Green Valley, Illinois Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Green Valley weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——85°57°—
- FridayJun 5Drizzle54%0.03″83°68°-2°
- SaturdayJun 6Showers67%—86°68°+3°
- SundayJun 7Showers58%—85°70°-1°
- MondayJun 8Light Showers63%—82°70°-3°
- TuesdayJun 9Light Drizzle39%—83°69°+1°
- WednesdayJun 10Thunderstorm24%—90°75°+7°
AQI 27 (Good), driven by Ozone. AQI down 17 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.
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
- 4:29 AM
- Moonset
- 2:00 PM
- In sign
- ♑︎ Capricorn
Fireflies pulse through the magnolias
Green Valley at a glance
- Today vs. normal: 17°F below the seasonal normal for this latitude
- Last frost: April 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 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 — Green Valley
SPC has placed Green Valley in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- 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.