January weather forecastWinthrop Harbor, IL
January
Weather in January
January, the same as December, in Winthrop Harbor, Illinois, is a freezing cold winter month, with an average temperature varying between 18.3°F (-7.6°C) and 27.9°F (-2.3°C).Temperature
In Winthrop Harbor, the lowest temperatures are generally noted in January, averaging a high of 27.9°F (-2.3°C) and a low of 18.3°F (-7.6°C).Humidity
With an average relative humidity of 83%, January is the most humid month.Rainfall
In Winthrop Harbor, in January, it is raining for 6.4 days, with typically 1.06" (27mm) of accumulated precipitation. In Winthrop Harbor, during the entire year, the rain falls for 142.5 days and collects up to 21.5" (546mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Winthrop Harbor, in January, snow falls for 12.4 days, with typically accumulated 2.24" (57mm) of snow. In Winthrop Harbor, during the entire year, snow falls for 45.5 days and aggregates up to 9.37" (238mm) of snow.Daylight
In January, the average length of the day in Winthrop Harbor is 9h and 29min.On the first day of the month, sunrise is at 7:20 am and sunset at 4:28 pm. On the last day of January, sunrise is at 7:06 am and sunset at 5:03 pm CST.
Sunshine
With an average of 3.7h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index in Winthrop Harbor, Illinois, are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In January, the maximum UV index of 1 suggests these recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. 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. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Winthrop Harbor, IL
- Average high temperature in January: 27.9°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in January: 18.3°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in January
Winthrop Harbor, IL
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in January
Winthrop Harbor, IL
- Average wind speed in January: 11.9mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in January
Winthrop Harbor, IL
- Average humidity in January: 83%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in January
Winthrop Harbor, IL
- Average rainfall in January: 1.06"
The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in January
Winthrop Harbor, IL
- Average rainfall days in January: 6.4 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in January
Winthrop Harbor, IL
- Average snowfall in January: 2.24"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Winthrop Harbor, IL
- Average snowfall days in January: 12.4 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Winthrop Harbor, IL
- Average daylight in January: 9h and 30min
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 42min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in January
Winthrop Harbor, IL
- Average sunshine days in January: 12.4 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in January
Winthrop Harbor, 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
Winthrop Harbor, 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
Winthrop Harbor, 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).
