Knoxville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Knoxville, a borough in Tioga County, Pennsylvania.
Today
81°F
Patchy Fog then Sunny
Patchy fog before 10am. Sunny, with a high near 81. South wind 0 to 3 mph.
7-day forecast for Knoxville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Patchy Fog then Sunny | 0 to 3 mph S | 0% |
| Tonight | 58°F | Partly Cloudy | 3 mph S | 0% |
| Wednesday | 82°F | Partly Sunny | 1 to 7 mph S | 10% |
| Wednesday Night | 65°F | Slight Chance Showers And Thunderstorms | 2 to 6 mph S | 16% |
| Thursday | 83°F | Showers And Thunderstorms | 2 to 7 mph SW | 84% |
| Thursday Night | 65°F | Showers And Thunderstorms | 1 to 5 mph SW | 84% |
| Friday | 82°F | Showers And Thunderstorms | 1 to 6 mph SW | 81% |
| Friday Night | 64°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph SW | 81% |
| Saturday | 81°F | Showers And Thunderstorms Likely | 7 mph SW | 58% |
| Saturday Night | 63°F | Showers And Thunderstorms Likely | 6 mph W | 58% |
| Sunday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 8 mph SW | 21% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms | 9 mph SW | 21% |
| Monday | 83°F | Chance Showers And Thunderstorms | 12 mph W | 39% |
| Monday Night | 63°F | Chance Showers And Thunderstorms | 7 to 10 mph W | 39% |
Forecast source: National Weather Service (api.weather.gov) for Knoxville (41.960, -77.438). Updated through the day.
Growing snapshot for Knoxville
Last spring frost
May 9
First fall frost
Oct 12
Growing season
155 days
Hardiness zone
5b
More local growing data for Knoxville: nearby ZIP 16928 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Arnot
Blossburg
Elkland
Lawrenceville
Liberty
Mainesburg
Mansfield
Millerton
Morris Run
Roseville
Sabinsville
Tioga
Wellsboro
Westfield
Climate data from the nearest NOAA station, Cowanesque Dam, Pa (14.5 mi from Knoxville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.