Grand Marais, Minnesota Weather
Prairie lightning bugs rise. Day 78 of spring. Read this microseason across nine climate regions →
Grand Marais weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Heavy Drizzle57%0.07″72°52°—
- SaturdayJun 6Overcast——71°52°-1°
- SundayJun 7Overcast——61°49°-10°
- MondayJun 8Drizzle50%0.01″63°52°+2°
- TuesdayJun 9Light Drizzle50%0.02″63°55°0°
- WednesdayJun 10Foggy30%—70°56°+7°
- ThursdayJun 11Foggy30%—74°59°+4°
AQI 50 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 48. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 48. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 48
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 11
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 6.3 µg/m³, PM10 to 7.2 µg/m³.
- PM2.5/PM10
- 0.88
- Wind
- calm
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 5:25 AM
- Moonset
- 2:47 PM
- In sign
- ♒︎ Aquarius
Prairie lightning bugs rise
Grand Marais at a glance
- Today vs. normal: 12°F below the seasonal normal for this latitude
- Last frost: June 2 (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.