Caldwell, ID Weather Forecast
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Caldwell Weather Forecast
| TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | MONDAY NIGHT | TUESDAY |
| Mostly Clear | Patchy Fog | Fog | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear |
| Lo: 49°FLo: 9°C | Hi: 78°FHi: 26°C | Lo: 48°FLo: 9°C | Hi: 80°FHi: 27°C | Lo: 52°FLo: 11°C | Hi: 82°FHi: 28°C Lo: 54°FLo: 12°C | Hi: 82°FHi: 28°C Lo: 54°FLo: 12°C | Hi: 84°FHi: 29°C Lo: 54°FLo: 12°C | Hi: 84°FHi: 29°C Lo: 54°FLo: 12°C | Hi: 84°FHi: 29°C Lo: 54°FLo: 12°C | Hi: 81°FHi: 27°C Lo: 54°FLo: 12°C | Hi: 81°FHi: 27°C Lo: 54°FLo: 12°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 230 PM MDT Tue Sep 29 2026 

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Issued: 544 PM MDT Tue Sep 29 2026
Key Messages
- Breezy afternoon winds across the western Snake Plain Wednesday.
- Dry with above normal temperatures warming through this weekend.
Aviation
/00Z Wednesday through Thursday/... Issued 533 PM MDT TUE SEP 29 2026 VFR with SCT-BKN mid-high clouds over mountains of east-central OR and central ID, clear elsewhere. Patchy MVFR-IFR fog near KBKE and KMYL Wednesday morning. Surface winds: W to NW 5-15 kt this evening with gusts around 20-25 kt east of KBOI through around midnight tonight. Winds ...
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