Green Grass, South Dakota Weather
Prairie lightning bugs rise. Day 76 of spring. Read this microseason across nine climate regions →
Green Grass weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Drizzle45%0.04″69°59°—
- ThursdayJun 4Light Rain21%0.10″84°55°+15°
- FridayJun 5Overcast24%—83°62°-1°
- SaturdayJun 6Clear——94°64°+11°
- SundayJun 7Overcast32%—96°70°+2°
- MondayJun 8Overcast32%—82°65°-14°
- TuesdayJun 9Overcast21%—95°60°+13°
Ozone at AQI 42 — peak already passed at 1 PM under overcast skies. AQI up 5 over the last 6 hours (gradual rise). 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 42 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 42
- UV peak
- 3.1 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 42
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
- 4:59 AM
- Moonset
- 1:24 PM
- In sign
- ♑︎ Capricorn
Prairie lightning bugs rise
Green Grass at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: May 17 (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 — Green Grass
SPC has placed Green Grass in the Slight Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWSLGTSlight Risk
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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.