Johnson City, Tennessee Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Johnson City weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast17%—89°68°—
- SundayJul 5Rain30%0.26″93°67°+4°
- MondayJul 6Drizzle71%—87°68°-6°
- TuesdayJul 7Heavy Drizzle48%—85°66°-2°
- WednesdayJul 8Overcast16%—86°62°+1°
- ThursdayJul 9Overcast26%—87°61°+1°
- FridayJul 10Light Drizzle61%—90°63°+3°
AQI 47 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 61 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 61 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
- Present
- AQI 61
- UV peak
- 3.3 at earlier today
- Sky at peak
- partly cloudy
- Projected peak
- AQI 61
PM × Wind × Precip
PM2.5 at 8.3 µg/m³ (AQI 46) with a 0.91 fine-to-coarse ratio and 0 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.91
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:18 PM
- Moonset
- 10:38 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Johnson City at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: March 25 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 37601, 37604, 37614, 37615
16-Day Forecast — Johnson City
- Sat89°68°17%
- Sun93°67°30%
- Mon87°68°71%
- Tue85°66°48%
- Wed86°62°16%
- Thu87°61°26%
- Fri90°63°61%
- Sat82°65°71%
- Sun71°61°50%
- Mon79°56°34%
- Tue83°56°21%
- Wed87°62°40%
- Thu84°64°48%
- Fri87°65°69%
- Sat85°67°65%
- Sun87°65°72%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Johnson City
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Johnson City
SPC has placed Johnson City in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Johnson City
- 37614
- 37615
- 37601
- 37604
- 37602
- 37605
- 37684