March weather forecast
Mount Vernon, WA

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Weather in March

March brings a noticeable shift in weather conditions in Mount Vernon. The average low temperature starts to rise arriving at 38.8°F (3.8°C), while the high temperature pushes its way up to 48.2°F (9°C). With an average of 3.74" (95mm) of rainfall, this month can be expected to have a fair number of wet days. There is also a decrease in snowfall, which drops to just 1.38" (35mm) across 1.9 days. Daylight hours are progressively stretching to 11.9 hours on average.

Temperature

The shift into March in Mount Vernon reveals an average high-temperature of a still chilly 48.2°F (9°C), closely mirroring February's climate. Mount Vernon, during the nights of March, experiences an average temperature drop to an icy 38.8°F (3.8°C).

Humidity

In March, the average relative humidity in Mount Vernon is 82%.

Rainfall

In Mount Vernon, in March, it is raining for 20.8 days, with typically 3.74" (95mm) of accumulated precipitation. Throughout the year, in Mount Vernon, there are 185.2 rainfall days, and 34.72" (882mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. In March, in Mount Vernon, it is snowing for 1.9 days. Throughout March, 1.38" (35mm) of snow is accumulated. In Mount Vernon, during the entire year, snow falls for 9.9 days and aggregates up to 7.91" (201mm) of snow.

Daylight

The average length of the day in March in Mount Vernon is 11h and 57min.
On the first day of March, sunrise is at 6:48 am and sunset at 5:54 pm PST. On the last day of the month, sunrise is at 6:47 am and sunset at 7:39 pm PDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from PDT to PST.

Sunshine

The average sunshine in March is 5.7h.

UV index

In Mount Vernon, Washington, the average daily maximum UV index in March is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high UV index of 3 in March translates into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What is the average March temperature in Mount Vernon?

The high-temperature, in March, in Mount Vernon, is 48.2°F (9°C), while the low-temperature averages to 38.8°F (3.8°C).

What is the average humidity in March in Mount Vernon?

The average relative humidity in March in Mount Vernon is 82%.

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

In Mount Vernon, in March, during 20.8 rainfall days, 3.74" (95mm) of precipitation is typically accumulated.

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

In Mount Vernon, in March, snow falls for 1.9 days, with typically accumulated 1.38" (35mm) of snow.

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

The average day length in March is 11h and 57min.

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

In March, on the first day of the month, sunrise is at 6:48 am and sunset at 5:54 pm PST. On the last day of the month, sunrise is at 6:47 am and sunset at 7:39 pm PDT.

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 PST to PDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How long on average sun shines in March in Mount Vernon?

The average sunshine duration in March is 5.7h.

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

In Mount Vernon, Washington, the average daily maximum UV index in March is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe 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 March
Mount Vernon, WA

Average temperature in March - Mount Vernon, WA
  • Average high temperature in March: 48.2°F

The warmest months (with the highest average high temperature) are July and August (68.4°F).
The month with the lowest average high temperature is December (42.6°F).

  • Average low temperature in March: 38.8°F

The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is February (36.1°F).

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Average pressure in March
Mount Vernon, WA

Average pressure in March - Mount Vernon, WA
  • Average pressure in March: 30.01"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

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Average wind speed in March
Mount Vernon, WA

Average wind speed in March - Mount Vernon, WA
  • Average wind speed in March: 6.8mph

The windiest month (with the highest average wind speed) is November (7.5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in March
Mount Vernon, WA

Average humidity in March - Mount Vernon, WA
  • Average humidity in March: 82%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is July (75%).

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Average rainfall in March
Mount Vernon, WA

Average rainfall in March - Mount Vernon, WA
  • Average rainfall in March: 3.74"

The wettest month (with the highest rainfall) is November (4.96").
The driest month (with the least rainfall) is July (0.63").

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Average rainfall days in March
Mount Vernon, WA

Average rainfall days in March - Mount Vernon, WA
  • Average rainfall days in March: 20.8 days

The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (7.2 days).

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Average snowfall in March
Mount Vernon, WA

Average snowfall in March - Mount Vernon, WA
  • Average snowfall in March: 1.38"

The month with the highest snowfall is February (3.54").
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, WA

Average snowfall days in March - Mount Vernon, WA
  • Average snowfall days in March: 1.9 days

The month with the highest number of snowfall days is February (3.6 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, WA

Average daylight in March / Average sunshine in March - Mount Vernon, WA
  • Average daylight in March: 11h and 5min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in March: 5h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).

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Average sunshine days in March
Mount Vernon, WA

Average sunshine days in March - Mount Vernon, WA
  • Average sunshine days in March: 8.6 days

The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is November (8.1 days).

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Average UV index in March
Mount Vernon, WA

Average UV index in March - Mount Vernon, WA
  • Average UV index in March: 3

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in March
Mount Vernon, WA

Average cloud cover in March - Mount Vernon, WA
  • Average cloud cover in March: 57

The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in March
Mount Vernon, WA

Average visibility in March - Mount Vernon, WA
  • 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, Washington, USA

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