March weather forecast
DeKalb, IL

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Weather in March

March marks the advent of spring in DeKalb, Illinois, with temperatures gradually inching upwards. A notable weather pattern during this transition period is an increase in rainfall from 1.65" (42mm) to 2.05" (52mm), replacing the substantial decrease in snowfall. The month brings with it the renewal of flora, landscapes rejuvenated after the winter's harsh grasp. Longer daylight hours are a welcome sight, with an overall uplift in town's spirits. March weather in DeKalb is a mix of prolonged rainy days and the beginnings of a promising spring bloom.

Temperature

The arrival of March in DeKalb signals an increase in the average high-temperature, moving from a freezing cold 31.1°F (-0.5°C) in February to a frosty 44.6°F (7°C). The mean low-temperature during March nights is a subzero cold 30.2°F (-1°C).

Humidity

The average relative humidity in March is 77%.

Rainfall

In DeKalb, in March, it is raining for 12.2 days, with typically 2.05" (52mm) of accumulated precipitation. In DeKalb, during the entire year, the rain falls for 152.6 days and collects up to 32.09" (815mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in DeKalb. In March, in DeKalb, it is snowing for 5.6 days. Throughout March, 2.17" (55mm) of snow is accumulated. Throughout the year, there are 44.3 snowfall days, and 17.87" (454mm) of snow is accumulated.

Daylight

In DeKalb, the average length of the day in March is 11h and 58min.
On the first day of March in DeKalb, Illinois, sunrise is at 6:28 am and sunset at 5:45 pm CST. On the last day of the month, sunrise is at 6:37 am and sunset at 7:19 pm CDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from CDT to CST.

Sunshine

In March, the average sunshine is 6h.

UV index

In DeKalb, the average daily maximum UV index in March is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index, 3 during March, leads to the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
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Frequently asked questions

How cold is it in DeKalb in March?

March temperatures vary between a high-temperature of 44.6°F (7°C) and a low-temperature of 30.2°F (-1°C).

What is the average humidity in March in DeKalb?

In DeKalb, the average relative humidity in March is 77%.

How many days does it rain in March in DeKalb?

In DeKalb, in March, it is raining for 12.2 days, with typically 2.05" (52mm) of accumulated precipitation.

How much does it snow in DeKalb in March?

In March, in DeKalb, it is snowing for 5.6 days. Throughout March, 2.17" (55mm) of snow is accumulated.

What is the average length of the day in March in DeKalb?

In DeKalb, Illinois, the average day length in March is 11h and 58min.

When is the sunrise / sunset in March in DeKalb?

In March, on the first day of the month, sunrise is at 6:28 am and sunset at 5:45 pm CST. On the last day of the month, in DeKalb, Illinois, sunrise is at 6:37 am and sunset at 7:19 pm CDT.

When does Daylight Saving Time (DST) start in March in DeKalb?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in DeKalb, Illinois, and the time zone changes from CST to CDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How long on average sun shines in March in DeKalb?

In DeKalb, the average sunshine duration in March is 6h.

What is the UV index reading in March in DeKalb?

In March, the average daily maximum UV index in DeKalb is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to 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 March
DeKalb, IL

Average temperature in March - DeKalb, IL
  • Average high temperature in March: 44.6°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 March: 30.2°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).

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Average pressure in March
DeKalb, IL

Average pressure in March - DeKalb, IL
  • Average pressure in March: 30.09"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).

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Average wind speed in March
DeKalb, IL

Average wind speed in March - DeKalb, IL
  • Average wind speed in March: 9.7mph

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).

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Average humidity in March
DeKalb, IL

Average humidity in March - DeKalb, IL
  • Average humidity in March: 77%

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

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Average rainfall in March
DeKalb, IL

Average rainfall in March - DeKalb, IL
  • Average rainfall in March: 2.05"

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

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Average rainfall days in March
DeKalb, IL

Average rainfall days in March - DeKalb, IL
  • Average rainfall days in March: 12.2 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).

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Average snowfall in March
DeKalb, IL

Average snowfall in March - DeKalb, IL
  • Average snowfall in March: 2.17"

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

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Average snowfall days in March
DeKalb, IL

Average snowfall days in March - DeKalb, IL
  • Average snowfall days in March: 5.6 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).

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

Average daylight in March / Average sunshine in March - DeKalb, IL
  • Average daylight in March: 12h and 0min

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 March: 6h and 0min

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).

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Average sunshine days in March
DeKalb, IL

Average sunshine days in March - DeKalb, IL
  • Average sunshine days in March: 14.4 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).

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Average UV index in March
DeKalb, IL

Average UV index in March - DeKalb, IL
  • Average UV index in March: 3

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).

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Average cloud cover in March
DeKalb, IL

Average cloud cover in March - DeKalb, IL
  • Average cloud cover in March: 51

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).

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Average visibility in March
DeKalb, IL

Average visibility in March - DeKalb, IL
  • Average visibility in March: 6mi

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).

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DeKalb, Illinois, USA

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