March weather forecast
Duluth, MN

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

The first month of the spring, March, is a wintry month in Duluth, Minnesota, with an average temperature fluctuating between 21.4°F (-5.9°C) and 34°F (1.1°C).

Temperature

In March, the average high-temperature increases from a freezing cold 21°F (-6.1°C) in February to a cold 34°F (1.1°C). The average low-temperature, in Duluth, is 21.4°F (-5.9°C).

Humidity

The average relative humidity in March is 86%.

Rainfall

In Duluth, Minnesota, during 10 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. In Duluth, during the entire year, the rain falls for 135.2 days and collects up to 24.53" (623mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. 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

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

Daylight

The average length of the day in March is 11h and 57min.
On the first day of the month, sunrise is at 6:47 am and sunset at 5:53 pm CST. On the last day of March, in Duluth, sunrise is at 6:49 am and sunset at 7:35 pm CDT.
Note: On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time lasts until Sunday, November 5. 2023, 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 of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 2 in March interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in March in Duluth?

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?

The average relative humidity in March in Duluth is 86%.

How many days does it rain in March in Duluth?

In Duluth, in March, during 10 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

How much does it snow in Duluth in March?

In Duluth, during March, snow falls for 13.3 days and regularly aggregates up to 4.76" (121mm) of snow.

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.

What is the ocean temperature in March in Duluth?

In March, the average ocean temperature in Duluth, Minnesota, is 35.6°F (2°C). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

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

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

When is the sunrise / sunset in March in Duluth?

On the first day of March in Duluth, Minnesota, sunrise is at 6:47 am and sunset at 5:53 pm CST. On the last day of the month, sunrise is at 6:49 am and sunset at 7:35 pm CDT.

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

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Duluth, and the time zone changes from CST to CDT. DST ends Sunday, November 5. 2023, at 2:00 am.

How long on average sun shines in March in Duluth?

In March, the average sunshine duration is 4.5h.

What is the UV index intensity in March in Duluth?

In March, the average daily maximum UV index in Duluth 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 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 57min

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 37min).

  • Average sunshine in March: 4h and 30min

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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