Duluth Water Temperature

Duluth is a city close to Lake Superior. August is the month with the warmest water temperature at 73°F / 22.8°C. The coolest month is January with an avg. water temperature of 32°F / 0°C. April is the sunniest at 0in / 1.1mm and August the wettest month with 2.1in / 53.3mm. The average air temperature is around 69.4°F / 20.8°C, July is the hottest month in a year. January is the coolest with 12.4°F / -10.9°C average air temperature. Warm-summer humid continental climate would be the climate here. June, July, August, September would be the best time to visit.

Duluth Summary

Description Value
Current water temperature 30.2 °F / -1 °C
Warmest Month Water Temperature: August with 73°F / 22.8°C
Coldest Month Water Temperature: January with 32°F / 0°C
Warmest Month Air Temperature: July with 69.4°F / 20.8°C
Coldest Month Air Temperature: January with 12.4°F / -10.9°C
Wettest Month: August with 2.1in / 53.3mm
Driest Month: April with 0in / 1.1mm
Highest Humidity December with 78.1%
Lowest Humidity September with 70.4%
Best Time to Visit: June, July, August, September
Climate Classification Warm-summer humid continental climate

Duluth water temperature by month

°F

Lake Superior water temperature by month

Max. Water

Temperature (°F)

 ø. Water

Temperature (°F)

 Min. Water

Temperature (°F)

January

 32 32 32

February

 32 32 32

March

 32 32 32

April

 32.5 32 32

May

 42.8 36.5 32.5

June

 61.7 51.6 43

July

 74.1 67.5 59.4

August

 74.8 70.5 66.9

September

 71.2 63.7 57

October

 58.3 50.9 46

November

 45.9 42.4 39

December

 38.7 34.3 32

°C

Lake Superior water temperature by month

Max. Water

Temperature (°C)

 ø. Water

Temperature (°C)

 Min. Water

Temperature (°C)

January

 0 0 0

February

 0 0 0

March

 0 0 0

April

 0.3 0 0

May

 6 2.5 0.3

June

 16.5 10.9 6.1

July

 23.4 19.7 15.2

August

 23.8 21.4 19.4

September

 21.8 17.6 13.9

October

 14.6 10.5 7.8

November

 7.7 5.8 3.9

December

 3.7 1.3 0
August is the month with the warmest water temperature at 73°F / 22.8°C. The month with the coldest is January with an average water temperature of 32°F / 0°C.

Duluth Weather Forecast for the next 14 Days

7 Day Weather Forecast

Date Weather High Temp. Low Temp. Rain? Windspeed Precipitation Humidity
Dec 04.
Partly Cloudy
41 °F
5 °C
23 °F
-5 °C
0 %
9.9 mph
16 km/h
0 inch
0 mm
79%
Dec 05.
Overcast
36 °F
2 °C
34 °F
1 °C
0 %
14.9 mph
24 km/h
0 inch
0 mm
84%
Dec 06.
Partly Cloudy
39 °F
4 °C
32 °F
0 °C
0 %
15.5 mph
25 km/h
0 inch
0 mm
59%
Dec 07.
Partly Cloudy
37 °F
3 °C
25 °F
-4 °C
0 %
16.8 mph
27 km/h
0 inch
0 mm
55%
Dec 08.
Partly Cloudy
34 °F
1 °C
27 °F
-3 °C
0 %
6.2 mph
10 km/h
0 inch
0 mm
80%
Dec 09.
Light snow
30 °F
-1 °C
21 °F
-6 °C
0 %
10.6 mph
17 km/h
0 inch
0 mm
77%
Dec 10.
Overcast
34 °F
1 °C
25 °F
-4 °C
0 %
13 mph
21 km/h
0 inch
0.1 mm
76%

+7 Day Forecast

Date Weather High Temp. Low Temp. Rain? Windspeed Precipitation Humidity
Dec 11.
Light freezing rain
16 °F
-9 °C
5 °F
-15 °C
78 %
16.8 mph
27 km/h
0 inch
0.2 mm
65%
Dec 12.
Moderate or heavy snow showers
27 °F
-3 °C
16 °F
-9 °C
79 %
18.6 mph
30 km/h
0.2 inch
3.9 mm
77%
Dec 13.
Moderate or heavy snow showers
37 °F
3 °C
30 °F
-1 °C
88 %
16.8 mph
27 km/h
0.1 inch
2 mm
76%
Dec 14.
Partly Cloudy
28 °F
-2 °C
23 °F
-5 °C
0 %
13 mph
21 km/h
0 inch
0 mm
78%
Dec 15.
Partly Cloudy
23 °F
-5 °C
18 °F
-8 °C
0 %
9.9 mph
16 km/h
0 inch
0 mm
71%
Dec 16.
Partly Cloudy
36 °F
2 °C
30 °F
-1 °C
0 %
13 mph
21 km/h
0 inch
0.1 mm
84%
Dec 17.
Overcast
32 °F
0 °C
19 °F
-7 °C
0 %
16.8 mph
27 km/h
0 inch
0 mm
56%

Duluth weather by month / climate table

°F

Max.

Temperature

°F

ø.

Temperature

°F

Min.

Temperature

(°F)

Precip.

(in)

Rainy Days

(d)

Rel. Humidity

(%)

January

 23.2 12.4 2.1 0.6 0 75.2%

February

 25.7 14.4 4.3 0.5 0 74%

March

 41.4 25.7 9.9 0.3 0 74.2%

April

 50 36.5 25.5 0 0 71.1%

May

 64.6 48.6 37.8 0.9 1 71.1%

June

 72.9 60.1 47.3 1.1 2 76.2%

July

 78.1 69.4 61.2 1.7 1 72.8%

August

 78.1 68.7 61.5 2.1 0 71.9%

September

 75.6 61.7 49.1 1.1 0 70.4%

October

 60.1 47.8 37.6 0.8 0 70.6%

November

 46.2 35.1 23.5 0.8 1 72.5%

December

 30.4 20.8 13.5 1.5 0 78.1%

°C

Max.

Temperature

°C

ø.

Temperature

°C

Min.

Temperature

(°C)

Precip.

(mm)

Rainy Days

(d)

Rel. Humidity

(%)

January

 -4.9 -10.9 -16.6 15.5 0 75.2%

February

 -3.5 -9.8 -15.4 13.8 0 74%

March

 5.2 -3.5 -12.3 6.6 0 74.2%

April

 10 2.5 -3.6 1.1 0 71.1%

May

 18.1 9.2 3.2 23.2 1 71.1%

June

 22.7 15.6 8.5 28 2 76.2%

July

 25.6 20.8 16.2 43.4 1 72.8%

August

 25.6 20.4 16.4 53.3 0 71.9%

September

 24.2 16.5 9.5 28.7 0 70.4%

October

 15.6 8.8 3.1 19.8 0 70.6%

November

 7.9 1.7 -4.7 19.4 1 72.5%

December

 -0.9 -6.2 -10.3 37.5 0 78.1%
April is the most draught at 0in / 1.1mm and August the month with the most rain around 2.1in / 53.3mm. The avg. temperature is around 69.4°F / 20.8°C, July is the hottest month in a year. January is the coolest with 12.4°F / -10.9°C avg. temperature.

Activities & POI in Duluth

Type of Activity List
Marina for Sailing, Boat adventures, fishing Minnesota Slip
Attraction Marshall W Alworth Planetariam, SS William A. Irvin, Enger Tower, Glenshhen Mansion Congdon Estate Grounds
Golf Course Enger Park Golf Course, Ridgeview Country Club

Copyright Flickr CC2.0:Sharon Mollerus