March weather forecast
Duluth, MN

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The lit Aerial Lift Bridge and two long piers with lighthouses at the ends in Duluth, Minnesota
The lit Aerial Lift Bridge and two long piers with lighthouses at the ends in Duluth, Minnesota

Weather in March

As residents of Duluth transition from winter to spring, March brings forth an upturn in the weather. The chilly temperatures begin to thaw, with the days getting longer and brighter. There is a notable decrease in snowfall days from February's 18.1 to March's 13.3. Evidenced by the increase in average temperatures, the shift from frigid winter cold to milder spring-like conditions is clear. March envelopes the city with a respite from the bitter cold, presenting relatively warmer days with an increased duration of daylight.

Temperature

The arrival of March sees a shift in the average high-temperature, moving from a subzero cold 21°F (-6.1°C) in February to a cold 34°F (1.1°C). An average low-temperature of 21.4°F (-5.9°C) is common during the nights of March.

Humidity

In Duluth, the average relative humidity in March is 86%.

Rainfall

In Duluth, during March, the rain falls for 10 days and regularly aggregates up to 1.54" (39mm) of precipitation. In Duluth, during the entire year, the rain falls for 135.2 days and collects up to 24.53" (623mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Duluth, in March, snow falls for 13.3 days, with typically accumulated 4.76" (121mm) of snow. In Duluth, during the entire year, snow falls for 90.9 days and aggregates up to 33.27" (845mm) of snow.

Ocean temperature

January through April, with an average ocean temperature of 35.6°F (2°C), are months with the coldest seawater in Duluth, Minnesota.
Note: Within swimming, this is perceived as extraordinarily cold, dangerous, and potentially lethal. If not properly protected by insulated waterproof attire, hypothermia ensues quickly.

Daylight

The average length of the day in March is 11h and 57min.
On the first day of the month, sunrise is at 6:46 am and sunset at 5:54 pm CST. On the last day of March, sunrise is at 6:47 am and sunset at 7:36 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 4.5h.

UV index

The average daily maximum UV index in March is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A typical high UV index of 2 in March suggests the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
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Frequently asked questions

How cold is it in Duluth in March?

In Duluth, in March, the average high-temperature is 34°F (1.1°C), and the average low-temperature is 21.4°F (-5.9°C).

What is the average humidity in March in Duluth?

In Duluth, the average relative humidity in March is 86%.

How much does it rain in Duluth in March?

In March, the rain falls for 10 days. Throughout March, 1.54" (39mm) of precipitation is accumulated.

How many days does it snow in March in Duluth?

In Duluth, Minnesota, in March, during 13.3 snowfall days, 4.76" (121mm) of snow is typically accumulated.

When is the ocean coldest in Duluth?

January through April, with an average ocean temperature of 35.6°F (2°C), are months with the coldest seawater in Duluth, Minnesota.

How cold is the water in March in Duluth?

In Duluth, the average seawater temperature in March is 35.6°F (2°C). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

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

In Duluth, Minnesota, the average day length in March is 11h and 57min.

What time are sunrise and sunset in March in Duluth?

On the first day of March in Duluth, Minnesota, sunrise is at 6:46 am and sunset at 5:54 pm CST. On the last day of the month, sunrise is at 6:47 am and sunset at 7:36 pm CDT.

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

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

How many hours of sunshine does Duluth have in March?

The average sunshine duration in March in Duluth is 4.5h.

What is the UV index reading in March in Duluth?

In Duluth, Minnesota, the average daily maximum UV index in March is 2. A UV Index of 2, and less, symbolizes a minimal 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
Duluth, MN

Average temperature in March - Duluth, MN
  • Average high temperature in March: 34°F

The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (16.3°F).

  • Average low temperature in March: 21.4°F

The month with the highest average low temperature is July (57.6°F).
The coldest month (with the lowest average low temperature) is January (3.9°F).

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Average pressure in March
Duluth, MN

Average pressure in March - Duluth, MN
  • Average pressure in March: 30.09"Hg

The month with the highest atmospheric pressure is February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in March
Duluth, MN

Average wind speed in March - Duluth, MN
  • Average wind speed in March: 7.9mph

The windiest month (with the highest average wind speed) is April (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in March
Duluth, MN

Average humidity in March - Duluth, MN
  • Average humidity in March: 86%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (72%).

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Average rainfall in March
Duluth, MN

Average rainfall in March - Duluth, MN
  • Average rainfall in March: 1.54"

The wettest month (with the highest rainfall) is July (3.03").
The driest month (with the least rainfall) is January (0.87").

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Average rainfall days in March
Duluth, MN

Average rainfall days in March - Duluth, MN
  • Average rainfall days in March: 10 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.3 days).

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Average snowfall in March
Duluth, MN

Average snowfall in March - Duluth, MN
  • Average snowfall in March: 4.76"

The month with the highest snowfall is December (7.72").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in March
Duluth, MN

Average snowfall days in March - Duluth, MN
  • Average snowfall days in March: 13.3 days

The month with the highest number of snowfall days is January (20.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in March
Duluth, MN

Average sea temperature in March - Duluth, MN
  • Average sea temperature in March: 36°F

The best month for swimming (with the highest average sea temperature) is August (61°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (36°F).

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Average daylight in March /
Average sunshine in March
Duluth, MN

Average daylight in March / Average sunshine in March - Duluth, MN
  • Average daylight in March: 11h and 5min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in March: 4h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

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Average sunshine days in March
Duluth, MN

Average sunshine days in March - Duluth, MN
  • Average sunshine days in March: 11.2 days

The month with the most sunshine days is November (13.7 days).
The month with the least sunshine days is June (10.1 days).

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Average UV index in March
Duluth, MN

Average UV index in March - Duluth, MN
  • Average UV index in March: 2

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

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Average cloud cover in March
Duluth, MN

Average cloud cover in March - Duluth, MN
  • Average cloud cover in March: 64

The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 34).

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Average visibility in March
Duluth, MN

Average visibility in March - Duluth, MN
  • Average visibility in March: 5mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).

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Duluth, Minnesota, USA

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