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Thunder Hawk Weather Forecast
| REST OF TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
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| 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 | Chance of Showers |
| Hi: 69°FHi: 21°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: 65°FHi: 18°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C |
| POP: 20% | POP: 50% | POP: 70% | POP: 70% | POP: 20% | POP: 20% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 812 AM MDT Fri Sep 18 2026 
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Issued: 1023 AM CDT Fri Sep 18 2026
Key Messages
- Moderate to heavy rains will persist through the morning hours before tapering off west to east by midday through the afternoon. Heaviest swath of rainfall still expected from parts of south central SD into east central and southeast SD.
- An active pattern will persist this weekend into early next week with a 40-70 percent chance of rain Sunday into Monday.
- Temperatures will remain below seasonal normals the next several days before returning to near normal readings the latter half of...