Measurements:
°C
°F
CURRENT WEATHER
17:12
Grand Marais
26°F
S 12 mph
Feels like: 16°F
Precip: 73%
World Resorts USA Grand Marais Weather

7 Day Weather Forecast

03.13
fri
DAY
26°F
S 19 mph
precip
100%
NIGHT
14°F
SE 8 mph
precip
0%
03.14
sat
DAY
22°F
NE 7 mph
precip
0%
NIGHT
22°F
SW 5 mph
precip
0%
03.15
sun
DAY
26°F
SW 19 mph
precip
0%
NIGHT
10°F
S 25 mph
precip
0%
03.16
mon
DAY
10°F
S 30 mph
precip
0%
NIGHT
2°F
S 19 mph
precip
0%
03.17
tue
DAY
6°F
SE 6 mph
precip
0%
NIGHT
14°F
N 9 mph
precip
100%
03.18
wed
DAY
20°F
N 10 mph
precip
100%
NIGHT
28°F
E 11 mph
precip
27%
03.19
thu
DAY
30°F
SE 9 mph
precip
0%
NIGHT
14°F
S 6 mph
precip
0%

Grand Marais Sea Water Temperature in March, °F

Select Year: 2025 2024 2023

The average sea surface temperature in March 2025 for Grand Marais was 0.8°F. The maximum and minimum values were 0.0°F and 1.2°F respectively.

Grand Marais on the Weather Map

Best Time to Visit Grand Marais
The most sunny months:
September 14 days
August 13 days
July 12 days
The most warm months:
August 70.1 °F
July 69.0 °F
September 63.5 °F
Warmest sea temperature:
August 61.3 °F
September 60.2 °F
October 53.1 °F
The most cold months:
January 15.2 °F
February 16.3 °F
December 22.1 °F
The most rainy months:
August 3 days
April 2 days
July 2 days
The most windy months:
November 10 mph
December 9 mph
April 9 mph
more details