January Weather in Sylvan, United States

Last updated: June 24, 2025

In January, the average temperature in Sylvan, United States hovers around -7°C (20°F). Temperatures can plunge to a chilling -33°C (-27°F) at times, while they can also reach a milder 10°C (50°F). Expect about 39 mm (1.5 in) of precipitation spread over 8 days, along with an average humidity level of 84%. Stay prepared for the cold!

January Temperature in Sylvan

In January in Sylvan, the average temperature is -7°C (20°F). The maximum can reach 10°C (50°F) and the minimum can be as low as -33°C (-27°F). Be sure to pack warm clothing and prepare for potentially extreme weather conditions when traveling to Sylvan during this time.

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

The chart illustrates January temperature patterns in Sylvan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sylvan, January typically has an average temperature of -7°C (20°F), with highs reaching up to 10°C (50°F) and lows dropping to around -33°C (-27°F).

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

January Precipitation in Sylvan

In Sylvan in January, the precipitation amount is 39 mm (1.5 in) over the course of 8 days.

January Precipitation Trends in Sylvan

The chart displays monthly precipitation patterns in Sylvan, 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 Sylvan, January typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Sylvan

In Sylvan in January, humidity is 84%. With an average temperature of -7°C (20°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable and requiring extra layers to stay warm and dry.

January Average Humidity in Sylvan

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

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

Maximum UV Index Levels in Sylvan for January

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

Data source: Sylvan 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 Sylvan Compares to Other Months

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

This table compares monthly weather conditions in Sylvan, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	39 mm (1.5 inches)	84%	low
February Weather	-6°C (22°F)	54 mm (2.1 inches)	85%	moderate
March Weather	2°C (36°F)	59 mm (2.3 inches)	84%	moderate
April Weather	7°C (46°F)	87 mm (3.4 inches)	83%	very high
May Weather	15°C (59°F)	135 mm (5.3 inches)	75%	very high
June Weather	21°C (70°F)	125 mm (4.9 inches)	79%	very high
July Weather	23°C (74°F)	103 mm (4.1 inches)	75%	very high
August Weather	21°C (71°F)	101 mm (4.0 inches)	69%	very high
September Weather	18°C (65°F)	120 mm (4.7 inches)	74%	very high
October Weather	10°C (50°F)	120 mm (4.7 inches)	79%	moderate
November Weather	2°C (35°F)	52 mm (2.1 inches)	88%	moderate
December Weather	-2°C (28°F)	44 mm (1.7 inches)	82%	low