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April Weather in Lyons, United States

Last updated: June 24, 2025

In Lyons, United States, the average temperature in April hovers around 12°C (55°F). However, be prepared for a wide range, as temperatures can dip as low as -8°C (17°F) or soar up to 33°C (92°F). Expect about 54 mm (2.1 in) of precipitation spread over 9 days, with an average humidity level of 70%.

April Temperature in Lyons

In April in Lyons, the average temperature is 12°C (55°F). Maximums can reach 33°C (92°F) while minimums can drop as low as -8°C (17°F). It's advisable to pack layers and be prepared for a wide range of temperatures when traveling during this time.

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 12°C (55°F), with highs reaching up to 33°C (92°F) and lows dropping to around -8°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec323347546578817772574537
Data source: Temperature data for Lyons generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Lyons

In Lyons in April, the precipitation amount is 54 mm (2.1 in) over a span of 9 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 54 mm (2.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec2727695416072709265852629
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Lyons

In Lyons in April, humidity is 70%. With an average temperature of 12°C (55°F), this humidity feels like a thick blanket enveloping you, making outdoor exploration feel heavier and often requiring more breaks to stay comfortable 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 70%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%78%67%70%82%81%80%80%74%71%79%83%
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 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109753
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.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)27 mm (1.0 inches)74%moderate
February Weather1°C (33°F)27 mm (1.1 inches)78%moderate
March Weather8°C (47°F)69 mm (2.7 inches)67%high
April Weather12°C (55°F)54 mm (2.1 inches)70%very high
May Weather18°C (65°F)160 mm (6.3 inches)82%very high
June Weather25°C (78°F)72 mm (2.9 inches)81%extreme
July Weather27°C (81°F)70 mm (2.8 inches)80%extreme
August Weather25°C (78°F)92 mm (3.6 inches)80%very high
September Weather22°C (73°F)65 mm (2.6 inches)73%very high
October Weather14°C (57°F)85 mm (3.4 inches)71%high
November Weather7°C (45°F)26 mm (1.0 inches)79%moderate
December Weather3°C (37°F)29 mm (1.2 inches)83%moderate

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