Lemmon, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Lemmon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——86°57°—
- SundayJul 5Overcast——94°62°+8°
- MondayJul 6Overcast36%—92°69°-2°
- TuesdayJul 7Thunderstorm69%0.02″80°65°-12°
- WednesdayJul 8Heavy Drizzle69%0.01″80°60°0°
- ThursdayJul 9Light Showers22%—84°63°+4°
- FridayJul 10Clear22%—78°58°-6°
AQI 42 (Good), driven by PM2.5. AQI up 8 over the last 6 hours (gradual rise). PM2.5 at 18.3 µg/m³ (AQI 68) with a 0.81 fine-to-coarse ratio and 2 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 47 now. With UV 7.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 49 around 1 PM.
- Present
- AQI 47
- UV peak
- 7.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 49
PM × Wind × Precip
PM2.5 at 18.3 µg/m³ (AQI 68) with a 0.81 fine-to-coarse ratio and 2 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
- 10:53 PM
- Moonset
- 9:50 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Lemmon at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: May 22 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57638
16-Day Forecast — Lemmon
- Sat86°57°5%
- Sun94°62°2%
- Mon92°69°36%
- Tue80°65°69%
- Wed80°60°69%
- Thu84°63°22%
- Fri78°58°22%
- Sat83°54°15%
- Sun91°63°4%
- Mon94°67°6%
- Tue103°69°12%
- Wed108°72°24%
- Thu89°66°26%
- Fri75°62°19%
- Sat86°56°18%
- Sun90°60°23%
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 — Lemmon
SPC has placed Lemmon in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- 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 Lemmon
- 57638