April Weather in Lyons, United States

Last updated: June 24, 2025

In Lyons, United States, the average temperature in April hovers around 9°C (48°F). However, be prepared for a wide range, as temperatures can dip to a chilly -11°C (13°F) or rise to a warm 30°C (86°F). Expect 71 mm (2.8 in) of precipitation over approximately 10 days, accompanied by an average humidity of 74%. Make sure to pack accordingly!

April Temperature in Lyons

In April in Lyons, the average temperature is 9°C (48°F). Maximum temperatures can reach 30°C (86°F), while the minimum can drop as low as -11°C (13°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm days and chilly nights.

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

The chart illustrates April 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, April typically has an average temperature of 9°C (48°F), with highs reaching up to 30°C (86°F) and lows dropping to around -11°C (13°F).

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

April Precipitation in Lyons

In Lyons in April, the precipitation amount is 71 mm (2.8 in) over a duration of 10 days.

April Precipitation Trends in Lyons

The chart displays monthly precipitation patterns in Lyons, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Lyons, April typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

April Humidity in Lyons

In Lyons in April humidity is 74%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and necessitating warm layers to fully enjoy your explorations.

April Average Humidity in Lyons

This chart illustrates the average monthly humidity levels in Lyons, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Lyons is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Lyons

In Lyons in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Lyons.

Maximum UV Index Levels in Lyons for April

The chart shows the monthly maximum UV Index (UVI) for Lyons in April, 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 April, the maximum UV index in Lyons typically reaches 8, which falls under the very high exposure category.

Data source: Lyons April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (24°F)	30 mm (1.2 inches)	76%	moderate
February Weather	-5°C (24°F)	30 mm (1.2 inches)	80%	moderate
March Weather	4°C (39°F)	87 mm (3.4 inches)	73%	high
April Weather	9°C (48°F)	71 mm (2.8 inches)	74%	very high
May Weather	16°C (61°F)	151 mm (5.9 inches)	78%	very high
June Weather	24°C (75°F)	122 mm (4.8 inches)	82%	very high
July Weather	25°C (77°F)	69 mm (2.7 inches)	83%	very high
August Weather	23°C (73°F)	115 mm (4.5 inches)	80%	very high
September Weather	20°C (68°F)	82 mm (3.2 inches)	75%	very high
October Weather	11°C (51°F)	87 mm (3.4 inches)	75%	high
November Weather	4°C (39°F)	28 mm (1.1 inches)	82%	moderate
December Weather	-1°C (30°F)	44 mm (1.7 inches)	83%	low