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
Oswego's January weather, with an average high temperature of 28.4°F (-2°C) and an average low temperature of 16.7°F (-8.5°C), tends to be the coldest of the year.Humidity
The months with the highest humidity in Oswego are January, February, July and August, with an average relative humidity of 83%.Rainfall
In Oswego, in January, during 5 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. In Oswego, Illinois, during the entire year, the rain falls for 133.1 days and collects up to 16.93" (430mm) of precipitation.Snowfall
January through April, October through December are months with snowfall in Oswego. The month with the most snowfall is January, when snow falls for 10.7 days and typically aggregates up to 1.73" (44mm) of snow.Daylight
The average length of the day in January in Oswego is 9h and 34min.On the first day of January, sunrise is at 7:20 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:07 pm CST.
Sunshine
With an average of 3.8h of sunshine, January has the least sunshine of the year.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Oswego. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 1 during January morphs into the following directions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Oswego?
How cold is January in Oswego?
What are the most humid months in Oswego?
What is the average humidity in January in Oswego?
How many days does it rain in January in Oswego?
What is the snowiest month in Oswego?
How much does it snow in Oswego in January?
How many hours of daylight does Oswego have in January?
What time are sunrise and sunset in January in Oswego?
What is the month with the least sunshine in Oswego?
How long on average sun shines in January in Oswego?
What are the months with the lowest UV index in Oswego?
What is the UV index intensity in January in Oswego?
Average temperature in January
Oswego, IL
- Average high temperature in January: 28.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in January: 16.7°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in January
Oswego, 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
Oswego, IL
- Average wind speed in January: 9.6mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in January
Oswego, IL
- Average humidity in January: 83%
The months with the highest relative humidity are January, February, July and August (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Oswego, IL
- Average rainfall in January: 0.87"
The wettest month (with the highest rainfall) is June (2.24").
The driest months (with the least rainfall) are November and December (0.75").
Average rainfall days in January
Oswego, IL
- Average rainfall days in January: 5 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in January
Oswego, IL
- Average snowfall in January: 1.73"
The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Oswego, IL
- Average snowfall days in January: 10.7 days
The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Oswego, IL
- Average daylight in January: 9h and 4min
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 5min
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
Oswego, IL
- Average sunshine days in January: 17 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in January
Oswego, 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
Oswego, IL
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in January
Oswego, 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).
Oswego, Illinois, USA
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