January weather forecast
Carol Stream, IL

Share

Weather in January

January, like December, is another subzero cold winter month in Carol Stream, Illinois, with an average temperature varying between 16.7°F (-8.5°C) and 27.9°F (-2.3°C).

Temperature

With average temperatures fluctuating between a high of 27.9°F (-2.3°C) and a low of 16.7°F (-8.5°C), January stands out as the coldest month.

Humidity

The months with the highest humidity are January and February, with an average relative humidity of 83%.

Rainfall

In January, the rain falls for 4.1 days. Throughout January, 0.55" (14mm) of precipitation is accumulated. Throughout the year, there are 119.1 rainfall days, and 10.83" (275mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Carol Stream. The month with the most snowfall is January, when snow falls for 9.3 days and typically aggregates up to 1.5" (38mm) of snow.

Daylight

In January, the average length of the day is 9h and 32min.
On the first day of the month, sunrise is at 7:20 am and sunset at 4:31 pm. On the last day of January, sunrise is at 7:06 am and sunset at 5:05 pm CST.

Sunshine

With an average of 3.7h 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. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily high UV index of 1 during January translates into the following recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. The solar radiation around mid-day is intense; avoid the Sun and stay safe. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.

Frequently asked questions

What month is the coldest?

January stands out as Carol Stream's coldest month, with an average high-temperature of 27.9°F (-2.3°C) and a low-temperature of 16.7°F (-8.5°C).

How cold is it in January?

The high-temperature during January is 27.9°F (-2.3°C) and the low-temperature is 16.7°F (-8.5°C).

What are the most humid months?

January and February, with an average relative humidity of 83%, are most humid months.

What is the average humidity in January?

The average relative humidity in January is 83%.

How many days does it rain in January?

In Carol Stream, Illinois, in January, during 4.1 rainfall days, 0.55" (14mm) of precipitation is typically accumulated.

What is the snowiest month?

The month with the most snowfall is January, when snow falls for 9.3 days and typically aggregates up to 1.5" (38mm) of snow.

How many days does it snow in January?

In Carol Stream, Illinois, in January, during 9.3 snowfall days, 1.5" (38mm) of snow is typically accumulated.

What is the average length of the day in January?

In Carol Stream, the average day length in January is 9h and 32min.

When are sunrise and sunset in January?

On the first day of January, sunrise is at 7:20 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:05 pm CST.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 3.7h of sunshine.

How long on average sun shines in January in Carol Stream?

The average sunshine duration in January is 3.7h.

What is the month with the lowest UV index?

The months with the lowest UV index are January and December, with an average maximum UV index of 1.

What is the UV index reading in January?

In Carol Stream, the average daily maximum UV index in January is 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Carol Stream, IL

Average temperature in January - Carol Stream, IL
  • Average high temperature in January: 27.9°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in January: 16.7°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

Average pressure in January
Carol Stream, IL

Average pressure in January - Carol Stream, 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
Carol Stream, IL

Average wind speed in January - Carol Stream, IL
  • Average wind speed in January: 9.8mph

The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

Average humidity in January
Carol Stream, IL

Average humidity in January - Carol Stream, 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
Carol Stream, IL

Average rainfall in January - Carol Stream, IL
  • Average rainfall in January: 0.55"

The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are February, November and December (0.51").

Average rainfall days in January
Carol Stream, IL

Average rainfall days in January - Carol Stream, IL
  • Average rainfall days in January: 4.1 days

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (4.1 days).

Average snowfall in January
Carol Stream, IL

Average snowfall in January - Carol Stream, IL
  • Average snowfall in January: 1.5"

The month with the highest snowfall is January (1.5").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in January
Carol Stream, IL

Average snowfall days in January - Carol Stream, IL
  • Average snowfall days in January: 9.3 days

The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Carol Stream, IL

Average daylight in January / Average sunshine in January - Carol Stream, 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 months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in January
Carol Stream, IL

Average sunshine days in January - Carol Stream, IL
  • Average sunshine days in January: 19.8 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (11.3 days).

Average UV index in January
Carol Stream, IL

Average UV index in January - Carol Stream, 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
Carol Stream, IL

Average cloud cover in January - Carol Stream, 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 32).

Average visibility in January
Carol Stream, IL

Average visibility in January - Carol Stream, 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).

Carol Stream, Illinois, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location