January Weather in Bangor, United States

Last updated: June 24, 2025

In Bangor, United States, the average temperature in January hovers around -5°C (23°F), with potential extremes ranging from a chilling -29°C (-19°F) to a mild 12°C (54°F). This month sees approximately 90 mm (3.5 in) of precipitation spread over 8 days, contributing to a notably high average humidity of 88%. Prepare for brisk days and ample moisture as you embrace the season!

January Temperature in Bangor

In January in Bangor, the average temperature is -5°C (23°F), with maximums reaching 12°C (54°F) and minimums dropping as low as -29°C (-19°F). It's essential to be prepared for chilly weather and significant temperature swings when traveling during this time.

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

The chart illustrates January temperature patterns in Bangor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bangor, January typically has an average temperature of -5°C (23°F), with highs reaching up to 12°C (54°F) and lows dropping to around -29°C (-19°F).

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

January Precipitation in Bangor

In Bangor in January, the precipitation amount is 90 mm (3.5 in) spread over 8 days, indicating a relatively wet period for the region.

January Precipitation Trends in Bangor

The chart displays monthly precipitation patterns in Bangor, 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 Bangor, January typically receives around 90 mm (3.5 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 Bangor

In Bangor in January humidity is 88%. With an average temperature of -5°C (23°F), this humidity feels like an icy blanket enveloping you, making travel uncomfortable as the cold damp air seeps through layers of clothing, chilling you to the bone.

January Average Humidity in Bangor

This chart illustrates the average monthly humidity levels in Bangor, 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 Bangor is approximately 88%, 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 Bangor

In Bangor 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 Bangor, you can visit Hourly UV Index in Bangor.

Maximum UV Index Levels in Bangor for January

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

Data source: Bangor 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 Bangor Compares to Other Months

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

This table compares monthly weather conditions in Bangor, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	90 mm (3.5 inches)	88%	low
February Weather	-4°C (24°F)	82 mm (3.2 inches)	88%	moderate
March Weather	-1°C (31°F)	70 mm (2.7 inches)	85%	moderate
April Weather	6°C (43°F)	124 mm (4.9 inches)	81%	high
May Weather	12°C (54°F)	93 mm (3.7 inches)	76%	very high
June Weather	18°C (64°F)	84 mm (3.3 inches)	74%	very high
July Weather	21°C (69°F)	93 mm (3.7 inches)	74%	very high
August Weather	20°C (69°F)	71 mm (2.8 inches)	74%	very high
September Weather	16°C (62°F)	72 mm (2.8 inches)	77%	high
October Weather	10°C (50°F)	115 mm (4.5 inches)	82%	moderate
November Weather	3°C (37°F)	116 mm (4.6 inches)	85%	moderate
December Weather	-3°C (27°F)	119 mm (4.7 inches)	84%	low