Interior, SD Weather & Growing Conditions
Today
66°F
Patchy Fog then Slight Chance Showers And Thunderstorms
Patchy fog before 1pm, then a slight chance of showers and thunderstorms. Cloudy, with a high near 66. Northeast wind 8 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 8 to 12 mph NE | 21% |
| Tonight | 52°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 14 mph E | 67% |
| Sunday | 60°F | Rain Showers | 13 to 17 mph E | 84% |
| Sunday Night | 48°F | Showers And Thunderstorms | 13 to 16 mph E | 95% |
| Monday | 63°F | Rain Showers Likely | 12 to 15 mph E | 70% |
| Monday Night | 48°F | Chance Rain Showers then Mostly Cloudy | 16 mph SE | 29% |
| Tuesday | 70°F | Mostly Sunny | 15 to 25 mph SE | 14% |
| Tuesday Night | 54°F | Partly Cloudy | 25 mph SE | 14% |
| Wednesday | 75°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 18 to 23 mph S | 17% |
| Wednesday Night | 55°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 14 to 17 mph S | 32% |
| Thursday | 77°F | Mostly Sunny | 7 to 12 mph S | 11% |
| Thursday Night | 56°F | Partly Cloudy | 9 to 14 mph SE | 8% |
| Friday | 79°F | Mostly Sunny | 12 to 20 mph S | 5% |
| Friday Night | 57°F | Partly Cloudy then Slight Chance Rain Showers | 20 to 25 mph S | 20% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Interior, SD
Last spring frost
May 5
First fall frost
Oct 7
Growing season
152 days
Hardiness zone
5a
Explore more for Interior, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Interior 3 Ne, Sd (10.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.