Isabel, SD Weather & Growing Conditions
Today
75°F
Areas Of Smoke then Sunny
Areas of smoke before noon. Sunny, with a high near 75. Northwest wind 8 to 12 mph, with gusts as high as 24 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Areas Of Smoke then Sunny | 8 to 12 mph NW | 1% |
| Tonight | 51°F | Mostly Clear | 3 to 8 mph SW | 1% |
| Wednesday | 83°F | Sunny | 5 to 8 mph W | 0% |
| Wednesday Night | 57°F | Partly Cloudy | 8 mph S | 1% |
| Thursday | 91°F | Sunny | 7 to 10 mph W | 0% |
| Thursday Night | 59°F | Mostly Clear | 6 to 9 mph E | 0% |
| Friday | 92°F | Sunny | 8 to 13 mph N | 0% |
| Friday Night | 61°F | Mostly Clear | 13 mph SE | 0% |
| Saturday | 95°F | Sunny | 15 mph NE | 1% |
| Saturday Night | 60°F | Mostly Clear | 10 to 14 mph NE | 2% |
| Sunday | 91°F | Mostly Sunny | 10 to 18 mph E | 10% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 13 to 18 mph E | 31% |
| Monday | 88°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 14 to 17 mph E | 16% |
| Monday Night | 61°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 13 to 17 mph E | 32% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Isabel, SD
Last spring frost
May 11
First fall frost
Sep 30
Growing season
140 days
Hardiness zone
4b
Explore more for Isabel, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Glad Valley 2 W, Sd (13.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.