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Foster Park, WI Weather Forecast
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Foster Park Weather Forecast
| REST OF TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
 |  |  |  |  | |  |  | | | |  |
| Cloudy | Mostly Cloudy | Clearing | Clear | Sunny | Mostly Clear | Partly Sunny | Partly Cloudy | Partly Sunny | Partly Cloudy | Partly Sunny | Chance of Showers |
| Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 61°FHi: 16°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 45°FLo: 7°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1030 AM CDT Mon Sep 21 2026 
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Issued: 652 AM CDT Mon Sep 21 2026
Key Messages
- A prolonged period of high swim risk conditions continues into early Wednesday evening for all beaches along Lake Michigan.
- Patchy drizzle/sprinkles today into Tuesday may occur in southern and western parts of the area. Below normal temps are expected for the first half of the week, with gradually warming temps into the weekend.
Aviation
... Issued 652 AM CDT Mon Sep 21 2026
There may be patchy drizzle or sprinkles that occur at times in southern and western portions of the area today ...