January weather forecast
South Lyon, MI

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Weather in January

January, like December, is a freezing cold winter month in South Lyon, Michigan, with temperature in the range of an average high of 28°F (-2.2°C) and an average low of 17.2°F (-8.2°C).

Temperature

South Lyon's coldest temperatures are experienced in January, with average high temperatures of 28°F (-2.2°C) and lows of 17.2°F (-8.2°C).

Humidity

January and February, with an average relative humidity of 86%, are the most humid months in South Lyon, Michigan.

Rainfall

In South Lyon, in January, during 4.4 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. Throughout the year, in South Lyon, there are 121.2 rainfall days, and 11.77" (299mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In January, in South Lyon, it is snowing for 11.7 days. Throughout January, 1.54" (39mm) of snow is accumulated. Throughout the year, in South Lyon, there are 46.7 snowfall days, and 5.87" (149mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 29min.
On the first day of January, sunrise is at 8:04 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 5:46 pm EST.

Sunshine

January has the least sunshine of the year in South Lyon, Michigan, with an average of 2.8h of sunshine.

UV index

The months with the lowest UV index in South Lyon are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 1 during January translates into the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. To protect against the Sun's most potent rays, avoid direct exposure around midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month in South Lyon?

January, known for its average high temperature of 28°F (-2.2°C) and an average low temperature of 17.2°F (-8.2°C), is the coldest month.

How cold is it in South Lyon in January?

South Lyon in January has an average high-temperature of 28°F (-2.2°C) and an average low-temperature of 17.2°F (-8.2°C).

What are the most humid months in South Lyon?

January and February, with an average relative humidity of 86%, are most humid months.

What is the average humidity in January in South Lyon?

The average relative humidity in January in South Lyon is 86%.

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

In South Lyon, Michigan, during January, the rain falls for 4.4 days and regularly aggregates up to 0.59" (15mm) of precipitation.

How many days does it snow in January in South Lyon?

In South Lyon, in January, during 11.7 snowfall days, 1.54" (39mm) of snow is typically accumulated.

What is the average length of the day in January in South Lyon?

In January, the average day length in South Lyon is 9h and 29min.

When is the sunrise / sunset in January in South Lyon?

On the first day of January, sunrise is at 8:04 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:49 am and sunset at 5:46 pm EST.

What is the month with the least sunshine in South Lyon?

January has the least sunshine of the year in South Lyon, Michigan, with an average of 2.8h of sunshine.

How many hours of sunshine does South Lyon have in January?

In South Lyon, the average sunshine duration in January is 2.8h.

When is the lowest UV index in South Lyon?

The months with the lowest UV index in South Lyon, Michigan, are January and December, with an average maximum UV index of 1.

How high is the UV index in January in South Lyon?

In South Lyon, Michigan, the average daily maximum UV index in January is 1. A UV Index estimate of 2, and below, represents a low health threat 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 January
South Lyon, MI

Average temperature in January - South Lyon, MI
  • Average high temperature in January: 28°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 January: 17.2°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 January
South Lyon, MI

Average pressure in January - South Lyon, MI
  • Average pressure in January: 30.07"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 January
South Lyon, MI

Average wind speed in January - South Lyon, MI
  • Average wind speed in January: 10.1mph

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 January
South Lyon, MI

Average humidity in January - South Lyon, MI
  • Average humidity in January: 86%

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 January
South Lyon, MI

Average rainfall in January - South Lyon, MI
  • Average rainfall in January: 0.59"

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 January
South Lyon, MI

Average rainfall days in January - South Lyon, MI
  • Average rainfall days in January: 4.4 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 January
South Lyon, MI

Average snowfall in January - South Lyon, MI
  • Average snowfall in January: 1.54"

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 January
South Lyon, MI

Average snowfall days in January - South Lyon, MI
  • Average snowfall days in January: 11.7 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 January /
Average sunshine in January
South Lyon, MI

Average daylight in January / Average sunshine in January - South Lyon, MI
  • Average daylight in January: 9h and 3min

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 January: 2h 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 January
South Lyon, MI

Average sunshine days in January - South Lyon, MI
  • Average sunshine days in January: 16.2 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 January
South Lyon, MI

Average UV index in January - South Lyon, MI
  • Average UV index in January: 1

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 January
South Lyon, MI

Average cloud cover in January - South Lyon, MI
  • Average cloud cover in January: 70

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 January
South Lyon, MI

Average visibility in January - South Lyon, MI
  • Average visibility in January: 5mi

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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