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City of Johnson City, TNJohnson City, TN Weather Forecast
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| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
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| Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Clear | Sunny | Clear | Sunny | Clear | Sunny | Clear |
| Hi: 70°FHi: 21°C | Lo: 40°FLo: 4°C | Hi: 71°FHi: 22°C | Lo: 40°FLo: 4°C | Hi: 71°FHi: 22°C | Lo: 41°FLo: 5°C | Hi: 70°FHi: 21°C | Lo: 40°FLo: 4°C | Hi: 73°FHi: 23°C | Lo: 41°FLo: 5°C | Hi: 70°FHi: 21°C | Lo: 40°FLo: 4°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 706 AM EDT Mon Oct 19 2026 
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Issued: 724 AM EDT Mon Oct 19 2026
Key Messages
Updated at 721 AM EDT Mon Oct 19 2026- Chilly starts to the day with some patchy frost possible over the next couple of mornings.
- Dry weather dominates the rest of this week with a warming trend. Humidity remains on the lower side.
Discussion
... Issued at 136 AM EDT Mon Oct 19 2026
Another chilly morning this morning, but with slight improvement in readings by a couple of degrees or so. Dry air and calm conditions will allow areas of frost for parts of the mountains, plateau, and northe...