Shamrock Colony, South Dakota Weather
Great rains sometimes fall. Day 43 of summer. Read this microseason across nine climate regions →
Shamrock Colony weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayAug 2Overcast——87°64°—
- MondayAug 3Overcast62%—89°68°+2°
- TuesdayAug 4Heavy Rain62%0.37″80°58°-9°
- WednesdayAug 5Overcast——82°58°+2°
- ThursdayAug 6Overcast——96°61°+14°
- FridayAug 7Clear——104°71°+8°
- SaturdayAug 8Overcast——113°74°+9°
AQI 23 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 PM.
What's driving it
PM × Wind × Precip
PM2.5 at 4.8 µg/m³, PM10 at 4.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.98
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
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).
Red sky at night, sailor's delight.
- Moonrise
- 10:17 PM
- Moonset
- 10:39 AM
- In sign
- ♓︎ Pisces
Great rains sometimes fall
Shamrock Colony at a glance
- Today vs. normal: 16°F above the seasonal normal for this latitude
- Last frost: May 14 (climatological average for this latitude)
- Microseason: Aug 1–5
- Planting window: Sow fall peas. Start kale and collard seedlings for fall.
16-Day Forecast — Shamrock Colony
- Sun87°64°0%
- Mon89°68°62%
- Tue80°58°62%
- Wed82°58°1%
- Thu96°61°3%
- Fri104°71°4%
- Sat113°74°7%
- Sun92°68°10%
- Mon92°65°15%
- Tue92°67°17%
- Wed93°67°18%
- Thu85°69°21%
- Fri89°66°24%
- Sat89°55°23%
- Sun82°62°23%
- Mon94°64°19%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of August 2, 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 — Shamrock Colony
SPC has placed Shamrock Colony in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWMRGLMarginal 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.
Sun & seasons in Shamrock Colony
Shamrock Colony sits in Beadle County, where the year’s longest day runs 15h 34m of daylight and its shortest just 8h 49m — a swing of +6h 45m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Sioux Falls, the state’s largest city, lies about 96 miles to the SE. The nearest town Shamrock Colony tracks is Spring Valley Colony, roughly 61 miles to the SW.
ZIP codes in Shamrock Colony
- 57322