Martinsburg Junction, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Martinsburg Junction, a community in Blair County, Pennsylvania.
Today
76°F
Mostly Sunny
Mostly sunny. High near 76, with temperatures falling to around 70 in the afternoon. South wind 0 to 12 mph, with gusts as high as 21 mph.
7-day forecast for Martinsburg Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Mostly Sunny | 0 to 12 mph S | 1% |
| Tonight | 58°F | Light Rain | 10 mph S | 90% |
| Thursday | 73°F | Chance Light Rain | 5 to 10 mph SW | 53% |
| Thursday Night | 47°F | Mostly Cloudy | 0 to 3 mph W | 5% |
| Friday | 66°F | Partly Sunny | 0 to 3 mph W | 13% |
| Friday Night | 41°F | Partly Cloudy | 1 to 5 mph W | 9% |
| Saturday | 54°F | Slight Chance Light Rain | 5 to 13 mph W | 23% |
| Saturday Night | 35°F | Slight Chance Light Rain then Mostly Cloudy | 8 to 12 mph W | 23% |
| Sunday | 55°F | Partly Sunny | 12 mph W | 7% |
| Sunday Night | 33°F | Partly Cloudy | 9 mph W | 6% |
| Monday | 55°F | Mostly Sunny | 8 to 14 mph W | 10% |
| Monday Night | 33°F | Mostly Clear | 5 to 8 mph W | 5% |
| Tuesday | 60°F | Mostly Sunny | 6 to 14 mph W | 3% |
| Tuesday Night | 33°F | Partly Cloudy | 3 to 8 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Martinsburg Junction (40.310, -78.337). Updated through the day.
Growing snapshot for Martinsburg Junction
Last spring frost
Apr 23
First fall frost
Oct 21
Growing season
177 days
Hardiness zone
6b
More local growing data for Martinsburg Junction: nearby ZIP 16631 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Altoona Blair Co Ap, Pa (2.2 mi from Martinsburg Junction). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.