Decatur, Tennessee Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Decatur weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Light Showers59%0.11″88°71°—
- MondayJul 6Overcast44%—86°70°-2°
- TuesdayJul 7Light Drizzle33%—90°71°+4°
- WednesdayJul 8Drizzle22%—92°69°+2°
- ThursdayJul 9Drizzle14%—92°68°0°
- FridayJul 10Drizzle34%—87°69°-5°
- SaturdayJul 11Drizzle57%0.01″91°70°+4°
AQI 47 (Good), driven by Ozone. AQI up 15 in the last 6 hours — air quality is degrading. Ozone at AQI 65 — peak already passed at 1 PM under overcast 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 65 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 65
- UV peak
- 4.9 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 65
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 7.9 µg/m³, PM10 to 8.4 µg/m³.
- PM2.5/PM10
- 0.94
- Wind
- light
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 11:54 PM
- Moonset
- 11:52 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Decatur at a glance
- Today vs. normal: 74°F — typical for the season
- Last frost: March 20 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 37322
16-Day Forecast — Decatur
- Sun88°71°59%
- Mon86°70°44%
- Tue90°71°33%
- Wed92°69°22%
- Thu92°68°14%
- Fri87°69°34%
- Sat91°70°57%
- Sun91°69°43%
- Mon94°70°16%
- Tue83°61°10%
- Wed86°59°10%
- Thu90°62°33%
- Fri91°67°42%
- Sat93°68°45%
- Sun94°68°39%
- Mon86°67°42%
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 — Decatur
SPC has placed Decatur in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- 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 Decatur
- 37322