Deemston, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Deemston, a borough in Washington County, Pennsylvania.
This Afternoon
78°F
Sunny
Sunny. High near 78, with temperatures falling to around 72 in the afternoon. South wind around 3 mph.
7-day forecast for Deemston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Sunny | 3 mph S | 1% |
| Tonight | 52°F | Mostly Clear | 5 mph S | 2% |
| Wednesday | 76°F | Partly Sunny | 2 to 9 mph S | 10% |
| Wednesday Night | 60°F | Light Rain | 8 mph S | 98% |
| Thursday | 71°F | Chance Light Rain | 6 to 12 mph SW | 29% |
| Thursday Night | 48°F | Mostly Cloudy | 1 to 5 mph SW | 9% |
| Friday | 66°F | Partly Sunny | 1 to 7 mph W | 13% |
| Friday Night | 44°F | Chance Light Rain | 5 mph NW | 25% |
| Saturday | 56°F | Chance Light Rain | 5 to 10 mph W | 28% |
| Saturday Night | 36°F | Chance Light Rain then Mostly Cloudy | 2 to 7 mph W | 27% |
| Sunday | 56°F | Partly Sunny then Slight Chance Light Rain | 3 to 9 mph SW | 15% |
| Sunday Night | 35°F | Slight Chance Light Rain | 8 mph SW | 24% |
| Monday | 56°F | Chance Light Rain | 7 to 13 mph W | 29% |
| Monday Night | 35°F | Chance Light Rain then Partly Cloudy | 7 to 12 mph SW | 29% |
Forecast source: National Weather Service (api.weather.gov) for Deemston (40.027, -80.033). Updated through the day.
Growing snapshot for Deemston
Last spring frost
Apr 13
First fall frost
Nov 5
Growing season
205 days
Hardiness zone
6b
More local growing data for Deemston: nearby ZIP 15333 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Charleroi Lock 4, Pa (10 mi from Deemston). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.