January Weather in Lyons, United States

Last updated: June 24, 2025

In January, the average temperature in Lyons, United States hovers around 4°C (39°F), with extremes ranging from a chilly -16°C (3°F) to a mild 15°C (60°F). Prepare for 230 mm (9.0 in) of precipitation spread across 17 days, contributing to an average humidity of 85%. Be ready for a mix of weather as you explore!

January Temperature in Lyons

In January in Lyons, the average temperature is 4°C (39°F). The maximum can reach 15°C (60°F), while the minimum can drop as low as -16°C (3°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates January temperature patterns in Lyons, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lyons, January typically has an average temperature of 4°C (39°F), with highs reaching up to 15°C (60°F) and lows dropping to around -16°C (3°F).

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

January Precipitation in Lyons

In Lyons in January, the precipitation amount is 230 mm (9.0 in) over a period of 17 days.

January Precipitation Trends in Lyons

The chart displays monthly precipitation patterns in Lyons, 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 Lyons, January typically receives around 230 mm (9.0 inches) of precipitation spread over approximately 17 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 Lyons

In Lyons in January, humidity is 85%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable and requiring extra layers to ward off the cold and moisture.

January Average Humidity in Lyons

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

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

Maximum UV Index Levels in Lyons for January

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

Data source: Lyons 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 Lyons Compares to Other Months

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

This table compares monthly weather conditions in Lyons, 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 (39°F)	230 mm (9.0 inches)	85%	low
February Weather	3°C (37°F)	290 mm (11.4 inches)	84%	moderate
March Weather	5°C (41°F)	198 mm (7.8 inches)	85%	high
April Weather	8°C (47°F)	193 mm (7.6 inches)	83%	high
May Weather	12°C (54°F)	95 mm (3.7 inches)	83%	very high
June Weather	15°C (60°F)	81 mm (3.2 inches)	83%	very high
July Weather	19°C (67°F)	7 mm (0.3 inches)	82%	very high
August Weather	20°C (68°F)	10 mm (0.4 inches)	74%	very high
September Weather	16°C (60°F)	117 mm (4.6 inches)	71%	very high
October Weather	10°C (50°F)	185 mm (7.3 inches)	81%	moderate
November Weather	6°C (43°F)	230 mm (9.1 inches)	87%	moderate
December Weather	3°C (38°F)	275 mm (10.8 inches)	87%	low