Johnson County, TN Weather Forecast
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Johnson County Weather Forecast
| REST OF TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
| Sunny | Mostly Clear | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of T-Storm | Partly Cloudy | Chance of T-Storm | Partly Cloudy |
| Hi: 76°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 76°FHi: 24°C | Lo: 60°FLo: 16°C | Hi: 76°FHi: 24°C | Lo: 60°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 63°FLo: 17°C |
| POP: 40% | POP: 70% | POP: 30% | POP: 80% | POP: 20% | POP: 50% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 228 PM EDT Tue Aug 25 2026 

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Issued: 212 PM EDT Tue Aug 25 2026
Key Messages
Updated at 141 PM EDT Tue Aug 25 2026- Dry conditions with comfortable afternoon humidity levels continues this afternoon, and most locations will be dry Wednesday as well.
- Highest chances for showers and storms will be Thursday and Friday.
- Most locations should be dry for the weekend, but we will see a trend toward hotter conditions that will continue into the first part of the week.
Discussion
... Issued at 141 PM EDT Tue Aug 25 2026
The surface high pressure to our north that has been...
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