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Winter Lake, MO Weather Forecast
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Winter Lake Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
 |  |  |  |  | | | | | |  |  |
| Chance of T-Storm | Chance of T-Storm | Thunderstorms | Sunny | Partly Cloudy | Mostly Clear | Mostly Clear | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers |
| Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C | Hi: 95°FHi: 35°C Lo: 71°FLo: 22°C | Lo: 70°FLo: 21°C | Hi: 90°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C |
| POP: 50% | POP: 40% | POP: 30% | POP: 20% | POP: 40% | POP: 40% | POP: 50% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 248 PM CDT Tue Sep 15 2026 
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Instant definitions for any meteorological term.
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Issued: 241 PM CDT Tue Sep 15 2026
Key Messages
- A late season heat wave with peak heat index values of 100-105F+ will continue through at least Friday along/south of I-70.
- Widespread showers and thunderstorms are forecast tonight, mainly across northeast Missouri and west-central Illinois where locally heavy rainfall is possible. A few may also be strong to severe with damaging winds the main threat through this evening.
Aviation
/18Z TAFS THROUGH 00Z THURSDAY/... Issued at 1211 PM CDT Tue Sep 15 2026
A cold front will slowly move so...