Weather WorldChester, ID Weather Forecast
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| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  |  | | | | | |  |  | |
| Clearing | Windy | Mostly Clear | Sunny | Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Chance of Rain | Chance of Rain | Mostly Clear |
| Lo: 53°FLo: 12°C | Hi: 74°FHi: 23°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 40°FLo: 4°C | Hi: 72°FHi: 22°C | Hi: 74°FHi: 23°C Lo: 44°FLo: 7°C | Hi: 74°FHi: 23°C Lo: 44°FLo: 7°C | Hi: 74°FHi: 23°C Lo: 44°FLo: 7°C | Lo: 44°FLo: 7°C | Hi: 74°FHi: 23°C | Hi: 76°FHi: 24°C Lo: 45°FLo: 7°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 107 PM MDT Sat Sep 12 2026 
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Issued: 1128 AM MDT Sat Sep 12 2026
Key Messages
- Red Flag Warning in effect this afternoon and evening for Fire Weather Zone 427 (South portion of Sawtooth NF) for low humidity and gusty wind.
- Windy conditions Sunday with strong cooling to temperatures. Wind Advisory may be needed.
- More cooling from Sunday to Monday. Light wind and dry conditions through at least Thursday.
Discussion
... Issued at 155 AM MDT Sat Sep 12 2026
Today through Mon night...Canadian trough continues to move eastward, but the pressure gradient is still strong ...