January Weather in Glassboro, United States

Last updated: June 24, 2025

In January, the average temperature in Glassboro, United States hovers around 2°C (36°F), with fluctuations ranging from a chilly -17°C (1°F) to a balmy 20°C (69°F). Expect a precipitation of approximately 60 mm (2.3 in) over 8 days, contributing to an average humidity level of 84%. Be prepared for a mix of weather as you navigate this picturesque locale!

January Temperature in Glassboro

In January in Glassboro, the average temperature is 2°C (36°F). Maximums can reach 20°C (69°F), while minimums can dip as low as -17°C (1°F). Be prepared for a wide range of temperatures if you're traveling during this month.

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

The chart illustrates January temperature patterns in Glassboro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Glassboro, January typically has an average temperature of 2°C (36°F), with highs reaching up to 20°C (69°F) and lows dropping to around -17°C (1°F).

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

January Precipitation in Glassboro

In Glassboro in January, the precipitation amount is 60 mm (2.3 in) over a span of 8 days.

January Precipitation Trends in Glassboro

The chart displays monthly precipitation patterns in Glassboro, 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 Glassboro, January typically receives around 60 mm (2.3 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 Glassboro

In Glassboro in January, humidity is 84%. With an average temperature of 2°C (36°F), this humidity feels like a cold, damp blanket wrapping around you, making outdoor activities less inviting and requiring extra layers to stay comfortable while traveling.

January Average Humidity in Glassboro

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

In Glassboro 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 Glassboro, you can check the information here.

Maximum UV Index Levels in Glassboro for January

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

Data source: Glassboro 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 Glassboro Compares to Other Months

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

This table compares monthly weather conditions in Glassboro, 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 (36°F)	60 mm (2.3 inches)	84%	moderate
February Weather	4°C (40°F)	106 mm (4.2 inches)	83%	moderate
March Weather	7°C (45°F)	109 mm (4.3 inches)	83%	high
April Weather	13°C (55°F)	99 mm (3.9 inches)	81%	very high
May Weather	18°C (65°F)	132 mm (5.2 inches)	78%	very high
June Weather	23°C (74°F)	117 mm (4.6 inches)	79%	very high
July Weather	26°C (79°F)	136 mm (5.3 inches)	74%	very high
August Weather	25°C (77°F)	140 mm (5.5 inches)	72%	very high
September Weather	22°C (72°F)	95 mm (3.7 inches)	75%	very high
October Weather	17°C (62°F)	116 mm (4.6 inches)	81%	high
November Weather	9°C (48°F)	78 mm (3.1 inches)	85%	moderate
December Weather	5°C (41°F)	100 mm (3.9 inches)	84%	moderate