Twilight, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Twilight, a borough in Washington County, Pennsylvania.
Today
85°F
Sunny
Sunny, with a high near 85. East wind around 5 mph.
7-day forecast for Twilight
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 5 mph E | 0% |
| Tonight | 68°F | Partly Cloudy | 5 mph SE | 2% |
| Wednesday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph S | 29% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms | 5 mph S | 38% |
| Thursday | 84°F | Showers And Thunderstorms | 3 to 8 mph SW | 79% |
| Thursday Night | 68°F | Showers And Thunderstorms | 2 to 6 mph SW | 79% |
| Friday | 84°F | Showers And Thunderstorms | 3 to 8 mph SW | 82% |
| Friday Night | 66°F | Showers And Thunderstorms | 3 to 7 mph SW | 82% |
| Saturday | 83°F | Showers And Thunderstorms Likely | 8 mph SW | 60% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 3 to 7 mph SW | 60% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph SW | 24% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 24% |
| Monday | 86°F | Chance Showers And Thunderstorms | 8 to 12 mph SW | 36% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 6 to 9 mph SW | 48% |
Forecast source: National Weather Service (api.weather.gov) for Twilight (40.116, -79.894). Updated through the day.
Growing snapshot for Twilight
Last spring frost
Apr 13
First fall frost
Nov 5
Growing season
205 days
Hardiness zone
6b
More local growing data for Twilight: nearby ZIP 15434 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Charleroi Lock 4, Pa (4.5 mi from Twilight). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.