Jamestown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jamestown, a community in Cambria County, Pennsylvania.
Today
81°F
Sunny
Sunny, with a high near 81. Southeast wind around 6 mph.
7-day forecast for Jamestown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Sunny | 6 mph SE | 0% |
| Tonight | 64°F | Partly Cloudy | 6 mph SE | 5% |
| Wednesday | 80°F | Mostly Cloudy then Chance Showers And Thunderstorms | 2 to 6 mph SE | 35% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms | 2 to 6 mph S | 39% |
| Thursday | 81°F | Showers And Thunderstorms | 2 to 6 mph SW | 87% |
| Thursday Night | 68°F | Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph SW | 87% |
| Friday | 81°F | Showers And Thunderstorms | 2 to 7 mph SW | 79% |
| Friday Night | 65°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph SW | 79% |
| Saturday | 80°F | Chance Showers And Thunderstorms | 5 to 8 mph W | 44% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 3 to 7 mph W | 44% |
| Sunday | 82°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 5 to 9 mph W | 19% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 to 9 mph W | 19% |
| Monday | 83°F | Mostly Sunny then Chance Showers And Thunderstorms | 9 to 13 mph W | 26% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 7 to 10 mph W | 35% |
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 Aug 4, 2026.