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Osterville Weather Forecast
| THIS AFTERNOON | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 |  |  |  |  |  | | | |  | | |
| Mostly Sunny | Partly Cloudy | Partly Sunny | Mostly Cloudy | Chance of Showers | Chance of Showers | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy |
| Hi: 75°FHi: 24°C | Lo: 60°FLo: 16°C | Hi: 75°FHi: 24°C | Lo: 70°FLo: 21°C | Hi: 80°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C Lo: 61°FLo: 16°C | Hi: 75°FHi: 24°C Lo: 61°FLo: 16°C |
| POP: 40% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1003 AM EDT Tue Sep 08 2026 
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Issued: 736 AM EDT Tue Sep 8 2026
Key Messages
- Mainly Dry/pleasant today and Wed. Highs in the upper 70s to the lower 80s both days...albeit a bit more humid Wed.
- Breezy, warm and humid Wed night into Thu with brief scattered showers possible...but the vast majority of this time will be dry.
- Mainly dry/pleasant with lower humidity Fri into Sat with highs mainly in the 70s. Turning a bit more humid/warmer Sun into Mon.
Discussion
... KEY MESSAGE 1...Mainly Dry/pleasant today and Wed. Highs in the upper 70s to the lower 80s both days...