Foster, WI Weather Forecast
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Foster Weather Forecast
| OVERNIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | SATURDAY |
| Clearing | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Sunny |
| Lo: 49°FLo: 9°C | Hi: 65°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1052 PM CDT Sat Oct 03 2026 

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Issued: 1250 AM CDT Sun Oct 4 2026
Key Messages
- Light rain shower chances (20-70%) increase this afternoon into early this evening with the highest chances north of I-94. Rain amounts under 0.25" are expected.
- Temperatures may drop low enough to form frost across central to north-central Wisconsin on Sunday night into Monday morning.
- Near to slightly above normal temperatures into next week with highs in the 60s and 70s.
Discussion
... Issued at 1233 PM CDT Sat Oct 3 2026
This afternoon through tonight: Light Rain Showers
A quick movi...
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