Twilight, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Twilight, a borough in Washington County, Pennsylvania.
Overnight
58°F
Partly Cloudy
Partly cloudy, with a low around 58. Northeast wind around 3 mph.
7-day forecast for Twilight
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Partly Cloudy | 3 mph NE | 1% |
| Saturday | 80°F | Partly Sunny | 3 mph E | 3% |
| Saturday Night | 64°F | Chance Rain Showers | 7 mph SE | 47% |
| Sunday | 78°F | Showers And Thunderstorms | 7 to 10 mph SW | 94% |
| Sunday Night | 56°F | Showers And Thunderstorms | 7 to 10 mph N | 94% |
| Monday | 68°F | Chance Rain Showers | 10 mph NE | 43% |
| Monday Night | 54°F | Showers And Thunderstorms Likely | 10 mph NE | 72% |
| Tuesday | 64°F | Showers And Thunderstorms Likely | 10 to 14 mph E | 72% |
| Tuesday Night | 50°F | Showers And Thunderstorms Likely | 14 mph E | 65% |
| Wednesday | 62°F | Rain Showers Likely | 14 mph E | 65% |
| Wednesday Night | 51°F | Showers And Thunderstorms Likely | 8 to 13 mph E | 56% |
| Thursday | 66°F | Rain Showers Likely | 9 mph E | 56% |
| Thursday Night | 50°F | Chance Showers And Thunderstorms | 5 to 9 mph NE | 36% |
| Friday | 68°F | Partly Sunny then Slight Chance Rain Showers | 5 to 9 mph NE | 21% |
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 Sep 19, 2026.