Webster, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Webster weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Partly Cloudy——84°60°—
- SundayJul 5Clear——87°64°+3°
- MondayJul 6Showers43%0.53″93°65°+6°
- TuesdayJul 7Thunderstorm57%0.85″89°63°-4°
- WednesdayJul 8Heavy Drizzle74%0.01″78°62°-11°
- ThursdayJul 9Light Drizzle17%0.01″75°59°-3°
- FridayJul 10Overcast17%—70°59°-5°
AQI 55 (Moderate), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 46 now. With UV 6.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 37 around 1 PM.
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 46 now. With UV 6.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 37 around 1 PM.
- Present
- AQI 46
- UV peak
- 6.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 37
PM × Wind × Precip
PM2.5 at 7.9 µg/m³ (AQI 44) with a 0.81 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.81
- Wind
- light
- 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
- 11:34 PM
- Moonset
- 10:30 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Webster at a glance
- Today vs. normal: 15°F above the seasonal normal for this latitude
- Last frost: May 18 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57274
16-Day Forecast — Webster
- Sat84°60°9%
- Sun87°64°1%
- Mon93°65°43%
- Tue89°63°57%
- Wed78°62°74%
- Thu75°59°17%
- Fri70°59°17%
- Sat79°56°17%
- Sun83°58°12%
- Mon85°60°8%
- Tue90°64°10%
- Wed96°65°11%
- Thu88°69°13%
- Fri82°61°20%
- Sat77°58°20%
- Sun87°56°18%
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 — Webster
SPC has placed Webster in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3MRGLMarginal Risk
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 Webster
- 57274