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| REST OF TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
 |  |  |  | |  | | | |  | | |
| Mostly Cloudy | Patchy Fog | Chance of T-Storm | Showers | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Showers | Showers | Chance of Showers | Mostly Cloudy | Mostly Cloudy |
| Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C Lo: 51°FLo: 11°C | Hi: 65°FHi: 18°C Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C Lo: 50°FLo: 10°C | Hi: 61°FHi: 16°C Lo: 50°FLo: 10°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 |
| POP: 100% | POP: 100% | POP: 40% | POP: 70% | POP: 70% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 221 AM CDT Thu Sep 17 2026 
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Issued: 210 AM CDT Thu Sep 17 2026
Key Messages
-Heavy rain is expected beginning this afternoon and continuing through Friday evening. The highest accumulations are expected over eastern and central South Dakota. The probability to see two inches of rain or more reaches 40-60% over eastern 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 today. The heaviest rainfall is expected overnigh...