Knoxville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Knoxville, a borough in Tioga County, Pennsylvania.
This Afternoon
72°F
Partly Sunny
Partly sunny, with a high near 72. South wind around 10 mph.
7-day forecast for Knoxville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Partly Sunny | 10 mph S | 2% |
| Tonight | 57°F | Light Rain | 10 mph S | 96% |
| Thursday | 69°F | Light Rain Likely | 7 to 12 mph SW | 72% |
| Thursday Night | 46°F | Mostly Cloudy | 1 to 6 mph SW | 7% |
| Friday | 63°F | Mostly Cloudy | 1 to 5 mph SW | 14% |
| Friday Night | 42°F | Mostly Cloudy then Chance Light Rain | 0 to 3 mph W | 32% |
| Saturday | 52°F | Light Rain Likely | 3 to 10 mph W | 56% |
| Saturday Night | 36°F | Light Rain Likely | 9 to 14 mph W | 56% |
| Sunday | 53°F | Slight Chance Light Rain | 13 mph W | 15% |
| Sunday Night | 34°F | Partly Cloudy | 13 to 16 mph W | 9% |
| Monday | 54°F | Mostly Sunny then Slight Chance Light Rain | 13 mph W | 16% |
| Monday Night | 34°F | Slight Chance Light Rain then Partly Cloudy | 12 mph W | 16% |
| Tuesday | 56°F | Mostly Sunny | 14 mph W | 14% |
| Tuesday Night | 33°F | Slight Chance Light Rain | 8 to 14 mph W | 15% |
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 Nov 4, 2026.