May weather forecast and climate
Duluth, MN

What is the temperature in May in Duluth?

In Duluth, in May, the average high-temperature is 62.2°F (16.8°C), and the average low-temperature is 40.6°F (4.8°C).

How much does it rain in Duluth in May?

In Duluth, during May, the rain falls for 12.3 days and regularly aggregates up to 3.2" (82mm) of precipitation.

What is the last month it snows in Duluth?

May is the last month it regularly snows in Duluth. During 0.5 snowfall days, in May, Duluth aggregates 0.4" (10.2mm) 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.
Average temperature in May - Duluth, MN
  • Average high temperature in May: 62.2°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 May: 40.6°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 May - Duluth, MN
  • Average humidity in May: 62.7%

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 May - Duluth, MN
  • Average rainfall in May: 3.2"

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 May - Duluth, MN
  • Average rainfall days in May: 12.3 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 May - Duluth, MN
  • Average snowfall in May: 0.4"

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 May - Duluth, MN
  • Average snowfall days in May: 0.5 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 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).
Coldest months (with the lowest average sea temperature) are January, February, March and April (36°F).

Average daylight in May / Average sunshine in May - Duluth, MN
  • Average daylight in May: 15.1h

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 May: 8.5h

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 May - Duluth, MN
  • Average UV index in May: 6

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).

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