30.12
tue
tue
Day
12°F
E 4 mph
Precip.
100%
100%
Night
10°F
SE 11 mph
Precip.
0%
0%
31.12
wed
wed
Day
5°F
SE 16 mph
Precip.
0%
0%
Night
-2°F
SE 18 mph
Precip.
0%
0%
01.01
thu
thu
Day
7°F
SE 14 mph
Precip.
0%
0%
Night
-2°F
E 12 mph
Precip.
0%
0%
02.01
fri
fri
Day
7°F
E 12 mph
Precip.
0%
0%
Night
3°F
SE 8 mph
Precip.
0%
0%
03.01
sat
sat
Day
9°F
SE 4 mph
Precip.
0%
0%
Night
9°F
SW 2 mph
Precip.
0%
0%
04.01
sun
sun
Day
27°F
NW 10 mph
Precip.
100%
100%
Night
28°F
NE 6 mph
Precip.
77%
77%
05.01
mon
mon
Day
34°F
E 6 mph
Precip.
0%
0%
Night
10°F
SE 16 mph
Precip.
0%
0%
06.01
tue
tue
Day
10°F
SE 8 mph
Precip.
0%
0%
Night
14°F
E 5 mph
Precip.
0%
0%
07.01
wed
wed
Day
25°F
SE 10 mph
Precip.
0%
0%
Night
18°F
NW 5 mph
Precip.
0%
0%
08.01
thu
thu
Day
21°F
E 3 mph
Precip.
0%
0%
Night
19°F
SE 5 mph
Precip.
0%
0%
09.01
fri
fri
Day
30°F
SE 5 mph
Precip.
0%
0%
Night
16°F
S 6 mph
Precip.
0%
0%
10.01
sat
sat
Day
19°F
N 2 mph
Precip.
0%
0%
Night
12°F
S 8 mph
Precip.
0%
0%
11.01
sun
sun
Day
16°F
E 6 mph
Precip.
0%
0%
Night
19°F
E 12 mph
Precip.
0%
0%
12.01
mon
mon
Day
28°F
NE 16 mph
Precip.
100%
100%
Night
30°F
NE 9 mph
Precip.
100%
100%
sea water
temperature
temperature
| Grand Marais |
monthly
weather
weather
| Grand Marais |
current
weather
weather
| Grand Marais |
7 days
forecast
forecast
| Grand Marais |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 38.4°F. The highest and lowest sea temperatures during the month were 40.3°F and 36.9°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 38.1°F. The highest and lowest sea temperatures during the month were 39.7°F and 36.3°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: 17:25
December 30, tuesday
1800
16°F
S
8 mph
8 mph
2100
14°F
S
9 mph
9 mph
December 31, wednesday
0000
10°F
SE
11 mph
11 mph
0300
7°F
SE
11 mph
11 mph
0600
3°F
SE
13 mph
13 mph
0900
1°F
SE
16 mph
16 mph
1200
5°F
SE
16 mph
16 mph
1500
7°F
SE
15 mph
15 mph
