Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January is the month when Island Lake sees the lowest average temperatures, with a high of 18.7°F (-7.4°C) and a low of 6.1°F (-14.4°C).Humidity
The months with the highest humidity are January and February, with an average relative humidity of 92%.Rainfall
January is the month with the least rainfall. Rain falls for 3.7 days and accumulates 0.94" (24mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Island Lake, during January, snow falls for 17.8 days and regularly aggregates up to 5.43" (138mm) of snow. Throughout the year, there are 84 snowfall days, and 33.46" (850mm) of snow is accumulated.Daylight
The average length of the day in January is 9h and 13min.On the first day of January, sunrise is at 7:44 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:10 pm CST.
Sunshine
January and February, with an average of 2.8h of sunshine, are months with the least sunshine.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In January, the maximum UV index of 1 translates into these guidelines:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is it in January?
What are the most humid months?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
How much does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
What are the months with the least sunshine?
How many hours of sunshine does Island Lake have in January?
When is the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Island Lake, WI
- Average high temperature in January: 18.7°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (18.7°F).
- Average low temperature in January: 6.1°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (6.1°F).
Average pressure in January
Island Lake, WI
- Average pressure in January: 30.11"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in January
Island Lake, WI
- Average wind speed in January: 8.7mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in January
Island Lake, WI
- Average humidity in January: 92%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (76%).
Average rainfall in January
Island Lake, WI
- Average rainfall in January: 0.94"
The wettest month (with the highest rainfall) is June (4.06").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in January
Island Lake, WI
- Average rainfall days in January: 3.7 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (3.7 days).
Average snowfall in January
Island Lake, WI
- Average snowfall in January: 5.43"
The month with the highest snowfall is February (7.44").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Island Lake, WI
- Average snowfall days in January: 17.8 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Island Lake, WI
- Average daylight in January: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January: 2h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and February (Average sunshine: 2h and 48min).
Average sunshine days in January
Island Lake, WI
- Average sunshine days in January: 12.4 days
The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in January
Island Lake, WI
- Average UV index in January: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in January
Island Lake, WI
- Average cloud cover in January: 72
The months with the most cloud cover are January and February (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in January
Island Lake, WI
- Average visibility in January: 4mi
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Island Lake, Wisconsin, USA
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