January Weather in Wallkill, United States

Last updated: June 24, 2025

In January, the average temperature in Wallkill, United States hovers around -1°C (30°F). While the thermometer can dip as low as -21°C (-6°F), it can also rise to a pleasant 18°C (64°F). Expect around 70 mm (2.8 inches) of precipitation spread over about 8 days, coupled with an average humidity level of 84%.

January Temperature in Wallkill

In January in Wallkill, the average temperature is -1°C (30°F), with maximums reaching up to 18°C (64°F) and minimums dropping as low as -21°C (-6°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your travels.

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

The chart illustrates January temperature patterns in Wallkill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wallkill, January typically has an average temperature of -1°C (30°F), with highs reaching up to 18°C (64°F) and lows dropping to around -21°C (-6°F).

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

January Precipitation in Wallkill

In Wallkill in January, the total precipitation amount is 70 mm (2.8 in), spread over the course of 8 days.

January Precipitation Trends in Wallkill

The chart displays monthly precipitation patterns in Wallkill, 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 Wallkill, January typically receives around 70 mm (2.8 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 Wallkill

In Wallkill in January, humidity is 84%. With an average temperature of -1°C (30°F), this humidity feels like a sharp chill that seeps into your bones, making travel uncomfortable as the wetness in the air intensifies the cold, leaving you yearning for warmth and shelter.

January Average Humidity in Wallkill

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

In Wallkill 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 Wallkill, you can check the information here.

Maximum UV Index Levels in Wallkill for January

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

Data source: Wallkill 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 Wallkill Compares to Other Months

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

This table compares monthly weather conditions in Wallkill, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	70 mm (2.8 inches)	84%	moderate
February Weather	0°C (33°F)	96 mm (3.8 inches)	82%	moderate
March Weather	4°C (39°F)	89 mm (3.5 inches)	81%	high
April Weather	10°C (50°F)	118 mm (4.7 inches)	78%	very high
May Weather	15°C (60°F)	121 mm (4.8 inches)	69%	very high
June Weather	20°C (69°F)	94 mm (3.7 inches)	69%	very high
July Weather	24°C (75°F)	123 mm (4.9 inches)	62%	very high
August Weather	23°C (73°F)	122 mm (4.8 inches)	65%	very high
September Weather	19°C (66°F)	108 mm (4.3 inches)	68%	very high
October Weather	13°C (56°F)	142 mm (5.6 inches)	74%	high
November Weather	5°C (42°F)	89 mm (3.5 inches)	82%	moderate
December Weather	1°C (34°F)	101 mm (4.0 inches)	80%	low