March weather forecast
Winnetka, IL

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Weather in March

March, the first month of the spring in Winnetka, is an icy month, with an average temperature ranging between min 31.5°F (-0.3°C) and max 42.3°F (5.7°C).

Temperature

With the arrival of March, the average high-temperature transitions from a subzero cold 31.8°F (-0.1°C) in February to an icy 42.3°F (5.7°C). Winnetka records a steady low-temperature average of 31.5°F (-0.3°C) during March.

Humidity

In Winnetka, the average relative humidity in March is 76%.

Rainfall

In Winnetka, in March, it is raining for 12.2 days, with typically 2.01" (51mm) of accumulated precipitation. Throughout the year, in Winnetka, there are 164.7 rainfall days, and 35.28" (896mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Winnetka. In Winnetka, during March, snow falls for 6.7 days and regularly aggregates up to 1.22" (31mm) of snow. Throughout the year, there are 47.6 snowfall days, and 17.8" (452mm) of snow is accumulated.

Daylight

The average length of the day in March is 11h and 58min.
On the first day of March, sunrise is at 6:24 am and sunset at 5:41 pm CST. On the last day of the month, sunrise is at 6:33 am and sunset at 7:16 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

The average sunshine in March in Winnetka is 6.1h.

UV index

In March, the average daily maximum UV index in Winnetka is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 2 during March leads to these advisories:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
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Frequently asked questions

How cold does it get in Winnetka in March?

The high-temperature, in March, in Winnetka, is 42.3°F (5.7°C), while the low-temperature averages to 31.5°F (-0.3°C).

What is the average humidity in March in Winnetka?

In Winnetka, the average relative humidity in March is 76%.

How much does it rain in Winnetka in March?

In March, in Winnetka, Illinois, the rain falls for 12.2 days. Throughout March, 2.01" (51mm) of precipitation is accumulated.

How many days does it snow in March in Winnetka?

In March, it is snowing for 6.7 days. Throughout March, 1.22" (31mm) of snow is accumulated.

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

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

When are sunrise and sunset in March in Winnetka?

On the first day of March in Winnetka, sunrise is at 6:24 am and sunset at 5:41 pm CST. On the last day of the month, sunrise is at 6:33 am and sunset at 7:16 pm CDT.

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

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Winnetka, 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 Winnetka?

In March, the average sunshine duration in Winnetka, Illinois, is 6.1h.

What is the UV index intensity in March in Winnetka?

In Winnetka, the average daily maximum UV index in March is 2. A UV Index reading of 2, and below, represents 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 March
Winnetka, IL

Average temperature in March - Winnetka, IL
  • Average high temperature in March: 42.3°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in March: 31.5°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in March
Winnetka, IL

Average pressure in March - Winnetka, 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
Winnetka, IL

Average wind speed in March - Winnetka, IL
  • Average wind speed in March: 10.4mph

The windiest month (with the highest average wind speed) is January (11.5mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).

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Average humidity in March
Winnetka, IL

Average humidity in March - Winnetka, IL
  • Average humidity in March: 76%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in March
Winnetka, IL

Average rainfall in March - Winnetka, IL
  • Average rainfall in March: 2.01"

The wettest months (with the highest rainfall) are May and June (4.57").
The driest month (with the least rainfall) is December (1.65").

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Average rainfall days in March
Winnetka, IL

Average rainfall days in March - Winnetka, IL
  • Average rainfall days in March: 12.2 days

The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (6.1 days).

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Average snowfall in March
Winnetka, IL

Average snowfall in March - Winnetka, IL
  • Average snowfall in March: 1.22"

The month with the highest snowfall is January (4.84").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in March
Winnetka, IL

Average snowfall days in March - Winnetka, IL
  • Average snowfall days in March: 6.7 days

The month with the highest number of snowfall days is January (13.1 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
Winnetka, IL

Average daylight in March / Average sunshine in March - Winnetka, 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 1min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in March
Winnetka, IL

Average sunshine days in March - Winnetka, IL
  • Average sunshine days in March: 13.3 days

The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is June (9.2 days).

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Average UV index in March
Winnetka, IL

Average UV index in March - Winnetka, IL
  • Average UV index in March: 2

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in March
Winnetka, IL

Average cloud cover in March - Winnetka, IL
  • Average cloud cover in March: 50

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in March
Winnetka, IL

Average visibility in March - Winnetka, IL
  • Average visibility in March: 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).

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Winnetka, Illinois, USA

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