Weather Tomorrow in Johnson City, TN
Saturday, September 12, 2026
Thunderstorms
Precip chance
81%
Wind
0-5 mph
Humidity
85%
Feels like
82–70°F
Rain forecast
Rain likely starts around 6 PM and may continue until 3 AM. Peak chance: 81% around 7 PM.
Data source: National Weather Service (NOAA) · Updated 9 min ago
Tomorrow by Hour
68°Temperature trend84°
| Time | Temp | Condition | Rain % | Wind | ||
|---|---|---|---|---|---|---|
| 4 AM☽ | 72°F | Partly Cloudy | 1% | 5 mph SE | ||
| 5 AM☽ | 71°F | Partly Cloudy | 1% | 5 mph SE | ||
| 6 AM☽ | 70°F | Partly Cloudy | 1% | 5 mph SE | ||
| 7 AM☽ | 70°F | Mostly Cloudy | 1% | 5 mph SE | ||
| 8 AM☽ | 69°F | Mostly Cloudy | 2% | 5 mph SE | ||
| 9 AM☽ | 69°F | Mostly Cloudy | 3% | 5 mph SE | ||
| 10 AM | 68°F | Partly Sunny | 4% | 0 mph | ||
| 11 AM | 68°F | Mostly Cloudy | 5% | 0 mph | ||
| 12 PM | 68°F | Slight Chance Rain Showers | 16% | 0 mph | ||
| 1 PM | 70°F | Slight Chance Rain Showers | 15% | 0 mph | ||
| 2 PM | 76°F | Partly Sunny | 8% | 0 mph | ||
| 3 PM | 80°F | Slight Chance Showers And Thunderstorms | 19% | 0 mph | ||
| 4 PM | 84°F | Chance Showers And Thunderstorms | 31% | 0 mph | ||
| 5 PM | 81°F | Chance Showers And Thunderstorms | 37% | 0 mph | ||
| 6 PM | 81°F | Showers And Thunderstorms | 76% | 5 mph SW | ||
| 7 PM | 81°F | Showers And Thunderstorms | 81% | 5 mph SW | ||
| 8 PM | 79°F | Showers And Thunderstorms Likely | 73% | 5 mph SW | ||
| 9 PM | 79°F | Showers And Thunderstorms Likely | 55% | 5 mph S | ||
| 10 PM☽ | 79°F | Chance Showers And Thunderstorms | 46% | 0 mph | ||
| 11 PM☽ | 77°F | Chance Showers And Thunderstorms | 40% | 0 mph | ||
| 12 AM☽ | 75°F | Showers And Thunderstorms Likely | 66% | 0 mph | ||
| 1 AM☽ | 73°F | Showers And Thunderstorms Likely | 66% | 0 mph | ||
| 2 AM☽ | 72°F | Showers And Thunderstorms Likely | 66% | 0 mph | ||
| 3 AM☽ | 71°F | Rain Showers Likely | 66% | 0 mph | ||
Precipitation Timeline
100%
50%
81%
4a10a4p10p
<20%20-50%50-70%>70%
What to Wear Tomorrow
Hot — wear breathable, light clothing
Clothing
- • Light t-shirt or tank top
- • Shorts or light skirt
- • Hat for sun protection
Footwear
Sandals or breathable sneakers
Accessories
- • Umbrella
- • Sunscreen
Conditions
High: 84°F
Low: 68°F
Wind: 0-5 mph
Rain: 81%
Rain expected around 6 PM — carry an umbrella.
Best Time to Be Outside Tomorrow
10 AM – 11 AM
Excellent conditions for outdoor activities (dry, comfortable temp, light wind, daylight)
4a10a4p10p
More for Johnson City, TN
- Will it rain tomorrow in Johnson City?
- What time will it rain tomorrow in Johnson City?
- Weather tomorrow by hour in Johnson City
- Heat index tomorrow by zip code near Johnson City
- Dew point tomorrow by zip code near Johnson City
- Wind chill tomorrow by zip code near Johnson City
- Snow forecast tomorrow by zip code near Johnson City
- What to wear tomorrow in Johnson City
- Best time to be outside tomorrow in Johnson City
Forecast by ZIP in Johnson City
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Frequently Asked Questions
What is the weather forecast for tomorrow in Johnson City, TN?
Tomorrow in Johnson City: High of 84°F, Low of 68°F. Thunderstorms with 81% chance of precipitation. Wind 0-5 mph.
Will it rain tomorrow in Johnson City?
Rain likely starts around 6 PM and may continue until 3 AM. Peak chance: 81% around 7 PM.
What should I wear tomorrow in Johnson City?
With a high of 84°F and low of 68°F, check our "What to Wear" section above for specific clothing recommendations based on temperature, wind, and precipitation.
How accurate is this forecast?
Our forecasts come directly from the National Weather Service (NOAA), which provides some of the most accurate weather predictions available. Tomorrow forecasts are generally 80-90% accurate, with accuracy decreasing the further out you look. Data is refreshed every 30 minutes.