April weather forecast
South Lyon, MI

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Weather in April

April is a cool spring month in South Lyon, Michigan, with an average temperature varying between 37.2°F (2.9°C) and 54.3°F (12.4°C).

Temperature

South Lyon, Michigan, in April shows a temperature shift, moving from an average high of a cold 42.4°F (5.8°C) in March to a fresh 54.3°F (12.4°C). During the month of April, the temperature in South Lyon generally drops to a low average of 37.2°F (2.9°C).

Humidity

April is the least humid month in South Lyon, with an average relative humidity of 76%.

Rainfall

In April, the rain falls for 12.9 days. Throughout April, 1.26" (32mm) of precipitation is accumulated. Throughout the year, there are 121.2 rainfall days, and 11.77" (299mm) of precipitation is accumulated.

Snowfall

Months with snowfall in South Lyon are January through May, October through December. In South Lyon, during April, snow falls for 2.2 days and regularly aggregates up to 0.43" (11mm) of snow. In South Lyon, during the entire year, snow falls for 46.7 days and aggregates up to 5.87" (149mm) of snow.

Daylight

In April, the average length of the day is 13h and 24min.
On the first day of the month, sunrise is at 7:15 am and sunset at 8:01 pm. On the last day of April, sunrise is at 6:29 am and sunset at 8:33 pm EDT.

Sunshine

The average sunshine in April is 6.9h.

UV index

The average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 3 during April, leads to the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are April temperatures in South Lyon?

In April, in South Lyon, the average high-temperature is 54.3°F (12.4°C), and the average low-temperature is 37.2°F (2.9°C).

What is the least humid month in South Lyon?

With an average relative humidity of 76%, April is the least humid month.

What is the average humidity in April in South Lyon?

In South Lyon, Michigan, the average relative humidity in April is 76%.

How many days does it rain in April in South Lyon?

In South Lyon, in April, it is raining for 12.9 days, with typically 1.26" (32mm) of accumulated precipitation.

How much does it snow in South Lyon in April?

In April, in South Lyon, Michigan, it is snowing for 2.2 days. Throughout April, 0.43" (11mm) of snow is accumulated.

How many hours of daylight does South Lyon have in April?

In South Lyon, the average day length in April is 13h and 24min.

What time are sunrise and sunset in April in South Lyon?

In April, on the first day of the month, sunrise is at 7:15 am and sunset at 8:01 pm. On the last day of the month, in South Lyon, sunrise is at 6:29 am and sunset at 8:33 pm EDT.

How long on average sun shines in April in South Lyon?

In South Lyon, the average sunshine duration in April is 6.9h.

What is the UV index intensity in April in South Lyon?

The average daily maximum UV index in April in South Lyon, Michigan, is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
South Lyon, MI

Average temperature in April - South Lyon, MI
  • Average high temperature in April: 54.3°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in April: 37.2°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).

Average pressure in April
South Lyon, MI

Average pressure in April - South Lyon, MI
  • Average pressure in April: 29.96"Hg

The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in April
South Lyon, MI

Average wind speed in April - South Lyon, MI
  • Average wind speed in April: 9.8mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

Average humidity in April
South Lyon, MI

Average humidity in April - South Lyon, MI
  • Average humidity in April: 76%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (76%).

Average rainfall in April
South Lyon, MI

Average rainfall in April - South Lyon, MI
  • Average rainfall in April: 1.26"

The wettest month (with the highest rainfall) is May (1.54").
The driest month (with the least rainfall) is February (0.51").

Average rainfall days in April
South Lyon, MI

Average rainfall days in April - South Lyon, MI
  • Average rainfall days in April: 12.9 days

The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is February (4.3 days).

Average snowfall in April
South Lyon, MI

Average snowfall in April - South Lyon, MI
  • Average snowfall in April: 0.43"

The month with the highest snowfall is February (1.61").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in April
South Lyon, MI

Average snowfall days in April - South Lyon, MI
  • Average snowfall days in April: 2.2 days

The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in April /
Average sunshine in April
South Lyon, MI

Average daylight in April / Average sunshine in April - South Lyon, MI
  • Average daylight in April: 13h and 2min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in April: 6h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

Average sunshine days in April
South Lyon, MI

Average sunshine days in April - South Lyon, MI
  • Average sunshine days in April: 13.5 days

The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is May (12.8 days).

Average UV index in April
South Lyon, MI

Average UV index in April - South Lyon, MI
  • Average UV index in April: 3

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in April
South Lyon, MI

Average cloud cover in April - South Lyon, MI
  • Average cloud cover in April: 51

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in April
South Lyon, MI

Average visibility in April - South Lyon, MI
  • Average visibility in April: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

South Lyon, Michigan, USA

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