Heppner, OR Weather Forecast
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Heppner Weather Forecast
| TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
| Chance of Showers | Chance of Showers | Chance of Showers | Mostly Cloudy | Chance of Showers | Chance of T-Storm | Chance of Showers | Partly Cloudy | Partly Cloudy | Mostly Clear | Mostly Clear | Rain Showers |
| Hi: 66°FHi: 19°C | Lo: 46°FLo: 8°C | Hi: 66°FHi: 19°C | Lo: 46°FLo: 8°C | Hi: 66°FHi: 19°C | Lo: 50°FLo: 10°C | Hi: 70°FHi: 21°C | Hi: 79°FHi: 26°C Lo: 50°FLo: 10°C | Hi: 79°FHi: 26°C Lo: 50°FLo: 10°C | Hi: 76°FHi: 24°C Lo: 53°FLo: 12°C | Hi: 76°FHi: 24°C Lo: 53°FLo: 12°C | Hi: 80°FHi: 27°C |
| POP: 20% | POP: 40% | POP: 50% | POP: 50% | POP: 50% | POP: 40% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 402 AM PDT Fri Sep 04 2026 

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Issued: 413 AM PDT Fri Sep 4 2026
Key Messages
- Periodic shower chances (35-75%) across the mountain zones will continue through early next week, with lower chances elsewhere
- Slight chance (15-25%) of isolated afternoon thunderstorms over the mountains through Monday
- Below normal temperatures will continue through early next week, with near normal temperatures returning mid week
Discussion
... Water vapor imagery tonight shows an upper level closed low over the PacNW, with the center of the low poised to move inland along the centra...
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