Seneca, South Dakota Weather
Lesser ripening, greater heat. Day 90 of spring. Read this microseason across nine climate regions →
Seneca weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 16Light Drizzle20%0.02″77°46°—
- WednesdayJun 17Rain63%0.34″67°56°-10°
- ThursdayJun 18Drizzle11%0.03″69°54°+2°
- FridayJun 19Light Drizzle—0.02″76°50°+7°
- SaturdayJun 20Light Drizzle62%—73°49°-3°
- SundayJun 21Overcast62%—73°49°0°
- MondayJun 22Overcast26%—63°54°-10°
AQI 36 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM scrubbed by 3 hours of recent rain — PM2.5 down to 9.1 µg/m³, PM10 to 10.2 µg/m³.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM scrubbed by 3 hours of recent rain — PM2.5 down to 9.1 µg/m³, PM10 to 10.2 µg/m³.
- PM2.5/PM10
- 0.89
- Wind
- light
- Recent rain
- 3h in last 6h
- Pattern
- washed out
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
- 8:22 AM
- Moonset
- 11:36 PM
- In sign
- ♋︎ Cancer
Lesser ripening, greater heat
Seneca at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: May 16 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Seneca
- Tue77°46°20%
- Wed67°56°63%
- Thu69°54°11%
- Fri76°50°6%
- Sat73°49°62%
- Sun73°49°62%
- Mon63°54°26%
- Tue81°53°27%
- Wed92°56°11%
- Thu102°62°21%
- Fri104°56°21%
- Sat77°53°25%
- Sun83°59°30%
- Mon78°59°20%
- Tue80°58°24%
- Wed94°62°33%
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 — Seneca
SPC has placed Seneca 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 Seneca
- 57473