Weather WorldBoise County, ID Weather Forecast
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Boise County Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
 |  | | |  |  | |  |  | | | |
| Mostly Clear | Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Clouds | Chance of Showers | Mostly Sunny | Mostly Clear | Mostly Clear |
| Lo: 47°FLo: 8°C | Hi: 82°FHi: 28°C | Lo: 53°FLo: 12°C | Hi: 74°FHi: 23°C | Lo: 40°FLo: 4°C | Hi: 64°FHi: 18°C Lo: 42°FLo: 6°C | Hi: 64°FHi: 18°C Lo: 42°FLo: 6°C | Hi: 65°FHi: 18°C | Lo: 39°FLo: 4°C | Hi: 61°FHi: 16°C | Hi: 65°FHi: 18°C Lo: 36°FLo: 2°C | Hi: 65°FHi: 18°C Lo: 36°FLo: 2°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 230 PM MDT Wed Sep 23 2026 
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Issued: 617 PM MDT Wed Sep 23 2026
Key Messages
- Hot afternoon expected temperatures on Thursday with temps 10 to 15 degrees above normal.
- Winds increasing across southern Oregon and Idaho on Thursday afternoon ahead of cold front.
- Cold front passage Friday with cooler temperatures heading into this weekend and a 20 percent chance of precipitation across northern portions of the forecast area Friday.
- Cooler conditions continue beginning on Saturday and continuing through early next week.
Aviation
/00Z Thursday through Friday/... Issu...