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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Grand Portage, MN
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August
Average Temperature
High
21°
Feels 21
Low
13°
Feels 12
Average Precipitation
9 Days
Rain amount
36.8mm
Snow amount
0cm
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Daily Historical Averages
August 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
19°
25
18°
26
23°
27
19°
28
18°
29
19°
30
20°
31
19°
Forecast
Monday, August 24, 2026
Day
19°
Feels 19
Wind
13 km/h S
Gust
23 km/h
Humidity
56%
P.O.P
20%
Night
12°
Feels 11
Wind
12 km/h SW
Gust
18 km/h
Humidity
82%
P.O.P
30%
Historical Averages
Aug 24
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.