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Lake Forest Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
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| Showers | Rain/Snow Showers | Rain/Snow Showers | Rain/Snow Showers | Rain/Snow Showers | Rain/Snow Showers | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Clearing | Clear |
| Hi: 49°FHi: 9°C | Lo: 35°FLo: 2°C | Hi: 41°FHi: 5°C | Lo: 35°FLo: 2°C | Hi: 41°FHi: 5°C | Lo: 35°FLo: 2°C | Hi: 45°FHi: 7°C | Lo: 35°FLo: 2°C | Hi: 49°FHi: 9°C | Lo: 29°FLo: -2°C | Hi: 49°FHi: 9°C | Lo: 29°FLo: -2°C |
| POP: 100% | POP: 50% | POP: 50% | POP: 100% | POP: 100% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 617 AM EST Thu Nov 12 2026 
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Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 658 AM EST Thu Nov 12 2026
Key Messages
1) After rain exits to the east through this morning, another round of widespread showers is likely this afternoon/evening.
2) Lake effect showers take over tonight into the weekend as western portions of the area dry out. Snow will mix in at times late tonight through Saturday, especially away inland. Localized snow accumulations are possible Friday night into Saturday.
3) Dry weather and slowly warming up into next week.
Discussion
... KEY MESSAGE 1... A compact area of low pressure is...