Weather WorldLake Forest, MO Weather Forecast
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Lake Forest Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
 |  |  |  |  |  | |  |  | | | |
| Mostly Cloudy | Mostly Cloudy | Chance of T-Storm | Chance of Showers | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Clear | Clear | Mostly Clear | Mostly Clear |
| Lo: 71°FLo: 22°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C Lo: 50°FLo: 10°C | Hi: 71°FHi: 22°C Lo: 50°FLo: 10°C |
| POP: 90% | POP: 80% |
POP = Probability of Precipitation.
Weather Outlook Updated: 913 PM CDT Wed Sep 30 2026 
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Issued: 652 PM CDT Wed Sep 30 2026
Key Messages
- Widespread rain will overtake the region early tomorrow morning and last through Friday morning. One to two inches of rain are expected where rain is heaviest with locally heavier amounts possible.
- There is a medium chance of minor flooding on the Mississippi River and northeast Missouri tributaries next week due to upstream heavy rain.
- Near record highs will continue through tomorrow. A cold front will then drop temperatures into the 70s for highs and 40s and 50s for low for the for...