Grand Marais, Michigan Weather
Fireflies rise from the lawn. Day 78 of spring. Read this microseason across nine climate regions →
Grand Marais weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Rain33%0.34″77°61°—
- SaturdayJun 6Foggy31%—64°51°-13°
- SundayJun 7Foggy——65°46°+1°
- MondayJun 8Overcast——73°55°+8°
- TuesdayJun 9Showers24%0.61″61°54°-12°
- WednesdayJun 10Foggy11%—70°54°+9°
- ThursdayJun 11Foggy10%—82°60°+12°
AQI 107 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 26 in the last 6 hours — air quality is degrading. Ozone at AQI 76 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 34 by mid-afternoon.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 76 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 34 by mid-afternoon.
- Present
- AQI 76
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 34
PM × Wind × Precip
PM2.5 at 8.6 µg/m³, PM10 at 9.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.91
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
The higher the clouds, the finer the weather.
- Moonrise
- 5:03 AM
- Moonset
- 2:32 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Grand Marais at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: May 26 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Grand Marais
SPC has placed Grand Marais in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.