Petersburg, TN Weather Forecast
Local 7-day forecast
Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Petersburg, TN in one place.
Mostly cloudy, with a low around 70. Southwest wind around 0 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: Jul 18, 2026 7:32 AM EDT.
The active forecast window currently covers Jul 18 to Jul 24, 2026 for Petersburg, TN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 24, 2026
- Latest sync
- Jul 18, 2026 7:32 AM EDT
- Forecast office
- MRX
- Source
- NOAA / NWS
Daily Outlook
This Week in Petersburg
Monday looks like the warmest upcoming period in Petersburg at 86 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Tuesday at about 0 to 10 mph SW.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 18, 2026 7:32 AM EDT
- Coverage
- 7 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
A slight chance of rain showers between 10am and 11am, then showers and thunderstorms likely. Partly sunny, with a high near 85. Southwest wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 11pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Southwest wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers and thunderstorms. Mostly cloudy, with a high near 84. West wind around 5 mph. Chance of precipitation is 80%.
Showers and thunderstorms likely before 2am. Partly cloudy, with a low around 68. South wind 0 to 5 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. South wind 0 to 5 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 69. Southwest wind 0 to 5 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms between 8am and 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Showers and thunderstorms likely. Partly cloudy, with a low around 69. Chance of precipitation is 70%.
Showers and thunderstorms likely before 8am, then a chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 70%.
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 61. Chance of precipitation is 50%.
Mostly sunny, with a high near 81.
Partly cloudy, with a low around 62.
Mostly sunny, with a high near 83.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 18
|
Mostly Cloudy
|
70°F |
0 mph
|
|
Saturday
Jul 18
|
Showers And Thunderstorms Likely
|
85°F |
0 to 5 mph
SW
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
69°F |
5 mph
SW
|
|
Sunday
Jul 19
|
Slight Chance Showers And Thunderstorms
|
84°F |
5 mph
W
|
|
Sunday Night
Jul 19
|
Showers And Thunderstorms Likely
|
68°F |
0 to 5 mph
S
|
|
Monday
Jul 20
|
Mostly Sunny then Chance Showers And Thunderstorms
|
86°F |
0 to 5 mph
S
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
69°F |
0 to 5 mph
SW
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms
|
86°F |
0 to 10 mph
SW
|
|
Tuesday Night
Jul 21
|
Showers And Thunderstorms Likely
|
69°F |
10 mph
SW
|
|
Wednesday
Jul 22
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
83°F |
10 mph
W
|
|
Wednesday Night
Jul 22
|
Chance Showers And Thunderstorms
|
61°F |
5 mph
N
|
|
Thursday
Jul 23
|
Mostly Sunny
|
81°F |
5 mph
NE
|
|
Thursday Night
Jul 23
|
Partly Cloudy
|
62°F |
0 to 5 mph
NE
|
|
Friday
Jul 24
|
Mostly Sunny
|
83°F |
0 to 5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Petersburg.
