Williamsburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Williamsburg, a borough in Blair County, Pennsylvania.
Today
84°F
Patchy Fog then Sunny
Patchy fog before 10am. Sunny, with a high near 84. East wind 0 to 3 mph.
7-day forecast for Williamsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Patchy Fog then Sunny | 0 to 3 mph E | 0% |
| Tonight | 63°F | Partly Cloudy then Patchy Fog | 0 to 3 mph E | 7% |
| Wednesday | 83°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 5 mph E | 46% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms | 0 to 3 mph SE | 42% |
| Thursday | 87°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 86% |
| Thursday Night | 68°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 mph SW | 86% |
| Friday | 86°F | Showers And Thunderstorms | 0 to 5 mph W | 77% |
| Friday Night | 67°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 mph SW | 77% |
| Saturday | 85°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 1 to 6 mph W | 46% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 3 mph W | 46% |
| Sunday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph W | 16% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph W | 16% |
| Monday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 9 mph W | 21% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 2 to 8 mph W | 21% |
Forecast source: National Weather Service (api.weather.gov) for Williamsburg (40.463, -78.205). Updated through the day.
Growing snapshot for Williamsburg
Last spring frost
Apr 19
First fall frost
Oct 28
Growing season
191 days
Hardiness zone
6b
More local growing data for Williamsburg: nearby ZIP 16693 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Altoona
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Bellwood
Birmingham
Brooks Mill
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Canoe Creek
Carson Valley
Charlottsville
Clappertown
Claysburg
Cotton Town
Cove Forge
Cross Keys
Culp
Curryville
Dumb Hundred
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East Altoona
East Freedom
East Sharpsburg
Elberta
Eldorado
Fisherville
Foot of Ten
Fort Fetter
Fostoria
Franklin Forge
Frankstown
Fredericksburg
Climate data from the nearest NOAA station, Raystown Lake 2, Pa (9.8 mi from Williamsburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.