Grass Ranch Colony, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Grass Ranch Colony weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle10%0.01″89°63°—
- SundayJul 5Clear——91°65°+2°
- MondayJul 6Overcast25%—96°67°+5°
- TuesdayJul 7Heavy Showers41%0.41″99°70°+3°
- WednesdayJul 8Light Showers60%0.06″82°69°-17°
- ThursdayJul 9Showers16%0.28″87°63°+5°
- FridayJul 10Clear16%—81°61°-6°
AQI 57 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 20.3 µg/m³ (AQI 72) with a 0.68 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
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 47 now. With UV 7.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 48 around 1 PM.
- Present
- AQI 47
- UV peak
- 7.6 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 48
PM × Wind × Precip
PM2.5 at 20.3 µg/m³ (AQI 72) with a 0.68 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.68
- Wind
- light
- 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
- 11:37 PM
- Moonset
- 10:38 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Grass Ranch Colony at a glance
- Today vs. normal: 16°F above the seasonal normal for this latitude
- Last frost: May 8 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Grass Ranch Colony
- Sat89°63°10%
- Sun91°65°2%
- Mon96°67°25%
- Tue99°70°41%
- Wed82°69°60%
- Thu87°63°16%
- Fri81°61°16%
- Sat82°58°13%
- Sun87°63°8%
- Mon88°64°5%
- Tue94°64°8%
- Wed102°72°14%
- Thu90°73°14%
- Fri84°66°23%
- Sat84°60°15%
- Sun86°58°20%
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 — Grass Ranch Colony
SPC includes Grass Ranch Colony in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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 Grass Ranch Colony
- 57355