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City of Winchester, IDWinchester, ID Weather Forecast
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Winchester Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  | | |  | | |  |  |  | |
| Partly Cloudy | Mostly Sunny | Mostly Cloudy | Mostly Sunny | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Chance of Showers | Rain Showers | Chance of Showers |
| Lo: 40°FLo: 4°C | Hi: 69°FHi: 21°C | Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 60°FHi: 16°C Lo: 40°FLo: 4°C | Hi: 60°FHi: 16°C Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C Lo: 40°FLo: 4°C | Hi: 65°FHi: 18°C | Lo: 43°FLo: 6°C | Hi: 50°FHi: 10°C |
| POP: 40% | POP: 70% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 410 PM PDT Sat Oct 17 2026 
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Issued: 517 PM PDT Sat Oct 17 2026
Key Messages
- Cold temperatures with frost expected across much of the region for Sunday morning.
- Dry weather continues through at least the middle of next week with mild afternoon temperatures
- Cooler weather with increased precipitation chances arrive late next week.
Discussion
... Tonight: Wind will decline and skies will be variably cloudy, clearing overnight into early Sunday, as a cold front drives eastward and drier air slides in. Winds will decline to around 10-15 mph with gusts of 15-25 mph ...