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Cosby, MO Weather Forecast
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| THIS AFTERNOON | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY |
 |  |  |  |  |  | |  |  | | | |
| Sunny | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy |
| Hi: 90°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 75°FHi: 24°C | Lo: 61°FLo: 16°C | Hi: 69°FHi: 21°C | Hi: 65°FHi: 18°C Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C Lo: 55°FLo: 13°C | Lo: 50°FLo: 10°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C |
| POP: 20% | POP: 70% | POP: 50% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 PM CDT Fri Sep 18 2026 
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Instant definitions for any meteorological term.
Issued: 414 PM CDT Fri Sep 18 2026
Key Messages
- Chance for showers/storms across northwestern MO overnight into tomorrow morning (30-45%). Some storms could be strong, but are expected to remain subsevere.
- Another round of showers/storms likely (60-75%) tomorrow evening into Sunday morning. Primary hazards include heavy rainfall and severe hail/winds.
- Temperatures cooling going into early next week.
Discussion
... Issued at 412 PM CDT Fri Sep 18 2026
Earlier fog over northern Missouri has eroded away this afternoon, with temperatures...