Petersburg, Tennessee Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Petersburg weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Foggy12%—93°68°—
- SundayJul 5Light Drizzle34%0.02″92°73°-1°
- MondayJul 6Light Rain41%0.09″85°70°-7°
- TuesdayJul 7Light Drizzle20%—83°66°-2°
- WednesdayJul 8Overcast15%—85°66°+2°
- ThursdayJul 9Light Drizzle24%—89°66°+4°
- FridayJul 10Light Drizzle56%—90°71°+1°
AQI 70 (Moderate), driven by Ozone. AQI up 31 in the last 6 hours — air quality is degrading. Ozone at AQI 91 — 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 91 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
- Present
- AQI 91
- UV peak
- 3.9 at earlier today
- Sky at peak
- partly cloudy
- Projected peak
- AQI 91
PM × Wind × Precip
PM2.5 at 8.6 µg/m³ (AQI 48) with a 0.81 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.81
- 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
- 10:35 PM
- Moonset
- 9:57 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Petersburg at a glance
- Today vs. normal: 17°F above the seasonal normal for this latitude
- Last frost: March 19 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 37144
16-Day Forecast — Petersburg
- Sat93°68°12%
- Sun92°73°34%
- Mon85°70°41%
- Tue83°66°20%
- Wed85°66°15%
- Thu89°66°24%
- Fri90°71°56%
- Sat79°70°54%
- Sun80°62°34%
- Mon79°56°16%
- Tue82°58°17%
- Wed83°61°29%
- Thu79°68°39%
- Fri86°67°62%
- Sat80°70°48%
- Sun81°68°52%
Forecast data from Open-Meteo (CC BY 4.0).
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 — Petersburg
SPC has placed Petersburg 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 Petersburg
- 37144