Greensburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Greensburg, a city in Westmoreland County, Pennsylvania.
Today
79°F
Mostly Sunny
Mostly sunny, with a high near 79. South wind 2 to 8 mph.
7-day forecast for Greensburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Mostly Sunny | 2 to 8 mph S | 3% |
| Tonight | 60°F | Light Rain | 10 mph S | 93% |
| Thursday | 70°F | Light Rain Likely then Partly Sunny | 9 to 16 mph SW | 62% |
| Thursday Night | 48°F | Partly Cloudy | 2 to 7 mph SW | 2% |
| Friday | 64°F | Partly Sunny then Slight Chance Light Rain | 3 to 9 mph SW | 20% |
| Friday Night | 41°F | Chance Light Rain | 3 to 8 mph W | 42% |
| Saturday | 53°F | Chance Light Rain | 9 to 16 mph W | 42% |
| Saturday Night | 35°F | Chance Light Rain | 7 to 14 mph W | 28% |
| Sunday | 55°F | Slight Chance Light Rain then Partly Sunny | 8 to 17 mph W | 15% |
| Sunday Night | 32°F | Partly Cloudy | 9 to 14 mph SW | 8% |
| Monday | 56°F | Mostly Sunny | 10 to 17 mph W | 14% |
| Monday Night | 33°F | Mostly Clear | 8 to 14 mph SW | 14% |
| Tuesday | 60°F | Mostly Sunny | 14 to 21 mph SW | 4% |
| Tuesday Night | 33°F | Partly Cloudy | 5 to 13 mph SW | 4% |
Forecast source: National Weather Service (api.weather.gov) for Greensburg (40.311, -79.544). Updated through the day.
Growing snapshot for Greensburg
Last spring frost
May 1
First fall frost
Oct 13
Growing season
164 days
Hardiness zone
6b
More local growing data for Greensburg: nearby ZIP 15601 weather · frost dates · planting calendar · Pennsylvania frost dates
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Level Green
Climate data from the nearest NOAA station, Mt Pleasant, Pa (7 mi from Greensburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.