Weather WorldPennington County, SD Weather Forecast
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Pennington County Weather Forecast
| EARLY THIS MORNING | TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | COLUMBUS DAY | MONDAY NIGHT | TUESDAY |
 |  |  | |  | | |  |  |  | |  |
| Partly Cloudy | Mostly Sunny | Partly Cloudy | Sunny | Mostly Clear | Sunny | Partly Cloudy | Mostly Cloudy | Chance of Rain | Chance of Rain | Chance of Rain | Chance of Rain |
| Lo: 45°FLo: 7°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 91°FHi: 33°C | Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 49°FLo: 9°C | Hi: 59°FHi: 15°C | Lo: 39°FLo: 4°C | Hi: 55°FHi: 13°C | Lo: 35°FLo: 2°C | Hi: 60°FHi: 16°C |
| POP: 70% | POP: 70% | POP: 30% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 257 AM MDT Thu Oct 08 2026 
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Issued: 1022 PM MDT Wed Oct 7 2026
Key Messages
- Above normal high temperatures continue through the week.
- Elevated to near-critical fire weather conditions, especially Friday and Saturday.
- Pattern Changes early next week, resulting in much cooler temperatures and chances for precipitation.
Discussion
...(This Evening Through Wednesday) Issued at 120 PM MDT Wed Oct 7 2026
Current Water Vapor and upper air models show northwest flow over the region, as broad upper ridge continues to sit over the west coast, and upper trough over the Gr...