April 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 April

April is a chilly spring month in Duluth, Minnesota, with an average temperature fluctuating between 31.3°F (-0.4°C) and 46°F (7.8°C).

Temperature

In Duluth, Minnesota, the average high-temperature in April increases from a cold 34°F (1.1°C) in March to a frosty 46°F (7.8°C). In Duluth, in April, the average low-temperature is 31.3°F (-0.4°C).

Humidity

In April, the average relative humidity is 77%.

Rainfall

In Duluth, it is raining for 13.5 days, with typically 2.52" (64mm) of accumulated precipitation. 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, Minnesota, snow falls for 7.3 days, with typically accumulated 3.94" (100mm) of snow. Throughout the year, there are 90.9 snowfall days, and 33.27" (845mm) of snow is accumulated.

Ocean temperature

The months with the coldest seawater 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 April in Duluth is 13h and 38min.
On the first day of April in Duluth, sunrise is at 6:46 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 8:16 pm CDT.

Sunshine

In April, the average sunshine in Duluth is 6.8h.

UV index

In April, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In April, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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 April in Duluth?

In April, in Duluth, the average high-temperature is 46°F (7.8°C), and the average low-temperature is 31.3°F (-0.4°C).

What is the average humidity in April in Duluth?

The average relative humidity in April in Duluth is 77%.

How much does it rain in Duluth in April?

In Duluth, in April, it is raining for 13.5 days, with typically 2.52" (64mm) of accumulated precipitation.

How many days does it snow in April in Duluth?

In Duluth, Minnesota, in April, snow falls for 7.3 days, with typically accumulated 3.94" (100mm) 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 April in Duluth?

In Duluth, Minnesota, in April, the average water temperature is 35.6°F (2°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 April?

The average day length in April in Duluth is 13h and 38min.

When are sunrise and sunset in April in Duluth?

On the first day of April in Duluth, Minnesota, sunrise is at 6:46 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 8:16 pm CDT.

How many hours of sunshine does Duluth have in April?

In April, the average sunshine duration is 6.8h.

What is the UV index reading in April in Duluth?

In April, the average daily maximum UV index in Duluth, Minnesota, is 3. A UV Index estimate of 3 to 5 represents a medium health risk 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 April
Duluth, MN

Average temperature in April - Duluth, MN
  • Average high temperature in April: 46°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 April: 31.3°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 April
Duluth, MN

Average pressure in April - Duluth, MN
  • Average pressure in April: 29.98"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 April
Duluth, MN

Average wind speed in April - Duluth, MN
  • Average wind speed in April: 8.8mph

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 April
Duluth, MN

Average humidity in April - Duluth, MN
  • Average humidity in April: 77%

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 April
Duluth, MN

Average rainfall in April - Duluth, MN
  • Average rainfall in April: 2.52"

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 April
Duluth, MN

Average rainfall days in April - Duluth, MN
  • Average rainfall days in April: 13.5 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 April
Duluth, MN

Average snowfall in April - Duluth, MN
  • Average snowfall in April: 3.94"

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 April
Duluth, MN

Average snowfall days in April - Duluth, MN
  • Average snowfall days in April: 7.3 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 April
Duluth, MN

Average sea temperature in April - Duluth, MN
  • Average sea temperature in April: 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 April /
Average sunshine in April
Duluth, MN

Average daylight in April / Average sunshine in April - Duluth, MN
  • Average daylight in April: 13h and 38min

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 April: 6h and 48min

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 April
Duluth, MN

Average sunshine days in April - Duluth, MN
  • Average sunshine days in April: 10.8 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 April
Duluth, MN

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

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 April
Duluth, MN

Average cloud cover in April - Duluth, MN
  • Average cloud cover in April: 55

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 April
Duluth, MN

Average visibility in April - Duluth, MN
  • Average visibility in April: 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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