Willow Lake, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Willow Lake weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast16%—84°63°—
- SundayJul 5Clear——88°63°+4°
- MondayJul 6Rain20%0.24″93°69°+5°
- TuesdayJul 7Rain34%0.27″96°69°+3°
- WednesdayJul 8Light Rain50%0.12″77°61°-19°
- ThursdayJul 9Light Drizzle22%0.02″82°57°+5°
- FridayJul 10Light Drizzle20%0.04″90°63°+8°
AQI 55 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 10.8 µg/m³ (AQI 54) with a 0.86 fine-to-coarse ratio and 5 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 31 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 14 around 1 PM.
- Present
- AQI 31
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 14
PM × Wind × Precip
PM2.5 at 10.8 µg/m³ (AQI 54) with a 0.86 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.86
- 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
- 11:33 PM
- Moonset
- 10:32 AM
- In sign
- ♒︎ Aquarius
Cicadas claim the afternoon
Willow Lake at a glance
- Today vs. normal: 66°F — typical for the season
- Last frost: May 14 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57278
15-Day Forecast — Willow Lake
- Sat84°63°16%
- Sun88°63°2%
- Mon93°69°20%
- Tue96°69°34%
- Wed77°61°50%
- Thu82°57°22%
- Fri90°63°20%
- Sat83°64°20%
- Sun93°62°9%
- Mon82°62°9%
- Tue84°56°14%
- Wed93°63°16%
- Thu96°71°12%
- Fri88°66°16%
- Sat96°60°15%
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 — Willow Lake
SPC has placed Willow Lake in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3NONENo severe 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 Willow Lake
- 57278