Chelsea, Wisconsin Weather
Prairie lightning bugs rise. Day 76 of spring. Read this microseason across nine climate regions →
Chelsea weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——79°48°—
- ThursdayJun 4Light Showers26%0.57″78°58°-1°
- FridayJun 5Light Showers69%0.20″77°61°-1°
- SaturdayJun 6Heavy Drizzle48%—82°58°+5°
- SundayJun 7Overcast——76°57°-6°
- MondayJun 8Light Drizzle23%0.01″74°54°-2°
- TuesdayJun 9Drizzle26%—75°61°+1°
Ozone at AQI 71 — peak already passed at 1 PM under clear skies. AQI up 21 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 71 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 71
- UV peak
- 2.2 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 71
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
- 4:15 AM
- Moonset
- 12:38 PM
- In sign
- ♑︎ Capricorn
Prairie lightning bugs rise
Chelsea at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: May 18 (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 — Chelsea
SPC has placed Chelsea in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWMRGLMarginal Risk
- 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.