Cavour, SD Weather & Growing Conditions
Overnight
35°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 35, with temperatures rising to around 39 overnight. Northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 35°F | Chance Rain Showers | 15 to 20 mph NW | 52% |
| Wednesday | 46°F | Rain Showers | 15 to 20 mph NW | 76% |
| Wednesday Night | 33°F | Slight Chance Rain Showers then Mostly Cloudy | 15 mph NNW | 16% |
| Thursday | 44°F | Mostly Cloudy | 10 to 15 mph N | 0% |
| Thursday Night | 27°F | Mostly Cloudy | 0 to 10 mph ENE | 0% |
| Friday | 45°F | Mostly Sunny | 0 to 5 mph SE | 0% |
| Friday Night | 27°F | Partly Cloudy | 5 mph SSE | 0% |
| Saturday | 55°F | Sunny | 5 to 10 mph SSW | 0% |
| Saturday Night | 32°F | Mostly Clear | 5 mph W | 0% |
| Sunday | 56°F | Sunny | 5 to 10 mph SSW | 0% |
| Sunday Night | 36°F | Mostly Clear | 5 to 10 mph S | 0% |
| Monday | 60°F | Sunny | 5 to 10 mph WNW | 0% |
| Monday Night | 34°F | Mostly Clear | 5 mph NW | 0% |
| Tuesday | 57°F | Mostly Sunny | 5 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cavour, SD
Last spring frost
May 6
First fall frost
Oct 2
Growing season
146 days
Hardiness zone
4b
Explore more for Cavour, SD: full frost dates · planting calendar · South Dakota frost dates
Climate data from the nearest NOAA station, Huron Rgnl Ap, Sd (11 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.