Cottage Grove, TN Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Cottage Grove, TN in one place.
Sunny, with a high near 99. Heat index values as high as 107. West northwest wind 0 to 5 mph.
Local Weather Overview
This forecast page for Cottage Grove, 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: Sep 17, 2026 9:40 AM CDT.
The active forecast window currently covers Sep 17 to Sep 23, 2026 for Cottage Grove, TN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 17 to Sep 23, 2026
- Latest sync
- Sep 17, 2026 9:40 AM CDT
- Forecast office
- MEG
- Source
- NOAA / NWS
Daily Outlook
This Week in Cottage Grove
Friday looks like the warmest upcoming period in Cottage Grove at 100 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 10 mph NNE.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 17, 2026 9:40 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- MEG
- Radar station
- KPAH
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Clear, with a low around 74. Heat index values as high as 102. Northwest wind around 0 mph.
Sunny, with a high near 100. Heat index values as high as 108. Northwest wind 0 to 5 mph.
Mostly clear, with a low around 72. Heat index values as high as 101. Southeast wind around 0 mph.
Sunny. High near 100, with temperatures falling to around 96 in the afternoon. Southwest wind 0 to 5 mph.
Mostly clear, with a low around 72. South wind 0 to 5 mph.
Sunny. High near 100, with temperatures falling to around 97 in the afternoon. West southwest wind around 5 mph.
Mostly clear, with a low around 72. South southwest wind 0 to 5 mph.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 97. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
A slight chance of rain showers before 7pm. Mostly clear, with a low around 66. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Sep 17
|
Sunny
|
99°F |
0 to 5 mph
WNW
|
|
Tonight
Sep 17
|
Clear
|
74°F |
0 mph
|
|
Friday
Sep 18
|
Sunny
|
100°F |
0 to 5 mph
NW
|
|
Friday Night
Sep 18
|
Mostly Clear
|
72°F |
0 mph
|
|
Saturday
Sep 19
|
Sunny
|
100°F |
0 to 5 mph
SW
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
72°F |
0 to 5 mph
S
|
|
Sunday
Sep 20
|
Sunny
|
100°F |
5 mph
WSW
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
72°F |
0 to 5 mph
SSW
|
|
Monday
Sep 21
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
97°F |
5 mph
WSW
|
|
Monday Night
Sep 21
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
69°F |
0 to 5 mph
ENE
|
|
Tuesday
Sep 22
|
Chance Showers And Thunderstorms
|
91°F |
5 to 10 mph
NNE
|
|
Tuesday Night
Sep 22
|
Chance Showers And Thunderstorms
|
66°F |
5 to 10 mph
NE
|
|
Wednesday
Sep 23
|
Mostly Sunny then Slight Chance Rain Showers
|
88°F |
5 mph
NE
|
|
Wednesday Night
Sep 23
|
Slight Chance Rain Showers then Mostly Clear
|
66°F |
5 to 10 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Cottage Grove.