Hermosa, SD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hermosa, a town in Custer County, South Dakota.
This Afternoon
57°F
Sunny
Sunny. High near 57, with temperatures falling to around 51 in the afternoon. North wind 8 to 15 mph, with gusts as high as 29 mph.
7-day forecast for Hermosa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 57°F | Sunny | 8 to 15 mph N | 0% |
| Tonight | 31°F | Mostly Clear | 3 to 7 mph NW | 0% |
| Wednesday | 55°F | Partly Sunny | 3 to 13 mph N | 1% |
| Wednesday Night | 34°F | Mostly Cloudy | 2 to 12 mph NW | 1% |
| Thursday | 58°F | Mostly Sunny | 5 mph S | 0% |
| Thursday Night | 34°F | Partly Cloudy | 5 mph SW | 0% |
| Friday | 57°F | Mostly Sunny | 1 to 8 mph N | 1% |
| Friday Night | 36°F | Mostly Clear | 2 to 8 mph W | 3% |
| Saturday | 62°F | Sunny | 3 to 9 mph NW | 3% |
| Saturday Night | 36°F | Mostly Clear | 7 mph W | 1% |
| Sunday | 69°F | Sunny | 5 to 9 mph SW | 0% |
| Sunday Night | 44°F | Mostly Clear | 8 to 12 mph W | 0% |
| Monday | 63°F | Sunny | 5 to 9 mph N | 0% |
| Monday Night | 39°F | Partly Cloudy | 6 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Hermosa (43.840, -103.191). Updated through the day.
Growing snapshot for Hermosa
Last spring frost
May 12
First fall frost
Oct 1
Growing season
139 days
Hardiness zone
5a
More local growing data for Hermosa: nearby ZIP 57744 weather · frost dates · planting calendar · South Dakota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Rapid City Rgnl Ap, Sd (17.3 mi from Hermosa). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.