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, with its high-temperature average of 27.5°F (-2.5°C) and a low-temperature average of 16.5°F (-8.6°C), is the coldest month.Humidity
January and February, with an average relative humidity of 83%, are the most humid months.Rainfall
In January, the rain falls for 5.4 days. Throughout January, 1.14" (29mm) of precipitation is accumulated. Throughout the year, in Round Lake Beach, there are 142.3 rainfall days, and 21.97" (558mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Round Lake Beach. The month with the most snowfall is January, when snow falls for 13.7 days and typically aggregates up to 3.58" (91mm) of snow.Daylight
In Round Lake Beach, the average length of the day in January is 9h and 30min.On the first day of the month, sunrise is at 7:21 am and sunset at 4:30 pm. On the last day of January, sunrise is at 7:07 am and sunset at 5:04 pm CST.
Sunshine
The month with the least sunshine is January, with an average of 3.7h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: In January, an average UV index of 1 transforms into the following instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in January?
When does it snow the most in Round Lake Beach?
How much does it snow in January?
How many hours of daylight does Round Lake Beach have in January?
When are sunrise and sunset in January in Round Lake Beach?
What is the month with the least sunshine?
How many hours of sunshine does Round Lake Beach have in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Round Lake Beach, IL
- Average high temperature in January: 27.5°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in January: 16.5°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in January
Round Lake Beach, IL
- Average pressure in January: 30.1"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Round Lake Beach, IL
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in January
Round Lake Beach, IL
- Average humidity in January: 83%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Round Lake Beach, IL
- Average rainfall in January: 1.14"
The wettest month (with the highest rainfall) is April (2.72").
The driest month (with the least rainfall) is December (0.98").
Average rainfall days in January
Round Lake Beach, IL
- Average rainfall days in January: 5.4 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is February (5 days).
Average snowfall in January
Round Lake Beach, IL
- Average snowfall in January: 3.58"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Round Lake Beach, IL
- Average snowfall days in January: 13.7 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Round Lake Beach, IL
- 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: 3h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Round Lake Beach, IL
- Average sunshine days in January: 13.7 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in January
Round Lake Beach, IL
- 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
Round Lake Beach, IL
- Average cloud cover in January: 61
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 30).
Average visibility in January
Round Lake Beach, IL
- 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).
Round Lake Beach, Illinois, USA
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