World Resorts USA Grand Marais Weather

Grand Marais weather in May

Weather in Grand Marais: May

Average day temperature: 51.1°F
Average night temperature: 43.2°F
Sea water temperature: 36.5°F
Number of sunny days: 10 days
Day length: 14.5 - 15.7 hours
Number of rainy days: 1 day
Precipitation totals: 0.9 in.

Air temperature in May, °F

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2022
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Day temperature   
Night temperature

The highest day temperature during May of 2024 was 62°F. At the same time the lowest night temperature was 36°F. Daily and nightly averages during May were 50.8°F and 42.7°F.

Sea water temperature in Grand Marais in May, °F

Show year:
2024
2023
2022
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28
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34
37
40
43
46

The average sea water temperature in May of 2024 was 37.5°F. The highest and lowest sea temperatures during the month were 39.2°F and 34.7°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
32%
32%
35%

Number of sunny, partly cloudy and cloudy days in May is almost equal.

Precipitation total in May, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.3
0.5
0.8
1.0
1.3
1.6
1.8
1.5
1.3
1.5
1.3

Precipitation total value in Grand Marais in May is 0.9 in. Other months of the year show relatively similar values.

Wind speed in May, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.7
3.4
5.1
6.8
8.5
10.2
11.9
13.6
9.8
9.9
8.5
7.4
6.9
6.0
6.7
9.9
9.5
9.5
9.6
9.8
9.9
8.5
7.4
6.9
6.0
6.7
7.7
9.9
9.5
9.5
9.6

The average wind speed value in May is 7.7 mph

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.6
3.2
4.8
6.5
8.1
9.7
11.3
2.8
4.0
5.5
8.1
9.1
9.4
8.3
4.6
4.9
4.2
3.7
2.8
4.0
5.5
8.1
9.1
9.4
8.3
7.7
4.6
4.9
4.2
3.7

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 7.7.

Best time for vacation in Grand Marais

Sunniest months:
September 15 days
August 14 days
July 13 days
Warmest months:
August 68.2 °F
July 67.0 °F
September 62.6 °F
Warmest sea temp:
August 60.0 °F
September 59.3 °F
October 52.6 °F
Coldest months:
February 18.9 °F
January 19.4 °F
December 25.9 °F
Rainiest months:
August 4 days
April 2 days
July 2 days
Windiest months:
April 9.9 mph
November 9.9 mph
December 9.8 mph

Grand Marais on a weather map

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24 Hours Forecast
Grand Marais
Local time: 01:49
April 24, thursday
0300
39°F
SE
6 mph
0600
39°F
S
6 mph
0900
41°F
S
3 mph
1200
45°F
W
7 mph
1500
45°F
NW
7 mph
1800
41°F
W
7 mph
2100
39°F
SW
6 mph
April 25, friday
0000
39°F
W
7 mph
Units of measurement: °C / °F