Grand Marais, MN Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Mon
Jul 13
Mostly Clear
Close Hourly
-º / 61º 3% W 14 mph 70%
8pm Sunny 71º 0% WSW 14 mph 52%
9pm Clear 70º 1% W 11 mph 55%
10pm Mostly Clear 70º 1% WSW 11 mph 59%
11pm Mostly Clear 67º 1% WSW 8 mph 71%
Tue
Jul 14
Sunny
View Hourly
74º / 58º 4% WNW 9 mph 67%
12am Clear 66º 1% WSW 7 mph 74%
1am Clear 65º 1% WSW 9 mph 76%
2am Clear 64º 4% W 8 mph 81%
3am Clear 62º 2% W 7 mph 82%
4am Clear 62º 3% W 7 mph 84%
5am Clear 62º 3% W 7 mph 82%
6am Sunny 63º 3% W 7 mph 79%
7am Sunny 65º 3% W 8 mph 77%
8am Sunny 64º 3% W 8 mph 80%
9am Sunny 66º 2% W 8 mph 76%
10am Sunny 67º 2% WNW 8 mph 74%
11am Sunny 69º 2% WNW 9 mph 72%
12pm Sunny 70º 1% W 9 mph 68%
1pm Sunny 72º 4% W 8 mph 66%
2pm Sunny 71º 4% WNW 8 mph 66%
3pm Sunny 73º 1% WNW 9 mph 62%
4pm Mostly Sunny 73º 1% WNW 8 mph 58%
5pm Sunny 73º 1% WNW 9 mph 55%
6pm Sunny 73º 1% NW 8 mph 55%
7pm Partly Cloudy 71º 0% NW 7 mph 57%
8pm Partly Cloudy 68º 0% NNW 6 mph 57%
9pm Partly Cloudy 66º 0% NNW 4 mph 59%
10pm Partly Cloudy 65º 0% NNW 5 mph 58%
11pm Partly Cloudy 64º 0% NNW 4 mph 57%
Wed
Jul 15
Cloudy
View Hourly
65º / 57º 5% NW 6 mph 62%
12am Partly Cloudy 63º 0% NNW 4 mph 57%
1am Partly Cloudy 62º 1% NW 5 mph 59%
2am Mostly Clear 62º 1% NNW 4 mph 60%
3am Mostly Clear 60º 1% NNW 5 mph 63%
4am Mostly Clear 59º 1% NNW 6 mph 66%
5am Partly Cloudy 60º 1% NNW 5 mph 65%
6am Partly Cloudy 59º 1% NNW 5 mph 66%
7am Mostly Cloudy 62º 1% NNW 6 mph 63%
8am Mostly Cloudy 62º 5% NNW 5 mph 63%
9am Cloudy 63º 0% NNW 4 mph 62%
10am Cloudy 64º 0% NNW 3 mph 59%
11am Cloudy 64º 0% NW 4 mph 62%
12pm Cloudy 63º 4% NW 4 mph 62%
1pm Cloudy 64º 5% NW 4 mph 62%
2pm Cloudy 63º 1% NW 4 mph 63%
3pm Cloudy 64º 1% NW 5 mph 61%
4pm Cloudy 63º 1% NW 4 mph 62%
5pm Cloudy 64º 1% NW 5 mph 61%
6pm Cloudy 63º 1% NW 5 mph 62%
7pm Cloudy 62º 1% WNW 4 mph 65%
Thu
Jul 16
AM Showers 61º / 53º 48% N 5 mph 76%
Fri
Jul 17
Showers 59º / 52º 46% ENE 9 mph 79%
Sat
Jul 18
AM Showers 63º / 52º 37% N 8 mph 81%
Sun
Jul 19
Partly Cloudy 61º / 51º 23% NNW 6 mph 81%
Mon
Jul 20
PM Showers 62º / 53º 38% W 7 mph 85%

Weather Radar for Grand Marais, MN See Radar

* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Grand Marais, MN

Tonight
Low : 54ºF
WSW wind 10 to 15 kt, with gusts as high as 25 kt. Patchy fog before 8pm. Waves 1 to 2 ft.
Tuesday
High : 74ºF
W wind around 10 kt, with gusts as high as 20 kt. Patchy smoke after 5pm. Waves around 1 ft.
Tuesday Night
Low : 49ºF
Variable winds 5 kt or less. Patchy smoke before 7pm. Waves 1 ft or less.
Wednesday
High : 66ºF
Variable winds 5 kt or less. Partly sunny. Waves 1 ft or less.
Wednesday Night
Low : 47ºF
Variable winds 5 kt or less. A slight chance of showers after 1am. Waves 1 ft or less.
Thursday
High : 63ºF
Variable winds 5 kt or less. A chance of showers before 1pm. Waves 1 ft or less.
Thursday Night
Low : 49ºF
Variable winds 5 kt or less. A chance of showers, then showers likely and possibly a thunderstorm after 1am. Waves 1 ft or less.
Friday
High : 63ºF
ENE wind around 10 kt, with gusts as high as 20 kt. A chance of showers and thunderstorms. Waves around 1 ft.
Friday Night
Low : 49ºF
NNE wind 5 to 10 kt. A chance of showers. Waves 1 ft or less.

