Jonathan, ID Weather Forecast
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| TONIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
| Isolated Showers | Partly Sunny | Thunderstorms | Chance of Showers | Fog | Patchy Fog | Patchy Fog | Mostly Sunny | Patchy Fog | Patchy Fog | Chance of Showers | Chance of Showers |
| Lo: 52°FLo: 11°C | Hi: 76°FHi: 24°C | Lo: 50°FLo: 10°C | Hi: 69°FHi: 21°C | Lo: 46°FLo: 8°C | Hi: 75°FHi: 24°C Lo: 50°FLo: 10°C | Hi: 75°FHi: 24°C Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C | Hi: 83°FHi: 28°C Lo: 55°FLo: 13°C | Hi: 83°FHi: 28°C Lo: 55°FLo: 13°C | Hi: 82°FHi: 28°C Lo: 56°FLo: 13°C | Hi: 82°FHi: 28°C Lo: 56°FLo: 13°C |
| POP: 20% | POP: 60% | POP: 30% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 230 PM MDT Sat Sep 05 2026 

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Issued: 228 PM MDT Sat Sep 5 2026
Key Messages
- Slightly warmer today but still cooler than normal.
- Widespread showers and isolated thunderstorms late Sunday through Monday.
- Cooler Monday, then warming through Friday.
Aviation
/18Z Saturday through Sunday/... Issued 1155 AM MDT SAT SEP 5 2026 Valley fog/stratus mostly cleared up by now. Isolated showers and thunderstorms this afternoon in eastern Oregon and the central ID mountains. Surface winds: becoming NW 5-15 kt this afternoon. Winds aloft at 10kft MSL: S 10-20 kt.
KBOI...VFR wi...
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