Weather World20 Reservoir, WI Weather Forecast
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20 Reservoir Weather Forecast
| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  |  |  |  | |  | | | |  | |
| Partly Cloudy | Partly Sunny | Clouds | Mostly Sunny | Showers Likely | Partly Sunny | Chance of T-Storm | Mostly Sunny | Chance of T-Storm | Mostly Sunny | Mostly Clear | Mostly Sunny |
| Lo: 71°FLo: 22°C | Hi: 90°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C |
| POP: 60% | POP: 40% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 853 PM CDT Sun Aug 30 2026 
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Issued: 1216 AM CDT Mon Aug 31 2026
Key Messages
- Mainly dry through Tuesday, then best chance of showers/thunderstorms comes late Tuesday night, followed by little- to-no chances for additional rain through the rest of the week.
- Hot/humid conditions to persist through Monday, then warm and less humid conditions through the rest of the week.
Discussion
... Issued at 331 PM CDT Sun Aug 30 2026
A fairly well-developed low pressure system will be imminently moving across the area through tonight, its west-to-east warm front bisecting MN/W...