Marvin, South Dakota Weather
Prairie lightning bugs rise. Day 77 of spring. Read this microseason across nine climate regions →
Marvin weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Light Drizzle58%0.01″81°63°—
- ThursdayJun 4Rain45%0.23″79°64°-2°
- FridayJun 5Rain56%0.16″76°62°-3°
- SaturdayJun 6Overcast——81°60°+5°
- SundayJun 7Light Drizzle15%—87°63°+6°
- MondayJun 8Heavy Drizzle42%—79°66°-8°
- TuesdayJun 9Foggy26%—90°62°+11°
Ozone at AQI 43 now. AQI up 10 over the last 6 hours (gradual rise). With UV 0.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 10 by mid-afternoon.
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 43 now. With UV 0.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 10 by mid-afternoon.
- Present
- AQI 43
- UV peak
- 0.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 10
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 5.5 µg/m³, PM10 to 6.3 µg/m³.
- PM2.5/PM10
- 0.87
- Wind
- calm
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 5:16 AM
- Moonset
- 2:12 PM
- In sign
- ♑︎ Capricorn
Prairie lightning bugs rise
Marvin at a glance
- Today vs. normal: 6°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 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 — Marvin
SPC has placed Marvin in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWSLGTSlight Risk
- DAY 3MRGLMarginal Risk
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.