January Weather in Rensselaer, United States

Last updated: June 24, 2025

In Rensselaer, United States, the average temperature in January hovers around -2°C (28°F), with a chill that can plunge to a minimum of -29°C (-20°F) and occasionally warm up to a maximum of 18°C (65°F). This month typically sees 73 mm (2.9 in) of precipitation spread over 8 days, creating a wet and humid atmosphere with an average humidity level of 85%.

January Temperature in Rensselaer

In January in Rensselaer, the average temperature is -2°C (28°F). The maximum can reach 18°C (65°F), and the minimum can be as low as -29°C (-20°F). Travelers should be prepared for a wide range of temperatures and dress accordingly for both chilly and mild conditions.

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

The chart illustrates January temperature patterns in Rensselaer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rensselaer, January typically has an average temperature of -2°C (28°F), with highs reaching up to 18°C (65°F) and lows dropping to around -29°C (-20°F).

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

January Precipitation in Rensselaer

In Rensselaer in January, the precipitation amount is 73 mm (2.9 in) over a span of 8 days.

January Precipitation Trends in Rensselaer

The chart displays monthly precipitation patterns in Rensselaer, 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 Rensselaer, January typically receives around 73 mm (2.9 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 Rensselaer

In Rensselaer in January, humidity is 85%. With an average temperature of -2°C (28°F), this humidity feels like an icy grip that clings uncomfortably to your skin, making every step feel heavier and hastening the chill that seeps into your bones, discouraging long outdoor excursions and leaving you yearning for warmth and shelter.

January Average Humidity in Rensselaer

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

In Rensselaer 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 Rensselaer, you can check the information here.

Maximum UV Index Levels in Rensselaer for January

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

Data source: Rensselaer 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 Rensselaer Compares to Other Months

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

This table compares monthly weather conditions in Rensselaer, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	73 mm (2.9 inches)	85%	moderate
February Weather	-1°C (30°F)	75 mm (2.9 inches)	85%	moderate
March Weather	5°C (41°F)	102 mm (4.0 inches)	86%	high
April Weather	10°C (51°F)	111 mm (4.4 inches)	87%	very high
May Weather	17°C (63°F)	161 mm (6.3 inches)	81%	very high
June Weather	23°C (74°F)	109 mm (4.3 inches)	82%	very high
July Weather	25°C (76°F)	108 mm (4.3 inches)	81%	very high
August Weather	23°C (74°F)	105 mm (4.2 inches)	79%	very high
September Weather	21°C (69°F)	69 mm (2.7 inches)	78%	very high
October Weather	13°C (56°F)	125 mm (4.9 inches)	81%	high
November Weather	5°C (41°F)	69 mm (2.7 inches)	89%	moderate
December Weather	1°C (35°F)	58 mm (2.3 inches)	86%	low