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April Weather in South Lyon, United States

Last updated: June 24, 2025

In April, the average temperature in South Lyon, United States hovers around 8°C (47°F). Expect variability in temperatures, with a minimum dipping to -6°C (21°F) and a pleasant maximum reaching 27°C (81°F). During this time, anticipate 90 mm (3.6 in) of precipitation spread over about 14 days, contributing to a high average humidity of 86%.

April Temperature in South Lyon

In April in South Lyon, the average temperature is 8°C (47°F). Maximum temperatures can reach 27°C (81°F), while minimums can drop as low as -6°C (21°F). Be prepared for a wide range of temperatures when traveling to South Lyon during this time.

April Weather in South Lyon: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in South Lyon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Lyon, April typically has an average temperature of 8°C (47°F), with highs reaching up to 27°C (81°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec262737465969747265533932
Data source: Temperature data for South Lyon 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 South Lyon

In South Lyon in April, the precipitation amount is 90 mm (3.6 in) accumulated over a span of 14 days.

April Precipitation Trends in South Lyon

The chart displays monthly precipitation patterns in South Lyon, 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 South Lyon, April typically receives around 90 mm (3.6 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec64667290111989074731047454
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in South Lyon

In South Lyon in April, humidity is 86%. With an average temperature of 8°C (47°F), this humidity feels like a chilling damp that penetrates your clothes, making outdoor adventures less enjoyable and encouraging you to seek warmth indoors rather than explore the sights.

April Average Humidity in South Lyon

This chart illustrates the average monthly humidity levels in South Lyon, 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 South Lyon is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in South Lyon

In South Lyon 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 South Lyon.

Maximum UV Index Levels in South Lyon for April

The chart shows the monthly maximum UV Index (UVI) for South Lyon 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 South Lyon typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24599101097542
Data source: South Lyon 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 South Lyon Compares to Other Months

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

This table compares monthly weather conditions in South Lyon, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)63 mm (2.5 inches)88%low
February Weather-3°C (28°F)66 mm (2.6 inches)87%moderate
March Weather3°C (37°F)72 mm (2.8 inches)85%moderate
April Weather8°C (47°F)90 mm (3.6 inches)86%very high
May Weather15°C (60°F)111 mm (4.4 inches)80%very high
June Weather21°C (70°F)98 mm (3.9 inches)80%very high
July Weather23°C (74°F)90 mm (3.5 inches)80%very high
August Weather22°C (72°F)74 mm (2.9 inches)80%very high
September Weather18°C (65°F)73 mm (2.9 inches)80%high
October Weather12°C (54°F)104 mm (4.1 inches)84%moderate
November Weather4°C (39°F)74 mm (2.9 inches)89%moderate
December Weather0°C (32°F)54 mm (2.1 inches)86%low

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