Hermosa, SD Weather & Growing Conditions
Today
72°F
Areas Of Smoke then Mostly Sunny
Areas of smoke before noon. Mostly sunny, with a high near 72. South wind 2 to 9 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Areas Of Smoke then Mostly Sunny | 2 to 9 mph S | 9% |
| Tonight | 53°F | Partly Cloudy then Slight Chance Rain Showers | 3 to 10 mph SW | 17% |
| Wednesday | 83°F | Sunny | 5 to 10 mph S | 3% |
| Wednesday Night | 57°F | Mostly Clear | 6 to 10 mph S | 2% |
| Thursday | 93°F | Sunny | 6 to 10 mph SE | 2% |
| Thursday Night | 61°F | Clear | 6 to 10 mph NW | 0% |
| Friday | 97°F | Sunny | 5 to 13 mph NE | 1% |
| Friday Night | 64°F | Mostly Clear | 5 to 13 mph S | 2% |
| Saturday | 99°F | Sunny | 8 to 16 mph N | 1% |
| Saturday Night | 64°F | Mostly Clear | 6 to 16 mph N | 2% |
| Sunday | 97°F | Mostly Sunny | 6 to 16 mph NE | 7% |
| Sunday Night | 64°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 to 17 mph NE | 16% |
| Monday | 93°F | Mostly Sunny | 8 to 17 mph NE | 13% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 7 to 17 mph NE | 35% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hermosa, SD
Last spring frost
May 12
First fall frost
Oct 1
Growing season
139 days
Hardiness zone
5a
Explore more for Hermosa, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Rapid City Rgnl Ap, Sd (17.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.