Armagh, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Armagh, a borough in Indiana County, Pennsylvania.
This Afternoon
77°F
Sunny
Sunny. High near 77, with temperatures falling to around 69 in the afternoon. South wind around 6 mph.
7-day forecast for Armagh
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Sunny | 6 mph S | 1% |
| Tonight | 50°F | Mostly Clear | 6 mph SE | 2% |
| Wednesday | 74°F | Partly Sunny | 3 to 9 mph SE | 2% |
| Wednesday Night | 59°F | Light Rain | 5 to 9 mph S | 98% |
| Thursday | 69°F | Light Rain Likely | 5 to 10 mph SW | 67% |
| Thursday Night | 49°F | Partly Cloudy then Slight Chance Light Rain | 0 to 5 mph SW | 15% |
| Friday | 64°F | Slight Chance Light Rain | 0 to 6 mph W | 20% |
| Friday Night | 43°F | Chance Light Rain | 0 to 3 mph NW | 35% |
| Saturday | 53°F | Chance Light Rain | 3 to 12 mph W | 35% |
| Saturday Night | 36°F | Chance Light Rain | 2 to 7 mph W | 35% |
| Sunday | 53°F | Slight Chance Light Rain | 3 to 10 mph W | 22% |
| Sunday Night | 36°F | Chance Light Rain | 6 to 9 mph W | 25% |
| Monday | 53°F | Chance Light Rain | 9 to 15 mph W | 33% |
| Monday Night | 36°F | Chance Light Rain | 9 mph SW | 33% |
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
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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 Nov 3, 2026.