Jennerstown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jennerstown, a borough in Somerset County, Pennsylvania.
Tonight
52°F
Areas Of Fog
Areas of fog before 5am. Partly cloudy, with a low around 52. Northeast wind around 2 mph.
7-day forecast for Jennerstown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Areas Of Fog | 2 mph NE | 2% |
| Saturday | 72°F | Partly Sunny | 2 to 7 mph SE | 3% |
| Saturday Night | 60°F | Partly Cloudy then Chance Rain Showers | 5 to 9 mph SE | 49% |
| Sunday | 73°F | Showers And Thunderstorms | 5 to 8 mph SW | 95% |
| Sunday Night | 57°F | Showers And Thunderstorms | 5 mph N | 95% |
| Monday | 65°F | Chance Rain Showers | 3 to 8 mph E | 47% |
| Monday Night | 53°F | Showers And Thunderstorms Likely | 10 mph E | 71% |
| Tuesday | 60°F | Showers And Thunderstorms Likely | 10 to 14 mph SE | 73% |
| Tuesday Night | 48°F | Showers And Thunderstorms Likely | 15 mph SE | 71% |
| Wednesday | 57°F | Showers And Thunderstorms Likely | 14 mph SE | 65% |
| Wednesday Night | 48°F | Showers And Thunderstorms Likely | 9 to 14 mph SE | 56% |
| Thursday | 60°F | Chance Showers And Thunderstorms | 8 mph SE | 48% |
| Thursday Night | 48°F | Chance Rain Showers | 2 to 8 mph E | 32% |
| Friday | 65°F | Slight Chance Rain Showers | 2 to 7 mph NE | 22% |
Forecast source: National Weather Service (api.weather.gov) for Jennerstown (40.163, -79.061). Updated through the day.
Growing snapshot for Jennerstown
Last spring frost
May 6
First fall frost
Oct 12
Growing season
159 days
Hardiness zone
6a
More local growing data for Jennerstown: nearby ZIP 15547 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Laurel Summit, Pa (3.8 mi from Jennerstown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.