McKnightstown, PA Weather & Growing Conditions
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. East wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 3 mph E | 0% |
| Tonight | 69°F | Mostly Cloudy | 0 to 3 mph E | 8% |
| Wednesday | 81°F | Showers And Thunderstorms Likely | 0 to 3 mph E | 69% |
| Wednesday Night | 70°F | Showers And Thunderstorms Likely | 0 to 3 mph SE | 60% |
| Thursday | 88°F | Patchy Fog then Showers And Thunderstorms Likely | 1 to 6 mph S | 55% |
| Thursday Night | 71°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph SW | 55% |
| Friday | 88°F | Partly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph W | 56% |
| Friday Night | 68°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 3 mph W | 56% |
| Saturday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 43% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 2 mph NW | 43% |
| Sunday | 88°F | Mostly Sunny | 0 to 5 mph NW | 13% |
| Sunday Night | 70°F | Partly Cloudy | 2 mph W | 13% |
| Monday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 7 mph W | 15% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 1 to 6 mph W | 15% |
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 Aug 4, 2026.