high
August Weather	15°C (60°F)	17 mm (0.7 inches)	74%	very high
September Weather	15°C (59°F)	96 mm (3.8 inches)	71%	high
October Weather	12°C (54°F)	176 mm (6.9 inches)	81%	moderate
November Weather	10°C (50°F)	274 mm (10.8 inches)	87%	moderate
December Weather	8°C (46°F)	301 mm (11.8 inches)	87%	low