McLaughlin, South Dakota Weather
Prairie lightning bugs rise. Day 77 of spring. Read this microseason across nine climate regions →
McLaughlin weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Heavy Drizzle58%0.06″69°58°—
- ThursdayJun 4Heavy Drizzle25%0.04″80°53°+11°
- FridayJun 5Overcast22%—82°61°+2°
- SaturdayJun 6Overcast——88°61°+6°
- SundayJun 7Overcast44%—95°70°+7°
- MondayJun 8Showers44%—81°60°-14°
- TuesdayJun 9Overcast19%—103°64°+22°
Ozone at AQI 45 — peak already passed at 1 PM under overcast skies. AQI up 8 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 45 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 45
- UV peak
- 0.6 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 45
PM × Wind × Precip
PM2.5 at 5.9 µg/m³ (AQI 33) with a 0.75 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.75
- 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
- 5:35 AM
- Moonset
- 2:27 PM
- In sign
- ♑︎ Capricorn
Prairie lightning bugs rise
McLaughlin at a glance
- Today vs. normal: 69°F — typical for the season
- Last frost: May 21 (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 — McLaughlin
SPC has placed McLaughlin 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.