Jonestown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jonestown, a borough in Lebanon County, Pennsylvania.
Today
75°F
Partly Sunny
Partly sunny, with a high near 75. East wind around 7 mph.
7-day forecast for Jonestown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Partly Sunny | 7 mph E | 2% |
| Tonight | 59°F | Mostly Cloudy then Rain Showers | 7 to 10 mph E | 79% |
| Sunday | 74°F | Rain Showers | 8 to 12 mph S | 92% |
| Sunday Night | 54°F | Showers And Thunderstorms | 7 to 10 mph W | 91% |
| Monday | 70°F | Partly Sunny | 10 mph NE | 14% |
| Monday Night | 49°F | Chance Rain Showers | 8 to 13 mph NE | 39% |
| Tuesday | 61°F | Chance Rain Showers | 14 mph E | 45% |
| Tuesday Night | 48°F | Chance Rain Showers | 15 mph NE | 41% |
| Wednesday | 62°F | Chance Rain Showers | 16 mph E | 39% |
| Wednesday Night | 48°F | Chance Rain Showers | 16 mph NE | 34% |
| Thursday | 64°F | Chance Rain Showers | 12 to 15 mph NE | 35% |
| Thursday Night | 48°F | Chance Rain Showers | 8 to 14 mph NE | 32% |
| Friday | 68°F | Slight Chance Rain Showers | 13 mph N | 23% |
| Friday Night | 48°F | Slight Chance Rain Showers | 9 to 13 mph N | 23% |
Forecast source: National Weather Service (api.weather.gov) for Jonestown (40.413, -76.481). Updated through the day.
Growing snapshot for Jonestown
Last spring frost
Apr 20
First fall frost
Oct 25
Growing season
185 days
More local growing data for Jonestown: nearby ZIP 17077 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Annville
Avon
Campbelltown
Cleona
Cornwall
Fort Indiantown Gap
Fredericksburg
Hebron
Lebanon
Lebanon South
Mount Gretna
Mount Gretna Heights
Myerstown
Palmyra
Pleasant Hill
Quentin
Sand Hill
Schaefferstown
Timber Hills
West Myerstown
Climate data from the nearest NOAA station, Lebanon 2 W, Pa (6 mi from Jonestown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.