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Barnesville Reservoir Number Three, OH Weather Forecast
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Barnesville Reservoir Number Three Weather Forecast
| OVERNIGHT | TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
 |  |  |  |  |  | | |  | |  | |
| Mostly Cloudy | Partly Sunny | Partly Cloudy | Chance of T-Storm | Clear | Mostly Sunny | Clear | Mostly Sunny | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Mostly Sunny |
| Lo: 70°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 90°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 71°FLo: 22°C | Hi: 90°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C |
| POP: 20% | POP: 40% | POP: 40% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 223 AM EDT Mon Aug 31 2026 
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Issued: 203 AM EDT Mon Aug 31 2026
Key Messages
1) Scattered showers this morning, with isolated showers/thunderstorms this afternoon.
2) Additional shower and thunderstorm chances at times through late week, with some possibility for severe storms.
3) Heat and humidity build through mid week
Discussion
... KEY MESSAGE 1... Scattered showers, more numerous north of Pittsburgh, are expected this morning, initially in warm advection along a surface boundary across northern Ohio into NW PA. Mesoanalysis and water vapor satellite imagery ...