Forty Five, TN Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Forty Five, TN in one place.
Sunny, with a high near 100. Heat index values as high as 106. South southeast wind 0 to 5 mph.
Local Weather Overview
This forecast page for Forty Five, 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 14, 2026 9:30 AM CDT.
The active forecast window currently covers Sep 15 to Sep 20, 2026 for Forty Five, TN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 15 to Sep 20, 2026
- Latest sync
- Sep 14, 2026 9:30 AM CDT
- Forecast office
- MEG
- Source
- NOAA / NWS
Daily Outlook
This Week in Forty Five
Tuesday looks like the warmest upcoming period in Forty Five at 100 degrees F.
Friday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Tuesday at about 0 to 5 mph SSE.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 14, 2026 9:30 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- MEG
- Radar station
- KNQA
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 75. Heat index values as high as 103. South southeast wind 0 to 5 mph.
Sunny, with a high near 99. South southeast wind around 5 mph.
Mostly clear, with a low around 72. South southeast wind 0 to 5 mph.
Sunny, with a high near 98. Southeast wind around 0 mph.
Mostly clear, with a low around 71. Northeast wind around 0 mph.
Sunny, with a high near 99.
Mostly clear, with a low around 70.
Sunny, with a high near 98.
Mostly clear, with a low around 71.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 70. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Sep 15
|
Sunny
|
100°F |
0 to 5 mph
SSE
|
|
Tuesday Night
Sep 15
|
Mostly Clear
|
75°F |
0 to 5 mph
SSE
|
|
Wednesday
Sep 16
|
Sunny
|
99°F |
5 mph
SSE
|
|
Wednesday Night
Sep 16
|
Mostly Clear
|
72°F |
0 to 5 mph
SSE
|
|
Thursday
Sep 17
|
Sunny
|
98°F |
0 mph
|
|
Thursday Night
Sep 17
|
Mostly Clear
|
71°F |
0 mph
|
|
Friday
Sep 18
|
Sunny
|
99°F |
0 to 5 mph
E
|
|
Friday Night
Sep 18
|
Mostly Clear
|
70°F |
0 mph
|
|
Saturday
Sep 19
|
Sunny
|
98°F |
0 to 5 mph
SSE
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
71°F |
0 mph
|
|
Sunday
Sep 20
|
Sunny then Slight Chance Showers And Thunderstorms
|
95°F |
0 to 5 mph
S
|
|
Sunday Night
Sep 20
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
70°F |
0 to 5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Forty Five.