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
With average temperatures fluctuating between a high of 28.2°F (-2.1°C) and a low of 16.2°F (-8.8°C), January stands out as the coldest month.Humidity
In January, the average relative humidity is 83%.Rainfall
In Millbrook, during January, the rain falls for 6.3 days and regularly aggregates up to 1.85" (47mm) of precipitation. In Millbrook, during the entire year, the rain falls for 168.3 days and collects up to 35.47" (901mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. January is the month with the most snowfall. Snow falls for 13.4 days and accumulates 4.88" (124mm) of snow.Daylight
The average length of the day in January in Millbrook is 9h and 34min.On the first day of the month, sunrise is at 7:20 am and sunset at 4:34 pm. On the last day of January, sunrise is at 7:07 am and sunset at 5:08 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 3.8h of sunshine.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Millbrook. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. It's recommended to limit sun exposure when its radiation is at its peak during midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How cold is January?
What is the average humidity in January?
How much does it rain in January?
What is the snowiest month?
How many days does it snow in January?
How many hours of daylight does Millbrook have in January?
When are sunrise and sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January?
What is the month with the lowest UV index?
How high is the UV index in January in Millbrook?
Average temperature in January
Millbrook, IL
- Average high temperature in January: 28.2°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in January: 16.2°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in January
Millbrook, IL
- Average pressure in January: 30.12"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Millbrook, IL
- Average wind speed in January: 9.8mph
The windiest months (with the highest average wind speed) are January and April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in January
Millbrook, IL
- Average humidity in January: 83%
The months with the highest relative humidity are July and August (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Millbrook, IL
- Average rainfall in January: 1.85"
The wettest month (with the highest rainfall) is May (4.88").
The driest month (with the least rainfall) is November (1.73").
Average rainfall days in January
Millbrook, IL
- Average rainfall days in January: 6.3 days
The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is February (6 days).
Average snowfall in January
Millbrook, IL
- Average snowfall in January: 4.88"
The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Millbrook, IL
- Average snowfall days in January: 13.4 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Millbrook, IL
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 3h and 5min
The months with the most sunshine are June and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Millbrook, IL
- Average sunshine days in January: 13.3 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in January
Millbrook, 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
Millbrook, IL
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in January
Millbrook, IL
- Average visibility in January: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Millbrook, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location