Duluth Water Temperature

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

Duluth Summary

Description	Value
Current water temperature	/
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

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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

The hottest water temperature typically reached in August with around 73°F / 22.8°C. The coldest in January with an average water temperature of 32°F / -0°C.

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Duluth weather today & 14-day weather forecast

7-day weather forecast
+9-day forecast

7-day weather forecast

Date	Weather	Max. F Min. F	Max. C Min. C	Windspeed Windir.	Precip. Rainrisk	Rel. Humidity
Nov. 21	Broken clouds	45 °F 34°F	7 °C 1°C	5mph (8km/h) north-northwest	0in (0mm) 0 %	75%
Nov. 22	Broken clouds	41 °F 31°F	5 °C -0°C	2mph (4km/h) northwest	0in (0mm) 0 %	76%
Nov. 23	Broken clouds	37 °F 30°F	3 °C -1°C	1mph (2km/h) west	0in (0mm) 0 %	70%
Nov. 24	Overcast clouds	38 °F 32°F	3 °C -0°C	2mph (3km/h) east-southeast	0in (0mm) 0 %	75%
Nov. 25	Light snow	35 °F 24°F	2 °C -5°C	3mph (5km/h) northwest	0in (1mm) 75 %	74%
Nov. 26	Broken clouds	29 °F 22°F	-2 °C -6°C	3mph (4km/h) west-northwest	0in (0mm) 0 %	72%
Nov. 27	Overcast clouds	26 °F 22°F	-3 °C -5°C	2mph (3km/h) west	0in (0mm) 0 %	81%

+9-day forecast

Date	Weather	Max. F Min. F	Max. C Min. C	Windspeed Windir.	Precip. Rainrisk	Rel. Humidity
Nov. 28	Flurries	27 °F 23°F	-3 °C -5°C	2mph (4km/h) west	0in (0mm) 10 %	84%
Nov. 29	Broken clouds	26 °F 23°F	-3 °C -5°C	3mph (5km/h) west-northwest	0in (0mm) 0 %	79%
Nov. 30	Broken clouds	25 °F 22°F	-4 °C -6°C	3mph (5km/h) west-southwest	0in (0mm) 0 %	82%
Dec. 01	Scattered clouds	22 °F 11°F	-6 °C -12°C	3mph (4km/h) west-northwest	0in (0mm) 0 %	84%
Dec. 02	Few clouds	13 °F 5°F	-11 °C -15°C	1mph (2km/h) northwest	0in (0mm) 0 %	60%
Dec. 03	Snow	21 °F 10°F	-6 °C -12°C	2mph (3km/h) south-southwest	0in (3mm) 95 %	83%
Dec. 04	Light snow	24 °F 21°F	-5 °C -6°C	3mph (4km/h) west-northwest	0in (4mm) 85 %	90%
Dec. 05	Flurries	6 °F 2°F	-15 °C -17°C	3mph (5km/h) west-northwest	0in (0mm) 20 %	70%
Dec. 06	Flurries	9 °F 1°F	-13 °C -17°C	2mph (4km/h) west	0in (0mm) 20 %	81%

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%

The hottest avg. temperature is around 69.4°F / 20.8°C, July is the month with the highest temperature. January is the coolest with 12.4°F / -10.9°C average temperature. April is the month with the lowest precipitation of 0in / 1.1mm and August with the maximum precipitation in a year with 2.1in / 53.3mm.

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

Lake Superior