Duluth (MN) monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Duluth

Duluth average temperature chart (Celsius) Duluth average temperature chart (Fahrenheit)
Average monthly temperatures in Duluth (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -7.6 -4.5 1.6 9.8 16.7 21.7 25.3 23.8 18.5 12.3 3 -5
°F 18.3 23.9 34.9 49.7 62.1 71.1 77.6 74.9 65.3 54.1 37.3 23

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Duluth monthly rainfall chart (mm) Duluth monthly rainfall chart (inches)
Average monthly rainfall in Duluth (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 27 18 44 56 80 98 93 100 96 60 44 29
inches 1.1 0.7 1.7 2.2 3.2 3.8 3.7 3.9 3.8 2.4 1.7 1.1
Rainy days 12 9 11 10 12 12 11 11 12 10 10 11

Average annual rainfall in Duluth: 699.867mm (275.5 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Duluth

Duluth average daily sunshine chart
Average daily sunshine Duluth
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 4.9 5.9 6.7 8.3 9.3 10 10.9 9.4 7.1 5.4 3.7 3.8

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Duluth average minimum / maximum temperatures (Celsius) Duluth average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Duluth (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -18.1 -15.4 -8.3 -1.1 4.4 9.2 13 12.3 7.7 2.3 -5 -14
Max °C -7.4 -4.3 1.9 10.1 17 22.1 25.7 24.1 18.8 12.5 3.2 -4.8
Min °F -0.5 4.4 17.2 30 39.9 48.5 55.3 54.1 45.8 36.1 23.1 6.8
Max °F 9.1 14.4 26.2 40.1 51.3 60.1 66.7 64.8 55.8 45.3 30.4 15.1

Sea temperature

The graph below shows the average sea temperature.

Duluth average sea temperature chart (Celsius) Duluth average sea temperature chart (Fahrenheit)
Average sea temperature around Duluth in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 5.2 5 5.2 6 7.3 9.3 12.4 16.4 15.3 11.3 8.1 6.2
°F 41.4 40.9 41.4 42.8 45.1 48.7 54.4 61.5 59.5 52.4 46.7 43.1

Wind speed

The graph below shows the average wind speed.

Duluth average winspeed by month (km/h) Duluth average winspeed by month (mph)
Average wind speed in Duluth (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 18 17 18 19 17 16 14 14 16 17 17 17
mph 11 10 11 12 11 10 9 9 10 10 11 11

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Duluth relative humidity averages
Average relative humidity in Duluth
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
72% 70% 69% 64% 63% 70% 71% 74% 76% 71% 75% 76%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Duluth weather stats

Duluth weather statistics
Hottest month: July 25.3°C 77.5°F
Driest month: February 18mm 0.7ins
Sunniest month: July 10.9hrs
Coldest month: January -7.6°C 18.3°F
Wettest month: August 100mm 3.9ins
Warmest sea: August 16.4°C 61.5°F
Map showing location of Duluth (46.78327, -92.10658) Duluth map pin © Google

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