Petersburg, TN Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Petersburg, TN in one place.
Mostly sunny, with a high near 84. Southwest wind 0 to 5 mph.
Local Weather Overview
This forecast page for Petersburg, TN is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 13, 2026 1:23 AM EDT.
The active forecast window currently covers Apr 15 to Apr 19, 2026 for Petersburg, TN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 19, 2026
- Latest sync
- Apr 13, 2026 1:23 AM EDT
- Forecast office
- MRX
- Source
- NOAA / NWS
Daily Outlook
This Week in Petersburg
Saturday looks like the warmest upcoming period in Petersburg at 86 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 58 degrees F.
The strongest winds are forecast for Thursday at about 0 to 10 mph SW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 13, 2026 1:23 AM EDT
- Coverage
- 5 days
- Time zone
- America/New_York
- Forecast office
- MRX
- Radar station
- KMRX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 58. Southwest wind 0 to 5 mph.
A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 58. Chance of precipitation is 20%.
Mostly sunny, with a high near 83.
Mostly clear, with a low around 59.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 20%.
A slight chance of rain showers. Mostly cloudy, with a low around 59. Chance of precipitation is 20%.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 15
|
Mostly Sunny
|
84°F |
0 to 5 mph
SW
|
|
Wednesday Night
Apr 15
|
Partly Cloudy
|
58°F |
0 to 5 mph
SW
|
|
Thursday
Apr 16
|
Partly Sunny then Slight Chance Showers And Thunderstorms
|
82°F |
0 to 10 mph
SW
|
|
Thursday Night
Apr 16
|
Slight Chance Showers And Thunderstorms
|
58°F |
0 to 10 mph
SW
|
|
Friday
Apr 17
|
Mostly Sunny
|
83°F |
0 to 5 mph
SW
|
|
Friday Night
Apr 17
|
Mostly Clear
|
59°F |
0 to 5 mph
S
|
|
Saturday
Apr 18
|
Mostly Sunny then Slight Chance Rain Showers
|
86°F |
0 to 10 mph
S
|
|
Saturday Night
Apr 18
|
Slight Chance Rain Showers
|
59°F |
5 mph
SW
|
|
Sunday
Apr 19
|
Chance Rain Showers
|
76°F |
5 to 10 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Petersburg.
