Knoxville, PA Weather & Growing Conditions
Today
79°F
Sunny
Sunny, with a high near 79. South wind 0 to 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Sunny | 0 to 3 mph S | 0% |
| Tonight | 59°F | Partly Cloudy | 6 mph S | 0% |
| Wednesday | 80°F | Partly Sunny | 3 to 8 mph S | 13% |
| Wednesday Night | 65°F | Slight Chance Showers And Thunderstorms | 7 mph S | 15% |
| Thursday | 81°F | Showers And Thunderstorms | 7 mph SW | 84% |
| Thursday Night | 65°F | Showers And Thunderstorms | 6 mph SW | 84% |
| Friday | 81°F | Showers And Thunderstorms | 6 mph SW | 81% |
| Friday Night | 64°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph SW | 81% |
| Saturday | 80°F | Showers And Thunderstorms Likely | 3 to 7 mph SW | 58% |
| Saturday Night | 64°F | Showers And Thunderstorms Likely | 6 mph W | 58% |
| Sunday | 82°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 8 mph SW | 20% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms | 9 mph SW | 20% |
| Monday | 82°F | Chance Showers And Thunderstorms | 12 mph W | 39% |
| Monday Night | 63°F | Chance Showers And Thunderstorms | 6 to 10 mph W | 39% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Knoxville, PA
Last spring frost
May 9
First fall frost
Oct 12
Growing season
155 days
Hardiness zone
5b
Explore more for Knoxville, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Cowanesque Dam, Pa (14.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.