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Clark County Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY |
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| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Rain | Mostly Clear | Mostly Clear | Sunny | Mostly Clear | Mostly Clear | Mostly Clear |
| Hi: 71°FHi: 22°C | Lo: 47°FLo: 8°C | Hi: 67°FHi: 19°C | Lo: 44°FLo: 7°C | Hi: 63°FHi: 17°C | Lo: 42°FLo: 6°C | Hi: 68°FHi: 20°C Lo: 42°FLo: 6°C | Hi: 68°FHi: 20°C Lo: 42°FLo: 6°C | Hi: 72°FHi: 22°C | Hi: 72°FHi: 22°C Lo: 44°FLo: 7°C | Hi: 72°FHi: 22°C Lo: 44°FLo: 7°C | Hi: 72°FHi: 22°C Lo: 44°FLo: 7°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 1231 AM MDT Thu Sep 17 2026 
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Issued: 104 AM MDT Thu Sep 17 2026
Key Messages
-Occasional showers and thunderstorms through Saturday
-Heavier precipitation expected across the eastern highlands into Lemhi County and southwest Montana
-Cooler temperatures starting Friday
Discussion
... Issued at 103 AM MDT Thu Sep 17 2026
A low pressure system over Oregon will produce showers and storms over our area into the weekend. This system has tapped into monsoon moisture and lifted it northward. We are seeing showers and storms move north out of Utah and into central and eas...