Frankfort, South Dakota Weather
Lesser ripening, greater heat. Day 90 of spring. Read this microseason across nine climate regions →
Frankfort weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 16Overcast22%—74°46°—
- WednesdayJun 17Rain47%0.20″67°57°-7°
- ThursdayJun 18Light Rain—0.09″68°54°+1°
- FridayJun 19Light Rain—0.07″74°52°+6°
- SaturdayJun 20Overcast29%—75°52°+1°
- SundayJun 21Overcast37%—73°50°-2°
- MondayJun 22Overcast34%—62°57°-11°
AQI 40 (Good), driven by PM2.5. AQI up 13 over the last 6 hours (gradual rise). PM2.5 at 12.0 µg/m³, PM10 at 14.6 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 38. Overcast through the UV peak window (cloud cover ~74%) — afternoon ozone should stay flat.
- Present
- AQI 38
- UV peak
- 0.5 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
PM × Wind × Precip
PM2.5 at 12.0 µg/m³, PM10 at 14.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.82
- Wind
- breezy
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 8:17 AM
- Moonset
- 11:30 PM
- In sign
- ♋︎ Cancer
Lesser ripening, greater heat
Frankfort at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: May 15 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Frankfort
- Tue74°46°22%
- Wed67°57°47%
- Thu68°54°9%
- Fri74°52°4%
- Sat75°52°29%
- Sun73°50°37%
- Mon62°57°34%
- Tue80°52°19%
- Wed87°56°18%
- Thu96°64°19%
- Fri101°63°26%
- Sat79°56°25%
- Sun86°58°26%
- Mon86°60°26%
- Tue81°59°29%
- Wed95°62°19%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 17, 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 — Frankfort
SPC has placed Frankfort in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- 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.
ZIP codes in Frankfort
- 57440