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| REST OF TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
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| Chance of T-Storm | Chance of Showers | Cloudy | Cloudy | Chance of Showers | Chance of Showers | Showers | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Chance of T-Storm | Chance of T-Storm |
| Lo: 60°FLo: 16°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 61°FHi: 16°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C |
| POP: 100% | POP: 50% | POP: 50% | POP: 70% | POP: 90% | POP: 40% | POP: 30% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 221 AM CDT Fri Sep 18 2026 
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Issued: 1224 AM CDT Fri Sep 18 2026
Key Messages
- Heavy rain is expected beginning this evening over and continuing through Friday evening. The highest accumulations are expected over south central and eastern South Dakota. The probability to see two inches of rain or more reaches 40-60% over east central and south central South Dakota (decreasing elsewhere as you move north and west).
- There is a Slight Risk (level 2 of 4) for excessive rainfall leading to flooding across across the forecast area tonight into Friday. The heaviest ra...