Collinsburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Collinsburg, a community in Westmoreland County, Pennsylvania.
Tonight
58°F
Partly Cloudy
Partly cloudy, with a low around 58. Northeast wind around 6 mph.
7-day forecast for Collinsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Partly Cloudy | 6 mph NE | 11% |
| Saturday | 80°F | Mostly Sunny | 5 mph E | 3% |
| Saturday Night | 65°F | Mostly Cloudy then Showers And Thunderstorms Likely | 7 mph SE | 55% |
| Sunday | 78°F | Showers And Thunderstorms | 7 to 10 mph SW | 94% |
| Sunday Night | 60°F | Showers And Thunderstorms | 9 mph N | 94% |
| Monday | 71°F | Chance Rain Showers | 12 mph NE | 43% |
| Monday Night | 58°F | Showers And Thunderstorms Likely | 13 mph E | 68% |
| Tuesday | 67°F | Showers And Thunderstorms | 13 to 16 mph E | 75% |
| Tuesday Night | 54°F | Showers And Thunderstorms Likely | 16 mph E | 71% |
| Wednesday | 65°F | Showers And Thunderstorms Likely | 15 mph E | 65% |
| Wednesday Night | 53°F | Chance Showers And Thunderstorms | 8 to 15 mph E | 52% |
| Thursday | 66°F | Chance Rain Showers | 7 to 10 mph E | 42% |
| Thursday Night | 52°F | Chance Rain Showers | 5 to 10 mph NE | 25% |
| Friday | 70°F | Slight Chance Rain Showers then Partly Sunny | 5 to 9 mph N | 20% |
Forecast source: National Weather Service (api.weather.gov) for Collinsburg (40.221, -79.781). Updated through the day.
Growing snapshot for Collinsburg
Last spring frost
Apr 27
First fall frost
Oct 22
Growing season
177 days
More local growing data for Collinsburg: nearby ZIP 15660 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
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Herminie
Hostetter
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Industry
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Leechburg
Level Green
Climate data from the nearest NOAA station, Donora 1 Sw, Pa (7.7 mi from Collinsburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.