Vivian, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Vivian weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Drizzle30%0.04″89°62°—
- SundayJul 5Clear——94°65°+5°
- MondayJul 6Overcast33%—101°69°+7°
- TuesdayJul 7Showers60%0.08″100°68°-1°
- WednesdayJul 8Light Drizzle60%—76°67°-24°
- ThursdayJul 9Light Drizzle19%—83°63°+7°
- FridayJul 10Light Drizzle19%—94°67°+11°
AQI 57 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 19.4 µg/m³ (AQI 70) with a 0.81 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 30 now. With UV 4.7 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 19 around 1 PM.
- Present
- AQI 30
- UV peak
- 4.7 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 19
PM × Wind × Precip
PM2.5 at 19.4 µg/m³ (AQI 70) with a 0.81 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.81
- 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
- 11:43 PM
- Moonset
- 10:44 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Vivian at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: May 10 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57576
16-Day Forecast — Vivian
- Sat89°62°30%
- Sun94°65°1%
- Mon101°69°33%
- Tue100°68°60%
- Wed76°67°60%
- Thu83°63°19%
- Fri94°67°19%
- Sat89°67°16%
- Sun89°60°6%
- Mon113°71°7%
- Tue103°75°14%
- Wed89°69°16%
- Thu97°67°15%
- Fri103°71°20%
- Sat99°75°21%
- Sun108°79°26%
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 — Vivian
SPC includes Vivian 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 Vivian
- 57576