Measurements:
°C
°F
Grand Marais
72°F
SE 2 mph
Feels like: 72°F
Precip: 1%
World Resorts USA Grand Marais Weather October Weather in Grand Marais

Grand Marais Weather: October

Average Day Temperature: 49.8°F
Average Night Temperature: 43.3°F
Sea Water Temperature: 53.1°F
Number of Sunny Days: 10 days
Sunshine Hours: 10.0 - 11.6 hours
Number of Rainy Days: 1 day
Precipitation Totals: 0.6 in

Air Temperature in October, °F

Select Year: 2025 2024 2023

The highest day temperature in October 2025 was 68°F. The lowest night temperature was 34°F. The average values for day and night temperatures during October were 52.4°F и 47.3°F respectivly.

Grand Marais Water Sea Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Grand Marais was 54.2°F. The maximum and minimum values were 49.6°F and 61.4°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during October. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in October, in

Precipitation total in October for Grand Marais is 0.6 in. It makes october one of the least rainy months of the year.

Wind Speed in October, mph

The average wind speed in October is 8.3 mph.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Grand Marais in October is 6.0 hours.

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
June 2 days
The most windy months:
November 10 mph
December 9 mph
January 9 mph

Grand Marais on the Weather Map

USA Resorts:
NAME
Boston +94
Chicago +88
Hawaii +80
Houston +90
Las Vegas +120
Los Angeles +106
Maui +76
Miami +100
Myrtle Beach +96
New York +114
San Diego +96
San Francisco +76
Santa Monica +84
Sarasota +102
Tampa +100
24 Hours Weather Forecast
Grand Marais
Local time: 13:23
15 jul, wednesday
1500 74°F
SE
4 mph
1800 74°F
SE
7 mph
2100 72°F
SE
6 mph
16 jul, thursday
0000 74°F
SE
9 mph
0300 64°F
SE
5 mph
0600 62°F
S
4 mph
0900 66°F
S
4 mph
1200 72°F
N
4 mph