Glenham, South Dakota Weather
Prairie lightning bugs rise. Day 77 of spring. Read this microseason across nine climate regions →
Glenham weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Light Drizzle16%—80°54°—
- FridayJun 5Overcast21%—82°58°+2°
- SaturdayJun 6Overcast——89°62°+7°
- SundayJun 7Light Drizzle31%—96°71°+7°
- MondayJun 8Drizzle41%—84°63°-12°
- TuesdayJun 9Overcast28%—104°65°+20°
- WednesdayJun 10Light Drizzle28%—98°71°-6°
PM2.5 at 5.9 µg/m³ (AQI 33) with a 0.81 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust. AQI flat over the last 6 hours (within ±4 points).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 5.9 µg/m³ (AQI 33) with a 0.81 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.81
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 5:31 AM
- Moonset
- 2:25 PM
- In sign
- ♑︎ Capricorn
Prairie lightning bugs rise
Glenham at a glance
- Today vs. normal: 10°F below the seasonal normal for this latitude
- Last frost: May 19 (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 — Glenham
SPC has placed Glenham 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.