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

October 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
October, like September, in Duluth, Minnesota, is another fresh autumn month, with average temperature fluctuating between 51.4°F (10.8°C) and 34.9°F (1.6°C).

Temperature

In Duluth, the average high-temperature decreases, from an enjoyable 64.9°F (18.3°C) in September, to a fresh 51.4°F (10.8°C). The average low-temperature, is 34.9°F (1.6°C).

Humidity

The average relative humidity in October is 71.4%.

Rainfall

In Duluth, in October, during 11.3 rainfall days, 2.9" (72.4mm) 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

Months with snowfall are January through May, September through December.

Ocean temperature

In Duluth, the average seawater temperature is 46.4°F (8°C). Swimming in 46.4°F (8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The average length of the day in October is 10.9h.

Sunshine

In October, the average sunshine in Duluth is 4.9h.

UV index

In October, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for the ordinary person.
The average daily UV index of 3 in October transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in October in Duluth?

In Duluth, in October, the average high-temperature is 51.4°F (10.8°C), and the average low-temperature is 34.9°F (1.6°C).

What is the average humidity in October in Duluth?

The average relative humidity in October in Duluth, Minnesota, is 71.4%.

How many days does it rain in October in Duluth?

In Duluth, during October, the rain falls for 11.3 days and regularly aggregates up to 2.9" (72.4mm) of precipitation.

How much does it snow in Duluth in October?

In October, in Duluth, Minnesota, it is snowing for 2 days. Throughout October, 2.3" (58.4mm) of snow is accumulated.

What is the ocean temperature in October in Duluth?

In Duluth, the average seawater temperature in October is 46.4°F (8°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

How many hours of daylight does Duluth have in October?

In Duluth, the average length of the day in October is 10.9h.

How long on average sun shines in October in Duluth?

In Duluth, Minnesota, the average sunshine in October is 4.9h.

What is the UV index reading in October in Duluth?

The average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in October - Duluth, MN
  • Average high temperature in October: 51.5°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 October: 34.8°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 October - Duluth, MN
  • Average humidity in October: 71.4%

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 October - Duluth, MN
  • Average rainfall in October: 2.9"

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 October - Duluth, MN
  • Average rainfall days in October: 11.3 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 October - Duluth, MN
  • Average snowfall in October: 2.3"

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 October - Duluth, MN
  • Average snowfall days in October: 2 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 October - Duluth, MN
  • Average sea temperature in October: 46°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 October / Average sunshine in October - Duluth, MN
  • Average daylight in October: 10.9h

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 October: 4.9h

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 October - Duluth, MN
  • Average UV index in October: 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).