March weather forecast
Downers Grove, IL

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Weather in March

With spring in sight, March represents a significant warming period in Downers Grove compared to February. The month's weather showcases a rather abrupt shift from the dormant cold of winter, with snowfall dwindling to just 0.59" (15mm). The winds of March keep things brisk, ensuring a fresh touch to the increasingly warm days. This month heralds the onset of rain, replacing the snowflakes of winter with droplets of spring rain. The relative humidity drops a notch, indicating a drier atmosphere typical of this transitional period.

Temperature

The transition to March introduces an increase in the average high-temperature, shifting from an icy 32.5°F (0.3°C) in February to a frosty 45.1°F (7.3°C). Nighttime temperature lowers to an average of 31.5°F (-0.3°C) in March.

Humidity

The average relative humidity in March is 75%.

Rainfall

In Downers Grove, during March, the rain falls for 9.1 days and regularly aggregates up to 0.75" (19mm) of precipitation. Throughout the year, there are 118.5 rainfall days, and 13.74" (349mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In March, it is snowing for 4.9 days. Throughout March, 0.59" (15mm) of snow is accumulated. Throughout the year, there are 34.9 snowfall days, and 7.2" (183mm) 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 6:25 am and sunset at 5:42 pm CST. On the last day of the month, sunrise is at 6:35 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

In Downers Grove, the average sunshine in March is 6h.

UV index

The average daily maximum UV index in March is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 2 during March leads to these advisories:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.

Frequently asked questions

What is the average March temperature?

The high-temperature, in March, in Downers Grove, records 45.1°F (7.3°C), while the low-temperature is 31.5°F (-0.3°C).

What is the average humidity in March?

In March, the average relative humidity is 75%.

How much does it rain in March?

In Downers Grove, during March, the rain falls for 9.1 days and regularly aggregates up to 0.75" (19mm) of precipitation.

How many days does it snow in March in Downers Grove?

In Downers Grove, during March, snow falls for 4.9 days and regularly aggregates up to 0.59" (15mm) of snow.

What is the average length of the day in March?

The average day length in March is 11h and 58min.

When are sunrise and sunset in March in Downers Grove?

On the first day of March, sunrise is at 6:25 am and sunset at 5:42 pm CST. On the last day of the month, sunrise is at 6:35 am and sunset at 7:16 pm CDT.

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

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

The average sunshine duration in March is 6h.

What is the UV index intensity in March?

In March, the average daily maximum UV index is 2. 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 March
Downers Grove, IL

Average temperature in March - Downers Grove, IL
  • Average high temperature in March: 45.1°F

The warmest month (with the highest average high temperature) is July (82.4°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 (66.4°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

Average pressure in March
Downers Grove, IL

Average pressure in March - Downers Grove, 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).

Average wind speed in March
Downers Grove, IL

Average wind speed in March - Downers Grove, IL
  • Average wind speed in March: 9.2mph

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

Average humidity in March
Downers Grove, IL

Average humidity in March - Downers Grove, IL
  • Average humidity in March: 75%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).

Average rainfall in March
Downers Grove, IL

Average rainfall in March - Downers Grove, IL
  • Average rainfall in March: 0.75"

The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is December (0.63").

Average rainfall days in March
Downers Grove, IL

Average rainfall days in March - Downers Grove, IL
  • Average rainfall days in March: 9.1 days

The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is February (4.2 days).

Average snowfall in March
Downers Grove, IL

Average snowfall in March - Downers Grove, IL
  • Average snowfall in March: 0.59"

The month with the highest snowfall is February (2.28").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in March
Downers Grove, IL

Average snowfall days in March - Downers Grove, IL
  • Average snowfall days in March: 4.9 days

The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in March /
Average sunshine in March
Downers Grove, IL

Average daylight in March / Average sunshine in March - Downers Grove, 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 August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in March
Downers Grove, IL

Average sunshine days in March - Downers Grove, IL
  • Average sunshine days in March: 17.4 days

The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is July (11.8 days).

Average UV index in March
Downers Grove, IL

Average UV index in March - Downers Grove, 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 January (UV index 1).

Average cloud cover in March
Downers Grove, IL

Average cloud cover in March - Downers Grove, IL
  • Average cloud cover in March: 51

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in March
Downers Grove, IL

Average visibility in March - Downers Grove, 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).

Downers Grove, Illinois, USA

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