Jonestown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jonestown, a community in Columbia County, Pennsylvania.
Overnight
46°F
Patchy Fog
Patchy fog. Partly cloudy, with a low around 46. Wind around 0 mph.
7-day forecast for Jonestown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Patchy Fog | 0 mph | 0% |
| Wednesday | 73°F | Patchy Fog then Mostly Sunny | 0 to 7 mph S | 2% |
| Wednesday Night | 57°F | Mostly Cloudy then Light Rain Likely | 3 to 7 mph SE | 64% |
| Thursday | 70°F | Light Rain | 3 to 8 mph S | 98% |
| Thursday Night | 52°F | Chance Light Rain | 0 to 3 mph SW | 49% |
| Friday | 67°F | Mostly Cloudy then Slight Chance Light Rain | 1 mph NW | 17% |
| Friday Night | 43°F | Slight Chance Light Rain then Partly Cloudy | 1 mph NW | 17% |
| Saturday | 59°F | Chance Light Rain | 2 to 6 mph W | 34% |
| Saturday Night | 37°F | Chance Light Rain | 7 mph W | 34% |
| Sunday | 55°F | Slight Chance Light Rain then Mostly Sunny | 7 mph W | 15% |
| Sunday Night | 33°F | Partly Cloudy | 7 mph W | 6% |
| Monday | 56°F | Mostly Sunny | 6 to 9 mph W | 11% |
| Monday Night | 31°F | Partly Cloudy | 7 mph W | 11% |
| Tuesday | 60°F | Mostly Sunny | 5 to 8 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov) for Jonestown (41.127, -76.309). Updated through the day.
Growing snapshot for Jonestown
Last spring frost
May 4
First fall frost
Oct 11
Growing season
159 days
Hardiness zone
6b
More local growing data for Jonestown: nearby ZIP 17878 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Benton 3 Ne, Pa (4 mi from Jonestown). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.