Prompton, PA Weather & Growing Conditions
Tonight
45°F
Partly Cloudy
Partly cloudy, with a low around 45. North wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Partly Cloudy | 5 mph N | 0% |
| Saturday | 67°F | Mostly Sunny | 3 mph E | 1% |
| Saturday Night | 51°F | Mostly Cloudy then Rain Showers | 3 to 7 mph SE | 77% |
| Sunday | 63°F | Rain Showers | 8 mph S | 99% |
| Sunday Night | 52°F | Rain Showers | 7 mph NW | 97% |
| Monday | 64°F | Slight Chance Rain Showers | 7 mph NE | 21% |
| Monday Night | 46°F | Chance Rain Showers | 7 mph NE | 31% |
| Tuesday | 57°F | Chance Rain Showers | 9 mph E | 34% |
| Tuesday Night | 43°F | Chance Rain Showers | 8 to 12 mph E | 34% |
| Wednesday | 56°F | Chance Rain Showers | 13 mph E | 28% |
| Wednesday Night | 43°F | Chance Showers And Thunderstorms | 10 mph E | 36% |
| Thursday | 58°F | Chance Showers And Thunderstorms | 9 mph E | 36% |
| Thursday Night | 45°F | Chance Showers And Thunderstorms | 3 to 7 mph NE | 33% |
| Friday | 64°F | Chance Rain Showers | 8 mph N | 25% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Prompton, PA
Last spring frost
May 14
First fall frost
Oct 1
Growing season
140 days
Hardiness zone
6a
Explore more for Prompton, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Pleasant Mt 1 W, Pa (10 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.