Annual mean 5°C · wettest around April · prevailing wind W
Warmest
24.0 °C
Coldest
-9.0 °C
Wettest
78%
Windiest
5.2 m/s
Prevailing
W
4.2 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Duluth over the whole year is 5°C. July is the hottest month, with highs of about 24°C; February is the coldest, with lows of about -12°C. Duluth has no sharply defined rainy season: the chance of rain on a given day runs from 67% in January, the driest month, to 75% in April, the wettest. Winds in Duluth are highest in April, averaging 3.9 m/s (14 km/h), and lightest in July, at 2.5 m/s (9 km/h). The prevailing wind is from the W. The clearest skies in Duluth come in July, when the sky is typically 33% covered; December is the cloudiest month, at 65%.
Month by month Duluth climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-8°C
-12°C
-14°C
67%
61%
3.3 m/s
0
0
0
February
-6°C
-12°C
-12°C
71%
49%
3.5 m/s
0
0
1
March
1°C
-5°C
-5°C
74%
47%
3.6 m/s
0
0
4
April
6°C
0°C
1°C
75%
54%
3.9 m/s
2
0
19
May
14°C
7°C
10°C
75%
43%
3.5 m/s
26
4
54
June
20°C
13°C
17°C
75%
40%
3.0 m/s
59
13
64
July
24°C
16°C
23°C
73%
33%
2.5 m/s
70
36
45
August
22°C
15°C
21°C
74%
43%
2.7 m/s
74
25
55
September
19°C
11°C
16°C
75%
47%
2.9 m/s
54
9
70
October
11°C
5°C
6°C
74%
58%
3.3 m/s
14
0
43
November
2°C
-2°C
-3°C
73%
58%
3.4 m/s
2
0
11
December
-5°C
-8°C
-11°C
73%
65%
3.4 m/s
0
0
0
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Duluth weather by season
Year round, Duluth has days of about -8°C at their warmest in January, its coolest month, and 24°C in July, its warmest; the coolest hours of the day run from -12°C to 16°C through the year, and the average temperature over the year is 5°C around the clock. Rain is most likely around April and least likely around January. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Duluth weather in winterDecember to February
High -6°CLow -10°CRain 70%
Winter in Duluth has typical daily highs of about -6°C and lows of about -10°C, with a 70% chance of rain on a given day.
Duluth weather in springMarch to May
High 7°CLow 1°CRain 75%
Spring in Duluth has typical daily highs of about 7°C and lows of about 1°C, with a 75% chance of rain on a given day.
Duluth weather in summerJune to August
High 22°CLow 15°CRain 74%
Summer in Duluth has typical daily highs of about 22°C and lows of about 15°C, with a 74% chance of rain on a given day.
Duluth weather in autumnSeptember to November
High 11°CLow 5°CRain 74%
Autumn in Duluth has typical daily highs of about 11°C and lows of about 5°C, with a 74% chance of rain on a given day.
When is the rainy season in Duluth?
Duluth has no sharply defined rainy season: the chance of rain on a given day runs from 67% in January, the driest month, to 75% in April, the wettest.
What time of year is Duluth windiest?
Winds in Duluth are highest in April, averaging 3.9 m/s (14 km/h), and lightest in July, at 2.5 m/s (9 km/h). The prevailing wind is from the W.
What is the average temperature in Duluth year round?
The average temperature in Duluth over the whole year is 5°C. July is the hottest month, with highs of about 24°C; February is the coldest, with lows of about -12°C.