Cosby, Tennessee Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Cosby weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Partly Cloudy18%—87°72°—
- SundayJul 5Light Rain26%0.06″90°72°+3°
- MondayJul 6T-storm w/ Hail86%0.73″87°70°-3°
- TuesdayJul 7Drizzle46%—84°66°-3°
- WednesdayJul 8Light Drizzle16%—86°66°+2°
- ThursdayJul 9Overcast27%—89°67°+3°
- FridayJul 10Light Showers57%0.32″90°67°+1°
AQI 46 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 7.9 µg/m³ (AQI 44) with a 0.88 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
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 35. Overcast through the UV peak window (cloud cover ~82%) — afternoon ozone should stay flat.
- Present
- AQI 35
- UV peak
- 0.1 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
PM × Wind × Precip
PM2.5 at 7.9 µg/m³ (AQI 44) with a 0.88 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.88
- 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
- 11:48 PM
- Moonset
- 11:45 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Cosby at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: March 22 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 37722
16-Day Forecast — Cosby
- Sat87°72°18%
- Sun90°72°26%
- Mon87°70°86%
- Tue84°66°46%
- Wed86°66°16%
- Thu89°67°27%
- Fri90°67°57%
- Sat81°68°61%
- Sun77°65°47%
- Mon80°64°28%
- Tue85°64°18%
- Wed86°67°55%
- Thu75°66°55%
- Fri82°68°71%
- Sat86°67°75%
- Sun90°70°68%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Cosby
SPC has placed Cosby in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- 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 Cosby
- 37722