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
Temperature records in Oak Park, Illinois, mark January as the coldest month, with highs averaging 28.9°F (-1.7°C) and lows at 19.4°F (-7°C).Humidity
The most humid month in Oak Park is January, with an average relative humidity of 82%.Rainfall
In Oak Park, Illinois, during January, the rain falls for 6.5 days and regularly aggregates up to 1.69" (43mm) of precipitation. Throughout the year, there are 157.8 rainfall days, and 33.7" (856mm) of precipitation is accumulated.Snowfall
Months with snowfall in Oak Park are January through May, October through December. In Oak Park, Illinois, in January, snow falls for 10.8 days, with typically accumulated 4.21" (107mm) of snow. In Oak Park, during the entire year, snow falls for 40.3 days and aggregates up to 16.81" (427mm) of snow.Daylight
In January, the average length of the day is 9h and 33min.On the first day of January in Oak Park, sunrise is at 7:18 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:04 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 reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 1 in January translates into these instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest in Oak Park?
How cold is January in Oak Park?
What is the most humid month in Oak Park?
What is the average humidity in January in Oak Park?
How many days does it rain in January in Oak Park?
How many days does it snow in January in Oak Park?
What is the average length of the day in January in Oak Park?
When is the sunrise / sunset in January in Oak Park?
What is the month with the least sunshine in Oak Park?
How many hours of sunshine does Oak Park have in January?
When is the lowest UV index in Oak Park?
How high is the UV index in January in Oak Park?
Average temperature in January
Oak Park, IL
- Average high temperature in January: 28.9°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 (28.9°F).
- Average low temperature in January: 19.4°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in January
Oak Park, 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
Oak Park, IL
- Average wind speed in January: 11.1mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in January
Oak Park, IL
- Average humidity in January: 82%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Oak Park, IL
- Average rainfall in January: 1.69"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is December (1.57").
Average rainfall days in January
Oak Park, IL
- Average rainfall days in January: 6.5 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in January
Oak Park, IL
- Average snowfall in January: 4.21"
The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Oak Park, IL
- Average snowfall days in January: 10.8 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Oak Park, 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 12min).
- Average sunshine in January: 3h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Oak Park, IL
- Average sunshine days in January: 14.3 days
The month with the most sunshine days is December (16.7 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in January
Oak Park, IL
- Average UV index in January: 1
The months with the highest UV index are June, 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
Oak Park, 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 August (Cloud cover 27).
Average visibility in January
Oak Park, IL
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Oak Park, Illinois, USA
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