Duluth weather by month

Check out Duluth weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature
Rainfall
Sunshine & daylight
UV levels & humidity

Temperature in Duluth (°F)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max temperature (daytime)	19	25	36	50	63	72	79	75	66	55	37	23
Min temperature (night-time)	-0	5	18	30	39	48	55	54	46	36	23	7
Heat & Humidity	0	0	0	0	0	0	0	0	0	0	0	0
Sea temperature	36	36	36	36	37	39	48	61	57	46	41	37

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Duluth

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daily hours of sunshine	4	5	6	8	9	9	10	9	7	5	3	3
Daily hours of daylight	9	10	12	14	15	16	15	14	13	11	9	9
UV Index (Maximum)	1	2	3	5	6	8	8	7	5	3	1	1

Rainfall in Duluth

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Number of days with some rain	12	9	11	10	12	12	11	11	12	10	10	11
Average monthly rainfall (inches)	1.1	0.7	1.7	2.2	3.1	3.9	3.7	3.9	3.8	2.4	1.7	1.1

More about Duluth

Duluth by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Minnesota

Marriott discount code: up to 20% off hotel stays

Discount Code

Save up to 20% when you book long stays with Marriott
20% off - 4-6 nights, 15% off 3 nights
Book hotels in Europe, the Middle East & Africa

Show discount code

******UK8

Redeem Marriott discount code >>

View all Marriott offers

The climate guide for Minnesota (Duluth) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Duluth?

Duluth has a cold climate with warm summers and some rainfall in all months.

Duluth weather in January

Expect daytime maximum temperatures of 19°F in Duluth, Minnesota in January based on long-term weather averages. There are 4 hours of sunshine per day on average with 12 days with some rainfall, which might fall as snow.

19
19°F max day temperature
4
4 hours of sunshine per day
12
12 days with some rainfall
-0
-0°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
1.1
1.1 inches of monthly rainfall
1
1 (Low) UV index
36
36°F sea temperature

Back to months

Duluth weather in February

Expect daytime maximum temperatures of 25°F in Duluth, Minnesota in February based on long-term weather averages. There are 5 hours of sunshine per day on average, which might fall as snow.

25
25°F max day temperature
5
5 hours of sunshine per day
9
9 days with some rainfall
5
5°F min night temperature
10
10 hours of daylight per day
0
No heat & humidity
0.7
0.7 inches of monthly rainfall
2
2 (Low) UV index
36
36°F sea temperature

Back to months

Duluth weather in March

Expect daytime maximum temperatures of 36°F in Duluth, Minnesota in March based on long-term weather averages. There are 6 hours of sunshine per day on average with 11 days with some rainfall and typically 1.7 inches of rainfall in the month, which might fall as snow.

36
36°F max day temperature
6
6 hours of sunshine per day
11
11 days with some rainfall
18
18°F min night temperature
12
12 hours of daylight per day
0
No heat & humidity
1.7
1.7 inches of monthly rainfall
3
3 (Moderate) UV index
36
36°F sea temperature

Back to months

Duluth weather in April

Expect daytime maximum temperatures of 50°F in Duluth, Minnesota in April based on long-term weather averages. There are 8 hours of sunshine per day on average with 10 days with some rainfall and typically 2.2 inches of rainfall in the month.

50
50°F max day temperature
8
8 hours of sunshine per day
10
10 days with some rainfall
30
30°F min night temperature
14
14 hours of daylight per day
0
No heat & humidity
2.2
2.2 inches of monthly rainfall
5
5 (Moderate) UV index
36
36°F sea temperature

Back to months

Duluth weather in May

Expect daytime maximum temperatures of 63°F in Duluth, Minnesota in May based on long-term weather averages. There are 9 hours of sunshine per day on average with 12 days with some rainfall and typically 3.1 inches of rainfall in the month.

63
63°F max day temperature
9
9 hours of sunshine per day
12
12 days with some rainfall
39
39°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
3.1
3.1 inches of monthly rainfall
6
6 (High) UV index
37
37°F sea temperature

Back to months

Duluth weather in June

Expect daytime maximum temperatures of 72°F in Duluth, Minnesota in June based on long-term weather averages. There are 9 hours of sunshine per day on average with 12 days with some rainfall and typically 3.9 inches of rainfall in the month.

72
72°F max day temperature
9
9 hours of sunshine per day
12
12 days with some rainfall
48
48°F min night temperature
16
16 hours of daylight per day
0
No heat & humidity
3.9
3.9 inches of monthly rainfall
8
8 (Very High) UV index
39
39°F sea temperature

Back to months

Duluth weather in July

Expect daytime maximum temperatures of 79°F in Duluth, Minnesota in July based on long-term weather averages. There are 10 hours of sunshine per day on average with 11 days with some rainfall and typically 3.7 inches of rainfall in the month.

79
79°F max day temperature
10
10 hours of sunshine per day
11
11 days with some rainfall
55
55°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
3.7
3.7 inches of monthly rainfall
8
8 (Very High) UV index
48
48°F sea temperature

Back to months

Duluth weather in August

Expect daytime maximum temperatures of 75°F in Duluth, Minnesota in August based on long-term weather averages. There are 9 hours of sunshine per day on average with 11 days with some rainfall and typically 3.9 inches of rainfall in the month.

75
75°F max day temperature
9
9 hours of sunshine per day
11
11 days with some rainfall
54
54°F min night temperature
14
14 hours of daylight per day
0
No heat & humidity
3.9
3.9 inches of monthly rainfall
7
7 (High) UV index
61
61°F sea temperature

Back to months

Duluth weather in September

Expect daytime maximum temperatures of 66°F in Duluth, Minnesota in September based on long-term weather averages. There are 7 hours of sunshine per day on average with 12 days with some rainfall and typically 3.8 inches of rainfall in the month.

66
66°F max day temperature
7
7 hours of sunshine per day
12
12 days with some rainfall
46
46°F min night temperature
13
13 hours of daylight per day
0
No heat & humidity
3.8
3.8 inches of monthly rainfall
5
5 (Moderate) UV index
57
57°F sea temperature

Back to months

Duluth weather in October

Expect daytime maximum temperatures of 55°F in Duluth, Minnesota in October based on long-term weather averages. There are 5 hours of sunshine per day on average with 10 days with some rainfall and typically 2.4 inches of rainfall in the month.

55
55°F max day temperature
5
5 hours of sunshine per day
10
10 days with some rainfall
36
36°F min night temperature
11
11 hours of daylight per day
0
No heat & humidity
2.4
2.4 inches of monthly rainfall
3
3 (Moderate) UV index
46
46°F sea temperature

Back to months

Duluth weather in November

Expect daytime maximum temperatures of 37°F in Duluth, Minnesota in November based on long-term weather averages. There are 3 hours of sunshine per day on average with 10 days with some rainfall and typically 1.7 inches of rainfall in the month, which might fall as snow.

37
37°F max day temperature
3
3 hours of sunshine per day
10
10 days with some rainfall
23
23°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
1.7
1.7 inches of monthly rainfall
1
1 (Low) UV index
41
41°F sea temperature

Back to months

Duluth weather in December

Expect daytime maximum temperatures of 23°F in Duluth, Minnesota in December based on long-term weather averages. There are 3 hours of sunshine per day on average with 11 days with some rainfall, which might fall as snow.

23
23°F max day temperature
3
3 hours of sunshine per day
11
11 days with some rainfall
7
7°F min night temperature
9
9 hours of daylight per day
0
No heat & humidity
1.1
1.1 inches of monthly rainfall
1
1 (Low) UV index
37
37°F sea temperature

Back to months