Preston, ID Weather Forecast
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Preston Weather Forecast
| TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | SATURDAY |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Cloudy | Chance of Rain |
| Hi: 86°FHi: 30°C | Lo: 59°FLo: 15°C | Hi: 86°FHi: 30°C | Lo: 58°FLo: 14°C | Hi: 87°FHi: 31°C | Lo: 59°FLo: 15°C | Hi: 88°FHi: 31°C Lo: 60°FLo: 16°C | Hi: 88°FHi: 31°C Lo: 60°FLo: 16°C | Hi: 86°FHi: 30°C Lo: 59°FLo: 15°C | Hi: 86°FHi: 30°C Lo: 59°FLo: 15°C | Hi: 83°FHi: 28°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 142 AM MDT Sun Aug 23 2026 

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Preston Forecast Discussion
Issued: 206 AM MDT Sun Aug 23 2026
Key Messages
- Storm Prediction Center has areas of marginal chance and slight chance of severe thunderstorms for today and tonight.
- Thunderstorms have less chance of occurrence, but greater severity potential today.
- Breezy conditions in the central Idaho mountains and Snake River plain today, even outside thunderstorm activity.
Discussion
... Issued at 138 AM MDT Sun Aug 23 2026
Southwest upper level flow will continue to bring moist and unstable air into the forecast area. SPC now has an area along ...
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