Knox, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Knox, a borough in Clarion County, Pennsylvania.
Today
73°F
Partly Sunny
Partly sunny. High near 73, with temperatures falling to around 67 in the afternoon. South wind 6 to 9 mph. Chance of precipitation is 20%.
7-day forecast for Knox
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Partly Sunny | 6 to 9 mph S | 15% |
| Tonight | 59°F | Light Rain | 10 mph S | 92% |
| Thursday | 67°F | Chance Light Rain then Mostly Sunny | 6 to 12 mph SW | 42% |
| Thursday Night | 44°F | Partly Cloudy | 5 mph SW | 1% |
| Friday | 60°F | Partly Sunny then Slight Chance Light Rain | 2 to 7 mph SW | 23% |
| Friday Night | 39°F | Chance Light Rain | 2 to 7 mph W | 51% |
| Saturday | 51°F | Chance Light Rain | 7 to 10 mph W | 51% |
| Saturday Night | 33°F | Chance Light Rain | 8 mph W | 39% |
| Sunday | 52°F | Slight Chance Light Rain then Partly Sunny | 7 to 12 mph W | 15% |
| Sunday Night | 31°F | Partly Cloudy | 7 mph W | 11% |
| Monday | 53°F | Slight Chance Light Rain | 7 to 10 mph W | 22% |
| Monday Night | 31°F | Slight Chance Light Rain then Partly Cloudy | 7 mph SW | 18% |
| Tuesday | 57°F | Mostly Sunny | 7 to 13 mph SW | 8% |
| Tuesday Night | 31°F | Partly Cloudy | 6 mph W | 8% |
Forecast source: National Weather Service (api.weather.gov) for Knox (41.234, -79.536). Updated through the day.
Growing snapshot for Knox
Last spring frost
May 9
First fall frost
Oct 11
Growing season
154 days
Hardiness zone
6a
More local growing data for Knox: nearby ZIP 16232 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Callensburg
Clarion
Crown
Foxburg
Hawthorn
Leeper
Marianne
Parker
Rimersburg
Shippenville
Sligo
St. Petersburg
Strattanville
Tylersburg
Vowinckel
Climate data from the nearest NOAA station, Clarion 3 Sw, Pa (6.2 mi from Knox). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.