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Harpster Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
 |  | |  |  | |  |  | | | | |
| Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Mostly Sunny | Partly Cloudy | Partly Cloudy | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Showers Likely |
| Hi: 80°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C |
| POP: 70% | POP: 40% | POP: 20% | POP: 50% | POP: 50% | POP: 50% | POP: 60% | POP: 60% |
POP = Probability of Precipitation.
Weather Outlook Updated: 717 AM EDT Sat Sep 12 2026 
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Issued: 739 AM EDT Sat Sep 12 2026
Key Messages
1) Shower and thunderstorm activity is expected today and again on Sunday. Some storms may reach strong to severe limits and may bring locally heavy rainfall.
2) Warm, unsettled weather will return to the area on Tuesday night through Thursday with additional showers and storms.
Discussion
... KEY MESSAGE 1... Convective activity is moving through the lower Ohio Valley early this morning and will continue to lift north today with a warm front and increasing moisture across the region. T...