NOAA Buoy Data Near Grand Marais, MN See Map

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    Wind Speed Forecast for Grand Marais, MN

    TuesdayWednesday
    Wind Speed (MPH) 1477898646544
    1am5am9am1pm5pm9pm1am5am9am1pm5pm9pm
    MPH 1477898646544
    DIR WSWWSWWWWWNWNNWNNWNNWNNWNWNW

    Current Weather Conditions In Grand Marais, MN

    As Of: 7 minutes ago

    • 71ºF
    • 71ºF
    • 14mph
    • 0º (WSW)
    • 23mph
    • Sunny
    • 10mi
    • 29.93"
    • 52%
    • 0ºF

    The weather right now in Grand Marais, MN is Sunny. The current temperature is 71°F, and the expected high and low for today, Monday, July 13, 2026, are -° high temperature and 61°F low temperature. The wind is currently blowing at 14 miles per hour, and coming from the West Southwest. The wind is gusting to 23 mph. With the wind and the atmosphere the temperature feels like 71° Fahrenheit. Expected precipitation is 0 percent, with current humidity at 52 percent, and air pressure at 29.93 in. Visibility is 10 nautical miles. There are 4 current weather alert(s).

    Weather Alerts
    Extreme Heat Warning - 1:40pm Mon Jul 13 2026

    ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING...

    WHAT: Dangerously hot conditions with temperatures up to 100.

    WHERE: Koochiching, Itasca, Central and North St. Louis, Cook and
    Lake Counties. This includes the Tribal Lands of the Grand Portage
    Reservation and the Bois Forte Band, Nett Lake, Lake Vermilion
    and, Deer Creek areas. Other locations including Voyageurs
    National Park. The entire Boundary Waters is also included.

    WHEN: Until 9 PM CDT this evening.

    IMPACTS: Heat related illnesses increase significantly during
    extreme heat and high humidity events.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Drink plenty of fluids, stay in an air-conditioned room, stay out of
    the sun, and check up on relatives and neighbors.

    Take extra precautions when outside. Wear lightweight and loose
    fitting clothing. Try to limit strenuous activities to early morning
    or evening. Take action when you see symptoms of heat exhaustion and
    heat stroke.

    &&

    Red Flag Warning - 1:32pm Mon Jul 13 2026

    ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH-CENTRAL AND NORTHEAST MINNESOTA...

    * AFFECTED AREA...In Minnesota, North Itasca, Central St. Louis,
    Southern Lake, Southern Cook, North Cass, South Itasca and
    Carlton and South St. Louis.

    * WINDS...Southwest 10 to 15 mph with gusts up to 30 mph.

    * RELATIVE HUMIDITY...As low as 20 percent.

    IMPACTS: The rapid spread of any fires may occur due to the
    forecast weather conditions and dry fuels per guidance from
    local land management agencies.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    A Red Flag Warning on Monday means that critical fire weather
    conditions are either occurring now, or will shortly. A
    combination of strong winds, low relative humidity, and warm
    temperatures can contribute to extreme fire behavior.

    &&

    Small Craft Advisory - 3:18pm Mon Jul 13 2026

    ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CDT TUESDAY... ...DENSE FOG ADVISORY IS CANCELLED...

    WHAT: Southwest winds 10 to 20 kt with gusts up to 30 kt and
    waves 3 to 6 ft.

    WHERE: Grand Portage to Grand Marais MN.

    WHEN: Until 6 AM CDT Tuesday.

    IMPACTS: Conditions will be hazardous to small craft.

    ADDITIONAL DETAILS: Occasional gusts near gale force are
    possible between Grand Portage and Isle Royale late this
    afternoon into the early evening.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Anyone operating a smaller vessel should avoid navigating in
    hazardous conditions.

    &&

    Air Quality Alert - 3:05pm Mon Jul 13 2026

    ...AIR QUALITY ALERT IN EFFECT FROM 7 AM CDT TUESDAY TO 11 AM CDT THURSDAY...

    WHAT: The Minnesota Pollution Control Agency has issued an Air
    Quality Alert for fine particles pollution. The Air Quality Index
    (AQI) is expected to reach the Purple or Very Unhealthy category.

    WHERE: Northeast Minnesota.

    WHEN: From 7 AM CDT Tuesday to 11 AM CDT Thursday.

    IMPACTS: The risk of health effects is increased for everyone.

    ADDITIONAL DETAILS: Heavy smoke from several large wildfires
    across northeast Minnesota and Canada will move south behind a
    frontal boundary across much of northeast Minnesota beginning on
    Tuesday. High temperatures will be in the 90s across the alert
    area Tuesday, and the combination of wildfire smoke and extreme
    heat amplifies health risks. Heavy smoke may move further south
    into Minnesota Tuesday night into Wednesday morning, so the air
    quality alert may need to be expanded. Additional rounds of heavy
    smoke are possible across the region through at least Thursday
    morning.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Sensitive groups, such as people with lung disease (including
    asthma), heart disease, and children and older adults, should
    avoid all physical activities outdoors. The general public should
    avoid prolonged or heavy exertion. Reduce or eliminate activities
    that contribute to air pollution, such as outdoor burning, and
    use of residential wood burning devices. Reduce vehicle trips and
    vehicle idling as much as possible. Keep windows closed overnight
    to prevent smoke from getting indoors.

    &&

    For information on current air quality conditions in your area;
    and to sign up for daily air quality forecasts and alert;
    notifications by email, text message, phone, or the EPA AirNow;
    mobile app, visit https://www.pca.state.mn.us/air-water-land-;
    climate/current-air- quality-conditions. You can find additional;
    information about health and air quality at;
    https://www.pca.state.mn.us/air-water-land- climate/air-quality-;
    and-health.