Mount Jackson, PA Weather & Growing Conditions
Tonight
64°F
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms before 11pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 64. South wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph S | 68% |
| Sunday | 76°F | Showers And Thunderstorms | 7 mph W | 97% |
| Sunday Night | 53°F | Chance Showers And Thunderstorms | 8 mph N | 31% |
| Monday | 70°F | Slight Chance Rain Showers | 8 mph NE | 16% |
| Monday Night | 53°F | Chance Rain Showers | 7 to 10 mph NE | 38% |
| Tuesday | 66°F | Chance Rain Showers | 13 mph E | 48% |
| Tuesday Night | 52°F | Rain Showers Likely | 15 mph E | 73% |
| Wednesday | 64°F | Showers And Thunderstorms Likely | 14 mph E | 73% |
| Wednesday Night | 50°F | Chance Rain Showers | 10 to 14 mph E | 52% |
| Thursday | 66°F | Chance Rain Showers | 10 mph E | 52% |
| Thursday Night | 49°F | Mostly Cloudy | 3 to 7 mph E | 14% |
| Friday | 70°F | Partly Sunny | 7 mph NE | 13% |
| Friday Night | 49°F | Partly Cloudy | 2 to 7 mph N | 11% |
| Saturday | 72°F | Mostly Sunny | 3 to 8 mph N | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mount Jackson, PA
Last spring frost
Apr 30
First fall frost
Oct 23
Growing season
175 days
Hardiness zone
6a
Explore more for Mount Jackson, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, New Castle 1 N, Pa (4.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.