Mount Jackson, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mount Jackson, a community in Lawrence County, Pennsylvania.
This Afternoon
78°F
Sunny
Sunny. High near 78, with temperatures falling to around 71 in the afternoon. Southwest wind around 9 mph.
7-day forecast for Mount Jackson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Sunny | 9 mph SW | 1% |
| Tonight | 55°F | Mostly Clear | 2 to 6 mph SE | 3% |
| Wednesday | 75°F | Partly Sunny then Chance Light Rain | 6 to 10 mph S | 34% |
| Wednesday Night | 59°F | Light Rain | 7 to 12 mph S | 100% |
| Thursday | 68°F | Mostly Sunny | 6 to 10 mph SW | 11% |
| Thursday Night | 45°F | Partly Cloudy | 0 to 5 mph SW | 2% |
| Friday | 64°F | Partly Sunny | 0 to 6 mph W | 14% |
| Friday Night | 42°F | Chance Light Rain | 5 mph NW | 27% |
| Saturday | 55°F | Chance Light Rain | 5 to 9 mph W | 29% |
| Saturday Night | 34°F | Chance Light Rain then Mostly Cloudy | 2 to 6 mph W | 29% |
| Sunday | 55°F | Partly Sunny then Slight Chance Light Rain | 2 to 8 mph W | 17% |
| Sunday Night | 32°F | Slight Chance Light Rain | 6 mph W | 17% |
| Monday | 57°F | Chance Light Rain | 6 to 10 mph W | 28% |
| Monday Night | 34°F | Chance Light Rain then Partly Cloudy | 5 to 8 mph SW | 28% |
Forecast source: National Weather Service (api.weather.gov) for Mount Jackson (40.968, -80.432). Updated through the day.
Growing snapshot for Mount Jackson
Last spring frost
Apr 30
First fall frost
Oct 23
Growing season
175 days
Hardiness zone
6a
More local growing data for Mount Jackson: nearby ZIP 16102 weather · frost dates · planting calendar · Pennsylvania frost dates
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New Castle Northwest
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S.N.P.J.
South New Castle
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Climate data from the nearest NOAA station, New Castle 1 N, Pa (4.7 mi from Mount Jackson). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.