Winnebago, Illinois Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Winnebago weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——86°57°—
- FridayJun 5Heavy Rain59%1.2″76°67°-10°
- SaturdayJun 6Drizzle56%0.42″81°65°+5°
- SundayJun 7Overcast16%—83°66°+2°
- MondayJun 8Light Showers50%—80°64°-3°
- TuesdayJun 9Light Drizzle34%—80°69°0°
- WednesdayJun 10Light Drizzle22%—87°70°+7°
AQI 26 (Good), driven by Ozone. AQI down 16 over the last 6 hours — air quality is improving sharply.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 5 PM.
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:34 AM
- Moonset
- 1:52 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Winnebago at a glance
- Today vs. normal: 16°F below the seasonal normal for this latitude
- Last frost: April 30 (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 4, 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 — Winnebago
SPC has placed Winnebago in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
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.