Harrold, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Harrold weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast15%—87°62°—
- SundayJul 5Clear——91°65°+4°
- MondayJul 6Showers57%0.39″102°70°+11°
- TuesdayJul 7Heavy Showers67%0.69″99°66°-3°
- WednesdayJul 8Light Drizzle67%—83°65°-16°
- ThursdayJul 9Drizzle14%0.04″84°64°+1°
- FridayJul 10Clear14%—79°61°-5°
AQI 53 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 18.7 µg/m³, PM10 at 26.5 µg/m³ — typical background levels with no transport signature.
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 7.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 44 around 1 PM.
- Present
- AQI 47
- UV peak
- 7.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 44
PM × Wind × Precip
PM2.5 at 18.7 µg/m³, PM10 at 26.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.71
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 11:41 PM
- Moonset
- 10:41 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Harrold at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: May 13 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57536
16-Day Forecast — Harrold
- Sat87°62°15%
- Sun91°65°1%
- Mon102°70°57%
- Tue99°66°67%
- Wed83°65°67%
- Thu84°64°14%
- Fri79°61°14%
- Sat81°57°14%
- Sun88°62°7%
- Mon89°67°7%
- Tue96°68°13%
- Wed103°71°13%
- Thu91°74°12%
- Fri83°66°18%
- Sat84°61°14%
- Sun88°60°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 — Harrold
SPC includes Harrold 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 Harrold
- 57536