Duluth
Minnesota, USA
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Duluth, MN

A dusk view of bright neon lights in Duluth, Minnesota, and a clear view of the lit Aerial Lift Bridge, and two long piers with lighthouses at the ends
A dusk view of bright neon lights in Duluth, Minnesota, and a clear view of the lit Aerial Lift Bridge, and two long piers with lighthouses at the ends
March, the first month of the spring, in Duluth, is a wintry month, with temperature in the range of an average high of 34.3°F (1.3°C) and an average low of 17.4°F (-8.1°C).

Temperature

In March, the average high-temperature rises, from a subzero cold 24.1°F (-4.4°C) in February, to a cold 34.3°F (1.3°C). In March, the average low-temperature is 17.4°F (-8.1°C).

Humidity

In Duluth, the average relative humidity in March is 69.3%.

Rainfall

In Duluth, in March, during 9.7 rainfall days, 1.5" (37.8mm) of precipitation is typically accumulated. Throughout the year, in Duluth, there are 131.4 rainfall days, and 31" (786.3mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall in Duluth.

Ocean temperature

January through April, with an average ocean temperature of 35.6°F (2°C), are months with the coldest seawater. 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 Duluth is 12h.

Sunshine

The average sunshine in Duluth is 6.2h.

UV index

In March, the average daily maximum UV index in Duluth, Minnesota, is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for the ordinary person.
In March, the average maximum UV index of 3 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in March in Duluth?

The average high-temperature, in March, is 34.3°F (1.3°C), while the average low-temperature is 17.4°F (-8.1°C).

What is the average humidity in March in Duluth?

In March, the average relative humidity in Duluth, Minnesota, is 69.3%.

How much does it rain in Duluth in March?

In Duluth, during March, the rain falls for 9.7 days and regularly aggregates up to 1.5" (37.8mm) of precipitation.

How much does it snow in Duluth in March?

In March, in Duluth, Minnesota, it is snowing for 8.7 days. Throughout March, 13.2" (335.3mm) of snow is accumulated.

What months are 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. 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.

How cold is the water in March in Duluth?

In March, the average ocean temperature 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.

How many hours of daylight does Duluth have in March?

In March, the average length of the day is 12h.

How many hours of sunshine does Duluth have in March?

The average sunshine in March in Duluth is 6.2h.

How high is the UV index in March in Duluth?

In March, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in March - Duluth, MN
  • Average high temperature in March: 34.4°F

The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (18.9°F).

  • Average low temperature in March: 17.5°F

The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (1.5°F).

Average humidity in March - Duluth, MN
  • Average humidity in March: 69.3%

The month with the highest relative humidity is December (76.3%).
The month with the lowest relative humidity is May (62.7%).

Average rainfall in March - Duluth, MN
  • Average rainfall in March: 1.5"

The wettest month (with the highest rainfall) is June (4.2").
The driest month (with the lowest rainfall) is February (0.8").

Average rainfall days in March - Duluth, MN
  • Average rainfall days in March: 9.7 days

The month with the highest number of rainy days is June (12.6 days).
The month with the lowest number of rainy days is February (8.5 days).

Average snowfall in March - Duluth, MN
  • Average snowfall in March: 13.2"

The month with the highest snowfall is January (19.4").
Months with the lowest snowfall are June, July and August (0").

Average snowfall days in March - Duluth, MN
  • Average snowfall days in March: 8.7 days

The month with the highest number of snowfall days is January (12.9 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

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).
Coldest months (with the lowest average sea temperature) are January, February, March and April (36°F).

Average daylight in March / Average sunshine in March - Duluth, MN
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 15.8h).
The month with shortest days is December (Average daylight: 8.6h).

  • Average sunshine in March: 6.2h

The month with most sunshine is July (Average sunshine: 9.9h).
Months with least sunshine are November and December (Average sunshine: 3.3).

Average UV index in March - Duluth, MN
  • Average UV index in March: 3

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).