Grand Marsh, Wisconsin Weather
Fireflies rise from the lawn. Day 76 of spring. Read this microseason across nine climate regions →
Grand Marsh weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——82°43°—
- ThursdayJun 4Rain22%0.20″85°56°+3°
- FridayJun 5Showers82%0.11″74°64°-11°
- SaturdayJun 6Drizzle60%—78°61°+4°
- SundayJun 7Overcast——78°57°0°
- MondayJun 8Light Drizzle24%—77°58°-1°
- TuesdayJun 9Light Drizzle32%—76°66°-1°
Ozone at AQI 83 — peak already passed at 1 PM under clear skies. AQI up 18 in the last 6 hours — air quality is degrading. Levels should ease through evening.
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 83 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 83
- UV peak
- 5.9 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 83
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
- 4:06 AM
- Moonset
- 12:42 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Grand Marsh at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: May 9 (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 3, 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 Marsh
SPC has placed Grand Marsh in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
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.