January Weather in Hanover, United States

Last updated: June 24, 2025

In January, the average temperature in Hanover, United States hovers around 4°C (40°F), though it can swing dramatically from a chilly -19°C (-3°F) to a warm 23°C (73°F). Expect 66 mm (2.6 in) of precipitation over 8 days, contributing to a rather high average humidity of 84%. Prepare for varied weather conditions, making layering your clothing essential!

January Temperature in Hanover

In January in Hanover, the average temperature is 4°C (40°F), with maximums reaching 23°C (73°F) and minimums dropping as low as -19°C (-3°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack accordingly for both warm and cold conditions.

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

The chart illustrates January temperature patterns in Hanover, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hanover, January typically has an average temperature of 4°C (40°F), with highs reaching up to 23°C (73°F) and lows dropping to around -19°C (-3°F).

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

January Precipitation in Hanover

In Hanover in January, the total precipitation amount is 66 mm (2.6 in) over the course of 8 days.

January Precipitation Trends in Hanover

The chart displays monthly precipitation patterns in Hanover, 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 Hanover, January typically receives around 66 mm (2.6 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 Hanover

In Hanover in January, humidity is 84%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and requiring extra layers to stay warm and dry while traveling.

January Average Humidity in Hanover

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

In Hanover 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 Hanover, you can check the information here.

Maximum UV Index Levels in Hanover for January

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

Data source: Hanover 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 Hanover Compares to Other Months

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

This table compares monthly weather conditions in Hanover, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	66 mm (2.6 inches)	84%	moderate
February Weather	7°C (45°F)	97 mm (3.8 inches)	83%	high
March Weather	10°C (50°F)	79 mm (3.1 inches)	82%	high
April Weather	15°C (60°F)	107 mm (4.2 inches)	81%	very high
May Weather	20°C (68°F)	105 mm (4.1 inches)	80%	very high
June Weather	24°C (76°F)	130 mm (5.1 inches)	82%	very high
July Weather	27°C (81°F)	115 mm (4.5 inches)	81%	very high
August Weather	25°C (78°F)	175 mm (6.9 inches)	81%	very high
September Weather	23°C (73°F)	103 mm (4.1 inches)	78%	very high
October Weather	18°C (64°F)	123 mm (4.9 inches)	80%	high
November Weather	10°C (50°F)	74 mm (2.9 inches)	84%	moderate
December Weather	6°C (44°F)	91 mm (3.6 inches)	84%	moderate