Gregory, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Gregory weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast22%—86°64°—
- SundayJul 5Mostly Clear——86°64°0°
- MondayJul 6Overcast18%—95°66°+9°
- TuesdayJul 7Heavy Drizzle37%0.01″96°69°+1°
- WednesdayJul 8Light Drizzle55%—80°67°-16°
- ThursdayJul 9Light Showers26%0.07″87°63°+7°
- FridayJul 10Partly Cloudy26%—82°62°-5°
AQI 68 (Moderate), driven by PM2.5. AQI up 8 over the last 6 hours (gradual rise). PM2.5 at 26.8 µg/m³ (AQI 84) with a 0.72 fine-to-coarse ratio and 3 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 42 now. With UV 8.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 46 around 1 PM.
- Present
- AQI 42
- UV peak
- 8.2 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 46
PM × Wind × Precip
PM2.5 at 26.8 µg/m³ (AQI 84) with a 0.72 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.72
- 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
- 11:38 PM
- Moonset
- 10:41 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Gregory at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: May 5 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57533
16-Day Forecast — Gregory
- Sat86°64°22%
- Sun86°64°5%
- Mon95°66°18%
- Tue96°69°37%
- Wed80°67°55%
- Thu87°63°26%
- Fri82°62°26%
- Sat81°58°12%
- Sun88°62°7%
- Mon89°64°6%
- Tue95°64°9%
- Wed101°74°13%
- Thu91°73°10%
- Fri89°67°16%
- Sat84°60°23%
- Sun86°58°30%
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 — Gregory
SPC includes Gregory 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 Gregory
- 57533