April Weather in Lyons, United States

Last updated: June 24, 2025

In Lyons, United States, the average temperature in April hovers around 20°C (68°F). However, it can swing from a chilly 1°C (34°F) to a sweltering 37°C (99°F). Be prepared for approximately 84 mm (3.3 in) of precipitation over 8 days, and expect the air to feel quite humid with an average humidity of 79%.

April Temperature in Lyons

In April, in Lyons, the average temperature is 20°C (68°F), with maximums reaching up to 37°C (99°F) and minimums dropping as low as 1°C (34°F). Be prepared for a wide range of temperatures and pack accordingly for your travels!

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 20°C (68°F), with highs reaching up to 37°C (99°F) and lows dropping to around 1°C (34°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 84 mm (3.3 in) spread over 8 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 84 mm (3.3 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Lyons

In Lyons in April humidity is 79%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that clings to the skin, making outdoor activities feel more strenuous and prompting the need for frequent breaks and hydration while traveling.

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 79%, 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 reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check 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 10, 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	11°C (52°F)	78 mm (3.1 inches)	86%	moderate
February Weather	14°C (57°F)	97 mm (3.8 inches)	81%	high
March Weather	16°C (62°F)	72 mm (2.8 inches)	81%	very high
April Weather	20°C (68°F)	84 mm (3.3 inches)	79%	very high
May Weather	24°C (76°F)	79 mm (3.1 inches)	75%	extreme
June Weather	27°C (80°F)	103 mm (4.1 inches)	75%	extreme
July Weather	29°C (84°F)	124 mm (4.9 inches)	80%	extreme
August Weather	28°C (83°F)	115 mm (4.5 inches)	81%	extreme
September Weather	26°C (80°F)	94 mm (3.7 inches)	83%	very high
October Weather	22°C (72°F)	79 mm (3.1 inches)	78%	very high
November Weather	15°C (58°F)	58 mm (2.3 inches)	85%	high
December Weather	12°C (54°F)	123 mm (4.8 inches)	87%	moderate