February weather forecast
DeKalb, IL

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Weather in February

The meteorological patterns of February maintain the winter's cold grip on DeKalb. This city sees a slight increase in temperature highs and lows, contrasted by a notable decrease in snowfall from 5.55" (141mm) to 3.86" (98mm). While the cold continues, the amount of daylight hours experiences a gradual increase, signaling the beginning of the end for winter in Illinois. A unique characteristic of February is the relatively clear skies, offering glimpses of the sun more often than the preceding winter months. Overall, the weather lends itself to winter activities and the anticipation of a warmer spring.

Temperature

February's presence in DeKalb, Illinois, records an average high-temperature of a still subzero cold 31.1°F (-0.5°C), closely mirroring January's climate. DeKalb experiences an average nighttime temperature of 18.1°F (-7.7°C) in the month of February.

Humidity

In DeKalb, Illinois, the average relative humidity in February is 84%.

Rainfall

The month with the least rainfall is February, when the rain falls for 4.7 days and typically collects 1.65" (42mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In DeKalb, in February, during 10.6 snowfall days, 3.86" (98mm) of snow is typically accumulated. Throughout the year, there are 44.3 snowfall days, and 17.87" (454mm) of snow is accumulated.

Daylight

In February, the average length of the day is 10h and 37min.
On the first day of February, sunrise is at 7:07 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 5:44 pm CST.

Sunshine

In DeKalb, the average sunshine in February is 3.8h.

UV index

In February, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 2 in February translates into the following instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The solar radiation around mid-day is intense; avoid the Sun and stay safe. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.

Frequently asked questions

How cold is February?

In DeKalb, 31.1°F (-0.5°C) is the average high-temperature and 18.1°F (-7.7°C) is the average low-temperature during February.

What is the average humidity in February?

The average relative humidity in February is 84%.

What is the driest month?

The month with the least rainfall is February, when the rain falls for 4.7 days and typically collects 1.65" (42mm) of precipitation.

How many days does it rain in February?

In DeKalb, Illinois, during February, the rain falls for 4.7 days and regularly aggregates up to 1.65" (42mm) of precipitation.

How many days does it snow in February in DeKalb?

In DeKalb, during February, snow falls for 10.6 days and regularly aggregates up to 3.86" (98mm) of snow.

How many hours of daylight does DeKalb have in February?

In DeKalb, the average day length in February is 10h and 37min.

When are sunrise and sunset in February?

In February, on the first day of the month, sunrise is at 7:07 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 5:44 pm CST.

How long on average sun shines in February?

In February, the average sunshine duration is 3.8h.

What is the UV index intensity in February?

The average daily maximum UV index in February is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to Sun's UV rays.
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 February
DeKalb, IL

Average temperature in February - DeKalb, IL
  • Average high temperature in February: 31.1°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in February: 18.1°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

Average pressure in February
DeKalb, IL

Average pressure in February - DeKalb, IL
  • Average pressure in February: 30.1"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 February
DeKalb, IL

Average wind speed in February - DeKalb, IL
  • Average wind speed in February: 9.9mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

Average humidity in February
DeKalb, IL

Average humidity in February - DeKalb, IL
  • Average humidity in February: 84%

The months with the highest relative humidity are January and July (85%).
The months with the lowest relative humidity are April and October (75%).

Average rainfall in February
DeKalb, IL

Average rainfall in February - DeKalb, IL
  • Average rainfall in February: 1.65"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.65").

Average rainfall days in February
DeKalb, IL

Average rainfall days in February - DeKalb, IL
  • Average rainfall days in February: 4.7 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (4.7 days).

Average snowfall in February
DeKalb, IL

Average snowfall in February - DeKalb, IL
  • Average snowfall in February: 3.86"

The month with the highest snowfall is January (5.55").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in February
DeKalb, IL

Average snowfall days in February - DeKalb, IL
  • Average snowfall days in February: 10.6 days

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in February /
Average sunshine in February
DeKalb, IL

Average daylight in February / Average sunshine in February - DeKalb, IL
  • Average daylight in February: 10h 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 February: 3h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in February
DeKalb, IL

Average sunshine days in February - DeKalb, IL
  • Average sunshine days in February: 13.4 days

The month with the most sunshine days is November (17.2 days).
The months with the least sunshine days are June and July (10.3 days).

Average UV index in February
DeKalb, IL

Average UV index in February - DeKalb, IL
  • Average UV index in February: 2

The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in February
DeKalb, IL

Average cloud cover in February - DeKalb, IL
  • Average cloud cover in February: 59

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 35).

Average visibility in February
DeKalb, IL

Average visibility in February - DeKalb, IL
  • Average visibility in February: 5mi

The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).

DeKalb, Illinois, USA

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