Laboratory, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Laboratory, a community in Washington County, Pennsylvania.
Tonight
54°F
Mostly Clear
Mostly clear, with a low around 54. South wind 3 to 7 mph.
7-day forecast for Laboratory
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Mostly Clear | 3 to 7 mph S | 2% |
| Wednesday | 76°F | Partly Sunny | 6 to 12 mph S | 11% |
| Wednesday Night | 60°F | Light Rain | 13 mph S | 99% |
| Thursday | 69°F | Slight Chance Light Rain then Mostly Sunny | 8 to 14 mph SW | 23% |
| Thursday Night | 48°F | Partly Cloudy | 2 to 6 mph SW | 4% |
| Friday | 64°F | Partly Sunny | 2 to 8 mph W | 9% |
| Friday Night | 44°F | Slight Chance Light Rain | 3 to 7 mph NW | 23% |
| Saturday | 54°F | Chance Light Rain | 6 to 12 mph W | 27% |
| Saturday Night | 37°F | Chance Light Rain then Mostly Cloudy | 3 to 8 mph W | 25% |
| Sunday | 54°F | Partly Sunny then Slight Chance Light Rain | 5 to 12 mph SW | 15% |
| Sunday Night | 36°F | Slight Chance Light Rain | 9 mph W | 22% |
| Monday | 55°F | Chance Light Rain | 9 to 14 mph W | 26% |
| Monday Night | 37°F | Chance Light Rain then Partly Cloudy | 9 to 14 mph SW | 26% |
| Tuesday | 59°F | Mostly Sunny | 13 to 18 mph SW | 8% |
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
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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 Nov 4, 2026.