Mount Vernon, South Dakota Weather
Toward the solstice glow. Day 88 of spring. Read this microseason across nine climate regions →
Mount Vernon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——78°48°—
- TuesdayJun 16Overcast——77°52°-1°
- WednesdayJun 17Drizzle33%—74°56°-3°
- ThursdayJun 18Light Drizzle10%—73°53°-1°
- FridayJun 19Overcast10%—82°49°+9°
- SaturdayJun 20Drizzle44%0.03″76°58°-6°
- SundayJun 21Light Drizzle44%0.03″67°61°-9°
AQI 33 (Good), driven by Ozone. AQI up 15 in the last 6 hours — air quality is degrading. Ozone at AQI 44 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
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 44 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
- Present
- AQI 44
- UV peak
- 4.0 at earlier today
- Sky at peak
- partly cloudy
- Projected peak
- AQI 44
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
- 5:50 AM
- Moonset
- 9:38 PM
- In sign
- ♋︎ Cancer
Toward the solstice glow
Mount Vernon at a glance
- Today vs. normal: 8°F above the seasonal normal for this latitude
- Last frost: May 8 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Mount Vernon
- Mon78°48°5%
- Tue77°52°9%
- Wed74°56°33%
- Thu73°53°10%
- Fri82°49°10%
- Sat76°58°44%
- Sun67°61°44%
- Mon65°60°22%
- Tue76°59°17%
- Wed77°56°19%
- Thu78°59°13%
- Fri80°60°24%
- Sat76°64°29%
- Sun73°59°20%
- Mon62°56°29%
- Tue76°51°30%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Mount Vernon
SPC has placed Mount Vernon in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
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 Mount Vernon
- 57363