Jamestown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jamestown, a community in Cambria County, Pennsylvania.
Tonight
53°F
Partly Cloudy
Partly cloudy, with a low around 53. East wind around 3 mph.
7-day forecast for Jamestown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Partly Cloudy | 3 mph E | 1% |
| Saturday | 71°F | Partly Sunny | 3 to 7 mph SE | 3% |
| Saturday Night | 61°F | Chance Rain Showers | 8 mph SE | 53% |
| Sunday | 73°F | Showers And Thunderstorms | 8 mph SW | 97% |
| Sunday Night | 56°F | Showers And Thunderstorms | 6 mph N | 97% |
| Monday | 63°F | Chance Rain Showers | 8 mph NE | 40% |
| Monday Night | 53°F | Showers And Thunderstorms Likely | 8 to 12 mph E | 71% |
| Tuesday | 58°F | Showers And Thunderstorms Likely | 13 mph E | 73% |
| Tuesday Night | 49°F | Showers And Thunderstorms Likely | 15 mph E | 67% |
| Wednesday | 55°F | Showers And Thunderstorms Likely | 14 mph E | 66% |
| Wednesday Night | 49°F | Showers And Thunderstorms Likely | 9 to 13 mph E | 56% |
| Thursday | 59°F | Chance Showers And Thunderstorms | 9 mph E | 52% |
| Thursday Night | 50°F | Chance Rain Showers | 7 mph E | 34% |
| Friday | 64°F | Slight Chance Rain Showers | 5 to 8 mph N | 23% |
Forecast source: National Weather Service (api.weather.gov) for Jamestown (40.404, -78.659). Updated through the day.
Growing snapshot for Jamestown
Last spring frost
May 17
First fall frost
Oct 2
Growing season
136 days
Hardiness zone
6a
More local growing data for Jamestown: nearby ZIP 15925 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Ebensburg Sewage Plt, Pa (6.3 mi from Jamestown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.