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, the same as September, is another fresh autumn month in Duluth, Minnesota, with average temperature fluctuating between 51.3°F (10.7°C) and 38.3°F (3.5°C).

Temperature

In Duluth, the average high-temperature in October plummets, from a comfortable 67.1°F (19.5°C) in September, to a cool 51.3°F (10.7°C). In Duluth, the average low-temperature is 38.3°F (3.5°C).

Humidity

In October, the average relative humidity is 78%.

Rainfall

In Duluth, during October, the rain falls for 14.4 days and regularly aggregates up to 2.36" (60mm) of precipitation. In Duluth, Minnesota, during the entire year, the rain falls for 135.2 days and collects up to 24.53" (623mm) of precipitation.

Snowfall

Months with snowfall in Duluth, Minnesota, are January through May, October through December. October is the first month it typically snows. Throughout October, in the average 2.5 snowfall days, it receives 0.55" (14mm) of snow. Throughout the year, there are 90.9 snowfall days, and 33.27" (845mm) of snow is accumulated.

Ocean temperature

In October, the average ocean temperature in Duluth is 46.4°F (8°C).
Note: Swimming in 46.4°F (8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

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

Sunshine

The average sunshine in October is 4.9h.

UV index

The average daily maximum UV index in Duluth is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 2 in October transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in October in Duluth?

In Duluth, Minnesota, in October, the average high-temperature is 51.3°F (10.7°C), and the average low-temperature is 38.3°F (3.5°C).

What is the average humidity in October in Duluth?

In Duluth, the average relative humidity in October is 78%.

How much does it rain in Duluth in October?

In October, in Duluth, the rain falls for 14.4 days. Throughout October, 2.36" (60mm) of precipitation is accumulated.

When does it start to snow in Duluth?

October is the first month it typically snows. Throughout October, in the average 2.5 snowfall days, it receives 0.55" (14mm) of snow.

How cold is the water in October in Duluth?

In Duluth, Minnesota, in October, the average water temperature is 46.4°F (8°C). Swimming in 46.4°F (8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Duluth have in October?

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

How long on average sun shines in October in Duluth?

The average sunshine in October is 4.9h.

What is the UV index intensity in October in Duluth?

The average daily maximum UV index in October in Duluth, Minnesota, is 2. A UV Index reading of 2, and below, represents a low health threat from the exposure to the Sun's UV rays.
Average temperature in October - Duluth, MN
  • Average high temperature in October: 51.3°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 October: 38.3°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).

Average humidity in October - Duluth, MN
  • Average humidity in October: 78%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (72%).

Average rainfall in October - Duluth, MN
  • Average rainfall in October: 2.36"

The wettest month (with the highest rainfall) is July (3.03").
The driest month (with the lowest rainfall) is January (0.87").

Average rainfall days in October - Duluth, MN
  • Average rainfall days in October: 14.4 days

The month with the highest number of rainy days is June (17.3 days).
The month with the lowest number of rainy days is February (3.3 days).

Average snowfall in October - Duluth, MN
  • Average snowfall in October: 0.55"

The month with the highest snowfall is December (7.72").
Months with the lowest snowfall are June, July, August and September (0").

Average snowfall days in October - Duluth, MN
  • Average snowfall days in October: 2.5 days

The month with the highest number of snowfall days is January (20.1 days).
Months with the lowest number of snowfall days are June, July, August and September (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: 10h).
The month with least sunshine is January (Average sunshine: 2.8h).

Average UV index in October - Duluth, MN
  • Average UV index in October: 2

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 1).