Laboratory, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Laboratory, a community in Washington County, Pennsylvania.
Today
84°F
Sunny
Sunny, with a high near 84. East wind around 5 mph.
7-day forecast for Laboratory
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 5 mph E | 0% |
| Tonight | 67°F | Partly Cloudy | 6 mph SE | 1% |
| Wednesday | 84°F | Mostly Sunny then Scattered Showers And Thunderstorms | 2 to 6 mph S | 33% |
| Wednesday Night | 68°F | Scattered Showers And Thunderstorms | 5 mph S | 50% |
| Thursday | 83°F | Showers And Thunderstorms Likely | 5 to 9 mph SW | 74% |
| Thursday Night | 67°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 7 mph SW | 74% |
| Friday | 82°F | Showers And Thunderstorms | 5 to 9 mph SW | 83% |
| Friday Night | 66°F | Showers And Thunderstorms | 7 mph SW | 83% |
| Saturday | 81°F | Showers And Thunderstorms Likely | 6 to 9 mph SW | 58% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely | 3 to 7 mph SW | 55% |
| Sunday | 84°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph SW | 22% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 22% |
| Monday | 84°F | Chance Showers And Thunderstorms | 8 to 12 mph SW | 33% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 6 to 9 mph SW | 47% |
Forecast source: National Weather Service (api.weather.gov) for Laboratory (40.151, -80.215). Updated through the day.
Growing snapshot for Laboratory
Last spring frost
Apr 24
First fall frost
Oct 23
Growing season
181 days
Hardiness zone
6b
More local growing data for Laboratory: nearby ZIP 15301 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Aaronsburg
Allenport
Arnold City
Atlasburg
Avella
Baidland
Beallsville
Belle Vernon
Bentleyville
Bulger
Burgettstown
California
Canonsburg
Cecil-Bishop
Claysville
Cokeburg
Cross Creek
Deemston
Donora
Dunlevy
East Marianna
East Washington
Eighty Four
Ellsworth
Elrama
Fairhope
Fayette City
Finleyville
Fredericktown
Green Hills
Climate data from the nearest NOAA station, Washington 3 Ne, Pa (3.5 mi from Laboratory). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.