Armagh, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Armagh, a borough in Indiana County, Pennsylvania.
Overnight
54°F
Patchy Fog
Patchy fog before 2am. Partly cloudy, with a low around 54. East wind around 3 mph.
7-day forecast for Armagh
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Patchy Fog | 3 mph E | 1% |
| Saturday | 73°F | Partly Sunny | 3 to 7 mph E | 4% |
| Saturday Night | 61°F | Showers And Thunderstorms Likely | 5 to 9 mph SE | 56% |
| Sunday | 74°F | Showers And Thunderstorms | 5 to 8 mph SW | 96% |
| Sunday Night | 51°F | Showers And Thunderstorms | 7 mph N | 84% |
| Monday | 65°F | Chance Rain Showers | 8 mph NE | 35% |
| Monday Night | 49°F | Rain Showers Likely | 8 to 12 mph E | 69% |
| Tuesday | 59°F | Rain Showers Likely | 12 to 15 mph E | 69% |
| Tuesday Night | 47°F | Rain Showers Likely | 16 mph E | 56% |
| Wednesday | 59°F | Rain Showers Likely | 16 mph E | 56% |
| Wednesday Night | 47°F | Showers And Thunderstorms Likely | 14 mph E | 57% |
| Thursday | 62°F | Rain Showers Likely | 8 to 12 mph E | 57% |
| Thursday Night | 47°F | Chance Showers And Thunderstorms | 3 to 8 mph E | 37% |
| Friday | 66°F | Slight Chance Rain Showers | 3 to 7 mph NE | 20% |
Forecast source: National Weather Service (api.weather.gov) for Armagh (40.454, -79.032). Updated through the day.
Growing snapshot for Armagh
Last spring frost
May 8
First fall frost
Oct 13
Growing season
157 days
Hardiness zone
6b
More local growing data for Armagh: nearby ZIP 15920 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Alverda
Black Lick
Blairsville
Bolivar
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Chevy Chase Heights
Clymer
Commodore
Coral
Creekside
Dixonville
Ernest
Glen Campbell
Graceton
Heilwood
Homer City
Indiana
Jacksonville
Lucerne Mines
Marion Center
Plumville
Robinson
Rossiter
Saltsburg
Seward
Smicksburg
Vintondale
Climate data from the nearest NOAA station, Indiana 3 Se, Pa (9.7 mi from Armagh). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.