Grassland Colony, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Grassland Colony weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast12%—88°60°—
- SundayJul 5Clear——89°63°+1°
- MondayJul 6Thunderstorm52%—97°66°+8°
- TuesdayJul 7T-storm w/ Hail75%0.06″81°64°-16°
- WednesdayJul 8Drizzle75%—80°60°-1°
- ThursdayJul 9Drizzle19%0.04″75°60°-5°
- FridayJul 10Light Drizzle19%—71°59°-4°
AQI 42 (Good), driven by Ozone. AQI down 6 over the last 6 hours (gradual decline). Ozone at AQI 46 now. With UV 6.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 37 around 1 PM.
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 46 now. With UV 6.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 37 around 1 PM.
- Present
- AQI 46
- UV peak
- 6.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 37
PM × Wind × Precip
PM2.5 at 6.7 µg/m³ (AQI 37) with a 0.81 fine-to-coarse ratio and 2 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:40 PM
- Moonset
- 10:35 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Grassland Colony at a glance
- Today vs. normal: 19°F above the seasonal normal for this latitude
- Last frost: May 20 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Grassland Colony
- Sat88°60°12%
- Sun89°63°1%
- Mon97°66°52%
- Tue81°64°75%
- Wed80°60°75%
- Thu75°60°19%
- Fri71°59°19%
- Sat80°56°17%
- Sun85°58°7%
- Mon89°61°8%
- Tue95°65°12%
- Wed98°70°12%
- Thu91°72°14%
- Fri81°64°19%
- Sat83°61°19%
- Sun89°56°19%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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 — Grassland Colony
SPC has placed Grassland Colony in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3MRGLMarginal Risk
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.
ZIP codes in Grassland Colony
- 57481