Lebanon, South Dakota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Lebanon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast——88°61°—
- SundayJul 5Mostly Clear——90°62°+2°
- MondayJul 6Light Showers54%—100°66°+10°
- TuesdayJul 7T-storm w/ Hail72%0.51″95°63°-5°
- WednesdayJul 8Light Showers72%—83°62°-12°
- ThursdayJul 9Heavy Drizzle16%—72°61°-11°
- FridayJul 10Light Drizzle16%—77°60°+5°
AQI 54 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 14.3 µg/m³ (AQI 61) with a 0.80 fine-to-coarse ratio and 6 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 49 now. With UV 7.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 32 around 1 PM.
- Present
- AQI 49
- UV peak
- 7.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 32
PM × Wind × Precip
PM2.5 at 14.3 µg/m³ (AQI 61) with a 0.80 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.80
- 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
- 11:42 PM
- Moonset
- 10:40 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Lebanon at a glance
- Today vs. normal: 16°F above the seasonal normal for this latitude
- Last frost: May 16 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 57455
16-Day Forecast — Lebanon
- Sat88°61°9%
- Sun90°62°1%
- Mon100°66°54%
- Tue95°63°72%
- Wed83°62°72%
- Thu72°61°16%
- Fri77°60°16%
- Sat81°56°15%
- Sun87°60°6%
- Mon87°65°8%
- Tue96°67°12%
- Wed101°70°12%
- Thu91°72°15%
- Fri79°66°16%
- Sat83°59°19%
- Sun88°58°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 — Lebanon
SPC has placed Lebanon in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- 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 Lebanon
- 57455