May 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 May

May, the last month of the spring in Duluth, is a comfortable month, with an average temperature fluctuating between 61°F (16.1°C) and 41.9°F (5.5°C).

Temperature

In Duluth, Minnesota, the average high-temperature in May soars, from a frosty 46°F (7.8°C) in April, to an enjoyable 61°F (16.1°C). In May, the average low-temperature is 41.9°F (5.5°C).

Humidity

May is the least humid month, with an average relative humidity of 72%.

Rainfall

In Duluth, Minnesota, in May, during 16.3 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. Throughout the year, there are 135.2 rainfall days, and 24.53" (623mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Duluth. May is the last month it regularly snows in Duluth. During 0.8 snowfall days, Duluth aggregates 0.2" (5mm) 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

In Duluth, the average seawater temperature in May is 37.4°F (3°C).
Note: 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.

Daylight

In Duluth, the average length of the day in May is 15h and 4min.
On the first day of the month, sunrise is at 5:53 am and sunset at 8:17 pm. On the last day of May, in Duluth, sunrise is at 5:18 am and sunset at 8:53 pm CDT.

Sunshine

The average sunshine in May in Duluth is 8.5h.

UV index

The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 4 in May transform into the following instructions:
Take precautions - Protection against sunburn is recommended. 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.
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FAQ

What is the temperature in May in Duluth?

In Duluth, Minnesota, in May, the average high-temperature is 61°F (16.1°C), and the average low-temperature is 41.9°F (5.5°C).

What is the least humid month in Duluth?

May is the least humid month in Duluth, with an average relative humidity of 72%.

What is the average humidity in May in Duluth?

The average relative humidity in May in Duluth is 72%.

How much does it rain in Duluth in May?

In Duluth, Minnesota, in May, it is raining for 16.3 days, with typically 2.83" (72mm) of accumulated precipitation.

What is the last month it snows in Duluth?

May is the last month it regularly snows. During 0.8 snowfall days, in May, Duluth aggregates 0.2" (5mm) of snow.

How cold is the water in May in Duluth?

In Duluth, Minnesota, in May, the average water temperature is 37.4°F (3°C). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

How many hours of daylight does Duluth have in May?

In May, the average day length in Duluth is 15h and 4min.

When are sunrise and sunset in May in Duluth?

In May, on the first day of the month, sunrise is at 5:53 am and sunset at 8:17 pm. On the last day of the month, in Duluth, Minnesota, sunrise is at 5:18 am and sunset at 8:53 pm CDT.

How long on average sun shines in May in Duluth?

In May, the average sunshine duration in Duluth is 8.5h.

What is the UV index reading in May in Duluth?

The average daily maximum UV index in May in Duluth is 4. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Duluth, MN

Average temperature in May - Duluth, MN
  • Average high temperature in May: 61°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 May: 41.9°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 May
Duluth, MN

Average pressure in May - Duluth, MN
  • Average pressure in May: 29.95"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 May
Duluth, MN

Average wind speed in May - Duluth, MN
  • Average wind speed in May: 7.8mph

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 May
Duluth, MN

Average humidity in May - Duluth, MN
  • Average humidity in May: 72%

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 May
Duluth, MN

Average rainfall in May - Duluth, MN
  • Average rainfall in May: 2.83"

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 May
Duluth, MN

Average rainfall days in May - Duluth, MN
  • Average rainfall days in May: 16.3 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 May
Duluth, MN

Average snowfall in May - Duluth, MN
  • Average snowfall in May: 0.2"

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 May
Duluth, MN

Average snowfall days in May - Duluth, MN
  • Average snowfall days in May: 0.8 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 May
Duluth, MN

Average sea temperature in May - Duluth, MN
  • Average sea temperature in May: 37°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 May /
Average sunshine in May
Duluth, MN

Average daylight in May / Average sunshine in May - Duluth, MN
  • Average daylight in May: 15h and 4min

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 May: 8h 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 May
Duluth, MN

Average sunshine days in May - Duluth, MN
  • Average sunshine days in May: 11.3 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 May
Duluth, MN

Average UV index in May - Duluth, MN
  • Average UV index in May: 4

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 May
Duluth, MN

Average cloud cover in May - Duluth, MN
  • Average cloud cover in May: 44

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 May
Duluth, MN

Average visibility in May - Duluth, MN
  • Average visibility in May: 6mi

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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