Old Washington, OH Weather Forecast
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| REST OF TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY |
| Clear | Sunny | Clear | Clearing | Clear | Mostly Sunny | Clear | Mostly Sunny | Clear | Mostly Sunny | Clear | Partly Cloudy |
| Lo: 41°FLo: 5°C | Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 70°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 50°FLo: 10°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 802 PM EDT Thu Sep 24 2026 

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Issued: 724 PM EDT Thu Sep 24 2026
Key Messages
1) Below-normal temperature lingers thru Friday and moderates by the weekend. Frost Advisory issued for tonight into Friday morning.
2) Trends continue away from local precipitation influenced by coastal low pressure. Next best chance for rain will be Tuesday/Wednesday of next week.
Discussion
... KEY MESSAGE 1...
Amid strengthening surface high pressure, dry conditions and below- normal temperatures will be likely thru the weekend. Tonight, will feature the coldest temperature with valu...
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