January weather forecastAurora, IL
January
Weather in January
As the winter progresses from December, January in Aurora, Illinois encounters a blend of low temperatures and high humidity. The daylight hours are still relatively short, leading to long, chilly nights. Notably, January experiences the coldest low temperatures of the year which drop down to 16°F (-8.9°C). These conditions can make this time of year seem particularly frosty, especially with occasional snowfall. Although the pressure remains high throughout this month, it does not significantly alter the winter weather.Temperature
January stands out as Aurora's coldest month, with an average high-temperature of 27.9°F (-2.3°C) and a low-temperature of 16°F (-8.9°C).Humidity
January, February and July, with an average relative humidity of 83%, are the most humid months in Aurora.Rainfall
In Aurora, in January, during 4.3 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. In Aurora, Illinois, during the entire year, the rain falls for 120.4 days and collects up to 12.32" (313mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. January is the month with the most snowfall. Snow falls for 9.1 days and accumulates 1.69" (43mm) of snow.Daylight
In Aurora, Illinois, the average length of the day in January is 9h and 34min.On the first day of the month, sunrise is at 7:20 am and sunset at 4:33 pm. On the last day of January, in Aurora, sunrise is at 7:06 am and sunset at 5:06 pm CST.
Sunshine
With an average of 3.8h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index in Aurora are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: In January, the average maximum UV index of 1 translates into the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Aurora, IL
- Average high temperature in January: 27.9°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in January: 16°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (16°F).
Average pressure in January
Aurora, IL
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Aurora, IL
- Average wind speed in January: 9.8mph
The windiest months (with the highest average wind speed) are January and February (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in January
Aurora, IL
- Average humidity in January: 83%
The months with the highest relative humidity are January, February and July (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Aurora, IL
- Average rainfall in January: 0.59"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is February (0.51").
Average rainfall days in January
Aurora, IL
- Average rainfall days in January: 4.3 days
The month with the highest number of rainy days is June (15.5 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in January
Aurora, IL
- Average snowfall in January: 1.69"
The month with the highest snowfall is January (1.69").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Aurora, IL
- Average snowfall days in January: 9.1 days
The month with the highest number of snowfall days is January (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Aurora, IL
- Average daylight in January: 9h and 36min
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 12min).
- Average sunshine in January: 3h and 48min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Aurora, IL
- Average sunshine days in January: 19.6 days
The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is June (11.4 days).
Average UV index in January
Aurora, IL
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Aurora, IL
- Average cloud cover in January: 61
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in January
Aurora, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
