Hosmer, SD Weather & Growing Conditions
Tonight
54°F
Areas Of Fog
Areas of fog. Cloudy, with a low around 54. Northeast wind 9 to 14 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Areas Of Fog | 9 to 14 mph NE | 6% |
| Saturday | 66°F | Areas Of Fog | 10 to 14 mph NE | 3% |
| Saturday Night | 52°F | Cloudy | 12 to 15 mph NE | 14% |
| Sunday | 63°F | Cloudy then Chance Rain Showers | 17 mph ENE | 38% |
| Sunday Night | 50°F | Chance Rain Showers | 9 to 14 mph E | 48% |
| Monday | 63°F | Chance Rain Showers then Mostly Cloudy | 13 mph E | 39% |
| Monday Night | 47°F | Mostly Cloudy | 12 mph ESE | 7% |
| Tuesday | 65°F | Partly Sunny | 12 to 20 mph SE | 3% |
| Tuesday Night | 51°F | Mostly Cloudy then Slight Chance Rain Showers | 18 mph SE | 19% |
| Wednesday | 69°F | Slight Chance Rain Showers | 21 mph SSE | 19% |
| Wednesday Night | 53°F | Chance Rain Showers | 12 to 18 mph SSE | 29% |
| Thursday | 71°F | Chance Rain Showers then Mostly Sunny | 13 mph SE | 29% |
| Thursday Night | 54°F | Partly Cloudy | 12 mph SE | 10% |
| Friday | 71°F | Partly Sunny | 10 to 18 mph SE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hosmer, SD
Last spring frost
May 7
First fall frost
Oct 3
Growing season
148 days
Hardiness zone
4b
Explore more for Hosmer, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Roscoe, Sd (12 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.