Weather WorldSisters Mirror Lake, OR Weather Forecast
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Sisters Mirror Lake Weather Forecast
| REST OF TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | TUESDAY | WEDNESDAY | THURSDAY |
 | | |  |  | | |  | | | |
| Smoke | Smoke | Smoke | Sunny | Mostly Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Lo: 60°FLo: 16°C | Lo: 59°FLo: 15°C | Lo: 49°FLo: 9°C | ||||||||
POP = Probability of Precipitation.
Weather Outlook Updated: 537 PM PDT Thu Aug 20 2026 
Sisters Mirror Lake Radar Loop
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Sisters Mirror Lake Forecast Discussion
Issued: 350 PM PDT Thu Aug 20 2026
Key Messages
- Hot temperatures through Friday -- Heat Advisories in effect.
- Very low to slight chance (5-20 percent) of high-based showers and thunderstorms Friday and Saturday.
- Widespread breezy to windy westerly winds coupled with low relative humidity Saturday -- Fire Weather Watches in effect.
Discussion
... Water vapor imagery shows a large, closed low offshore in the Pacific. Meanwhile, an upper-level ridge of high pressure extends from the Four Corners into the P...