Deemston, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Deemston, a borough in Washington County, Pennsylvania.
Today
85°F
Areas Of Fog then Sunny
Areas of fog before 9am. Sunny, with a high near 85. East wind 0 to 5 mph.
7-day forecast for Deemston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Areas Of Fog then Sunny | 0 to 5 mph E | 0% |
| Tonight | 67°F | Partly Cloudy | 1 to 5 mph E | 2% |
| Wednesday | 86°F | Mostly Sunny then Isolated Showers And Thunderstorms | 0 to 5 mph S | 20% |
| Wednesday Night | 68°F | Scattered Showers And Thunderstorms | 1 to 5 mph S | 49% |
| Thursday | 84°F | Showers And Thunderstorms | 2 to 8 mph SW | 76% |
| Thursday Night | 68°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 to 6 mph SW | 76% |
| Friday | 83°F | Showers And Thunderstorms | 3 to 8 mph SW | 83% |
| Friday Night | 66°F | Showers And Thunderstorms | 2 to 6 mph SW | 83% |
| Saturday | 82°F | Showers And Thunderstorms Likely | 5 to 8 mph SW | 59% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 6 mph SW | 59% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph SW | 24% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms | 7 mph SW | 24% |
| Monday | 86°F | Chance Showers And Thunderstorms | 7 to 10 mph SW | 32% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 48% |
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 Aug 4, 2026.