Mount Union, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mount Union, a borough in Huntingdon County, Pennsylvania.
Tonight
64°F
Rain Showers Likely
Rain showers likely. Mostly cloudy, with a low around 64. East wind 1 to 7 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Mount Union
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 64°F | Rain Showers Likely | 1 to 7 mph E | 57% |
| Sunday | 80°F | Rain Showers | 2 to 6 mph SW | 97% |
| Sunday Night | 55°F | Showers And Thunderstorms then Mostly Cloudy | 5 mph NW | 89% |
| Monday | 72°F | Partly Sunny then Chance Rain Showers | 5 mph NE | 32% |
| Monday Night | 54°F | Rain Showers Likely | 5 mph NE | 65% |
| Tuesday | 64°F | Rain Showers Likely | 6 mph E | 70% |
| Tuesday Night | 51°F | Rain Showers Likely | 6 mph E | 58% |
| Wednesday | 60°F | Chance Rain Showers | 6 mph E | 54% |
| Wednesday Night | 49°F | Chance Rain Showers | 6 mph E | 36% |
| Thursday | 62°F | Chance Rain Showers | 6 mph NE | 29% |
| Thursday Night | 49°F | Slight Chance Rain Showers | 3 mph NE | 24% |
| Friday | 69°F | Chance Rain Showers | 5 mph N | 26% |
| Friday Night | 49°F | Chance Rain Showers | 5 mph N | 26% |
| Saturday | 72°F | Slight Chance Rain Showers | 5 mph N | 17% |
Forecast source: National Weather Service (api.weather.gov) for Mount Union (40.384, -77.882). Updated through the day.
Growing snapshot for Mount Union
Last spring frost
Apr 19
First fall frost
Oct 28
Growing season
191 days
Hardiness zone
7a
More local growing data for Mount Union: nearby ZIP 17066 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Alexandria
Allenport
Allensville
Beavertown
Broad Top City
Burnt Cabins
Cassville
Cedar Crest
Coalmont
Dudley
Huntingdon
Kistler
Mapleton
Marklesburg
McConnellstown
Mill Creek
Orbisonia
Petersburg
Robertsdale
Rockhill
Saltillo
Shade Gap
Shirleysburg
Three Springs
Wood
Climate data from the nearest NOAA station, Raystown Lake 2, Pa (11.7 mi from Mount Union). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.