Jacksonville Reservoir, OR Weather Forecast
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Jacksonville Reservoir Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | MONDAY | MONDAY NIGHT | TUESDAY |
| Partly Cloudy | Partly Cloudy | Sunny | Mostly Clear | Sunny | Clear | Sunny | Clear | Clear | Mostly Clear | Mostly Clear | Partly Cloudy |
| Hi: 90°FHi: 32°C | Lo: 53°FLo: 12°C | Lo: 53°FLo: 12°C | Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C | Hi: 86°FHi: 30°C Lo: 50°FLo: 10°C | Hi: 86°FHi: 30°C Lo: 50°FLo: 10°C | Hi: 83°FHi: 28°C Lo: 53°FLo: 12°C | Hi: 83°FHi: 28°C Lo: 53°FLo: 12°C | Hi: 76°FHi: 24°C | ||
POP = Probability of Precipitation.
Weather Outlook Updated: 239 AM PDT Wed Aug 26 2026 

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Issued: 254 AM PDT Wed Aug 26 2026
Key Messages
- Temperatures trend cooler today, trending cooler through the week into the weekend.
- Weather pattern largely influenced by upper level troughing, resulting in gusty winds in the afternoons/evenings.
- Heightened fire weather concerns across the East Side through Thursday due to gusty winds and low RH.
Discussion
...Southwest flow persists over the region today with persistent high pressure over the the Desert Southwest and low pressure offshore. This low pressure will gradually move inlan...
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