McKnightstown, PA Weather & Growing Conditions
Tonight
50°F
Mostly Clear
Mostly clear, with a low around 50. South wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Mostly Clear | 2 mph S | 0% |
| Wednesday | 74°F | Patchy Fog then Mostly Sunny | 0 to 10 mph S | 0% |
| Wednesday Night | 60°F | Mostly Cloudy then Rain Showers | 5 to 8 mph S | 83% |
| Thursday | 74°F | Rain Showers | 3 to 9 mph S | 79% |
| Thursday Night | 59°F | Chance Rain Showers | 0 to 3 mph W | 54% |
| Friday | 70°F | Chance Rain Showers | 2 mph NW | 54% |
| Friday Night | 48°F | Chance Rain Showers then Mostly Cloudy | 0 to 3 mph NW | 47% |
| Saturday | 63°F | Slight Chance Rain Showers | 3 to 9 mph NW | 15% |
| Saturday Night | 39°F | Partly Cloudy | 3 to 8 mph NW | 14% |
| Sunday | 60°F | Mostly Sunny | 3 to 7 mph W | 7% |
| Sunday Night | 38°F | Partly Cloudy then Slight Chance Rain Showers | 7 mph W | 22% |
| Monday | 59°F | Slight Chance Rain Showers | 7 to 13 mph NW | 23% |
| Monday Night | 38°F | Slight Chance Rain Showers | 3 to 8 mph W | 23% |
| Tuesday | 63°F | Sunny | 7 to 12 mph W | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for McKnightstown, PA
Last spring frost
Apr 28
First fall frost
Oct 17
Growing season
170 days
Hardiness zone
7a
Explore more for McKnightstown, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Cashtown 1S, Pa (1.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.