March weather forecast
Mount Vernon, IL

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Weather in March

The first month of the spring, March, is a cool month in Mount Vernon, Illinois, with an average temperature ranging between min 38.3°F (3.5°C) and max 54.3°F (12.4°C).

Temperature

As March arrives, Mount Vernon's weather shows an increase in high-temperatures, moving from February's icy 42.4°F (5.8°C) to a fresh 54.3°F (12.4°C). During the month of March, an average low-temperature of 38.3°F (3.5°C) is recorded.

Humidity

The average relative humidity in March is 77%.

Rainfall

In Mount Vernon, in March, during 14.1 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. In Mount Vernon, Illinois, during the entire year, the rain falls for 145.8 days and collects up to 29.13" (740mm) of precipitation.

Snowfall

Months with snowfall in Mount Vernon, Illinois, are January through April, November and December. In Mount Vernon, in March, during 1.8 snowfall days, 1.02" (26mm) of snow is typically accumulated. In Mount Vernon, during the entire year, snow falls for 15.4 days and aggregates up to 5.87" (149mm) of snow.

Daylight

In March, the average length of the day is 11h and 59min.
On the first day of the month, sunrise is at 6:26 am and sunset at 5:49 pm CST. On the last day of March, sunrise is at 6:40 am and sunset at 7:18 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 Mount Vernon, the average sunshine in March is 6.5h.

UV index

In Mount Vernon, the average daily maximum UV index in March is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 4 during March translates into the following directions:
Take necessary precautions - Suggestions to elude sunburn are provided. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
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Frequently asked questions

What is the usual temperature for Mount Vernon in March?

The high-temperature, in March, in Mount Vernon, records 54.3°F (12.4°C), while the low-temperature is 38.3°F (3.5°C).

What is the average humidity in March in Mount Vernon?

In March, the average relative humidity in Mount Vernon, Illinois, is 77%.

How many days does it rain in March in Mount Vernon?

In Mount Vernon, Illinois, in March, during 14.1 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

How much does it snow in Mount Vernon in March?

In March, in Mount Vernon, Illinois, it is snowing for 1.8 days. Throughout March, 1.02" (26mm) of snow is accumulated.

How many hours of daylight does Mount Vernon have in March?

In March, the average day length in Mount Vernon is 11h and 59min.

What time are sunrise and sunset in March in Mount Vernon?

On the first day of March, sunrise is at 6:26 am and sunset at 5:49 pm CST. On the last day of the month, sunrise is at 6:40 am and sunset at 7:18 pm CDT.

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

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 in Mount Vernon?

In March, the average sunshine duration is 6.5h.

What is the UV index reading in March in Mount Vernon?

The average daily maximum UV index in March is 4. A UV Index estimate 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
Mount Vernon, IL

Average temperature in March - Mount Vernon, IL
  • Average high temperature in March: 54.3°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in March: 38.3°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

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Average pressure in March
Mount Vernon, IL

Average pressure in March - Mount Vernon, IL
  • Average pressure in March: 30.08"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in March
Mount Vernon, IL

Average wind speed in March - Mount Vernon, IL
  • Average wind speed in March: 9.8mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.9mph).

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Average humidity in March
Mount Vernon, IL

Average humidity in March - Mount Vernon, IL
  • Average humidity in March: 77%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in March
Mount Vernon, IL

Average rainfall in March - Mount Vernon, IL
  • Average rainfall in March: 2.6"

The wettest month (with the highest rainfall) is April (3.78").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in March
Mount Vernon, IL

Average rainfall days in March - Mount Vernon, IL
  • Average rainfall days in March: 14.1 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (7.5 days).

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Average snowfall in March
Mount Vernon, IL

Average snowfall in March - Mount Vernon, IL
  • Average snowfall in March: 1.02"

The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in March
Mount Vernon, IL

Average snowfall days in March - Mount Vernon, IL
  • Average snowfall days in March: 1.8 days

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in March /
Average sunshine in March
Mount Vernon, IL

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in March: 6h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in March
Mount Vernon, IL

Average sunshine days in March - Mount Vernon, IL
  • Average sunshine days in March: 14.8 days

The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is May (11.3 days).

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Average UV index in March
Mount Vernon, IL

Average UV index in March - Mount Vernon, IL
  • Average UV index in March: 4

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).

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Average cloud cover in March
Mount Vernon, IL

Average cloud cover in March - Mount Vernon, IL
  • Average cloud cover in March: 47

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).

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Average visibility in March
Mount Vernon, IL

Average visibility in March - Mount Vernon, 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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Mount Vernon, Illinois, USA

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