Philadelphia, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Philadelphia, a city in Loudon County, Tennessee.
Today
71°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a high near 71. South wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Philadelphia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Showers And Thunderstorms | 10 to 20 mph S | 86% |
| Tonight | 59°F | Showers And Thunderstorms | 0 to 10 mph SW | 94% |
| Thursday | 73°F | Partly Sunny | 0 to 5 mph W | 5% |
| Thursday Night | 48°F | Partly Cloudy | 0 mph | 4% |
| Friday | 71°F | Sunny | 0 to 5 mph N | 4% |
| Friday Night | 42°F | Mostly Clear | 0 to 5 mph NW | 1% |
| Saturday | 62°F | Mostly Sunny | 5 to 10 mph N | 1% |
| Saturday Night | 34°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Sunday | 60°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Sunday Night | 33°F | Mostly Clear | 0 mph | 1% |
| Monday | 62°F | Sunny | 0 to 5 mph N | 1% |
| Monday Night | 34°F | Mostly Clear | 0 mph | 1% |
| Tuesday | 66°F | Sunny | 0 mph | 2% |
| Tuesday Night | 36°F | Mostly Clear | 0 mph | 2% |
Forecast source: National Weather Service (api.weather.gov) for Philadelphia (35.679, -84.400). Updated through the day.
Growing snapshot for Philadelphia
Last spring frost
Apr 5
First fall frost
Nov 1
Growing season
210 days
Hardiness zone
7b
More local growing data for Philadelphia: nearby ZIP 37774 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Lenoir City, Tn (6.8 mi from Philadelphia). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.