Shannon County, SD Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Shannon County Weather Forecast
| THIS AFTERNOON | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
| Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Clear | Sunny | Partly Cloudy | Clearing | Clear | Sunny | Mostly Clear |
| Hi: 79°FHi: 26°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Lo: 51°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1232 PM MDT Fri Oct 02 2026 

Shannon County Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Shannon County Weather Map
Shannon County Quick Facts
Shannon County Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 152 PM MDT Fri Oct 2 2026
Key Messages
- Breezy through the weekend.
- Near or above normal temperatures through the forecast period.
- Mostly dry conditions expected over the next week.
Discussion
...(This Evening Through Friday) Issued at 142 PM MDT Fri Oct 2 2026
Current Water Vapor and upper air models show west-northwest flow aloft, as upper ridge has built over the western CONUS, with the upper high located over the four corners region. 19Z surface analysis shows a frontal boundary running north/south through eastern Wyoming...
Weather World