28.04
tue
tue
Day
43°F
SE 17 mph
Precip.
0%
0%
Night
34°F
SE 6 mph
Precip.
0%
0%
29.04
wed
wed
Day
41°F
E 6 mph
Precip.
100%
100%
Night
32°F
S 7 mph
Precip.
0%
0%
30.04
thu
thu
Day
39°F
SE 5 mph
Precip.
74%
74%
Night
30°F
S 7 mph
Precip.
0%
0%
01.05
fri
fri
Day
39°F
NW 7 mph
Precip.
0%
0%
Night
28°F
SE 4 mph
Precip.
0%
0%
02.05
sat
sat
Day
45°F
N 6 mph
Precip.
0%
0%
Night
32°F
S 6 mph
Precip.
0%
0%
03.05
sun
sun
Day
50°F
S 9 mph
Precip.
0%
0%
Night
37°F
S 6 mph
Precip.
0%
0%
04.05
mon
mon
Day
48°F
NE 6 mph
Precip.
0%
0%
Night
45°F
SE 17 mph
Precip.
0%
0%
sea water
temperature
temperature
| Grand Marais |
monthly
weather
weather
| Grand Marais |
current
weather
weather
| Grand Marais |
14 days
forecast
forecast
| Grand Marais |
Sea water temperature in April, °F
Show year:
2026
2025
2024
The average sea water temperature in April of 2026 was 33.0°F. The highest and lowest sea temperatures during the month were 34.3°F and 32.2°F.
Sea water temperature in May, °F
Show year:
2025
2024
2023
The average sea water temperature in May of 2025 was 36.5°F. The highest and lowest sea temperatures during the month were 40.1°F and 33.8°F.
Air temperature in Grand Marais, °F
Precipitation total in Grand Marais, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Grand Marais
Grand Marais on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Grand Marais
Local time: 16:04
April 28, tuesday
1800
45°F
SE
12 mph
12 mph
2100
41°F
SE
6 mph
6 mph
April 29, wednesday
0000
34°F
SE
6 mph
6 mph
0300
32°F
SE
7 mph
7 mph
0600
32°F
SE
6 mph
6 mph
0900
39°F
SE
7 mph
7 mph
1200
41°F
E
6 mph
6 mph
1500
41°F
NE
7 mph
7 mph
