Prospect, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Prospect, a borough in Butler County, Pennsylvania.
Tonight
56°F
Partly Cloudy
Partly cloudy, with a low around 56. Northeast wind around 6 mph.
7-day forecast for Prospect
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Partly Cloudy | 6 mph NE | 5% |
| Saturday | 76°F | Partly Sunny | 6 mph E | 12% |
| Saturday Night | 62°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SE | 73% |
| Sunday | 75°F | Showers And Thunderstorms | 7 mph SW | 95% |
| Sunday Night | 56°F | Showers And Thunderstorms | 8 mph N | 86% |
| Monday | 68°F | Mostly Cloudy then Slight Chance Rain Showers | 10 mph NE | 24% |
| Monday Night | 54°F | Chance Rain Showers | 12 mph E | 54% |
| Tuesday | 65°F | Showers And Thunderstorms Likely | 13 mph E | 62% |
| Tuesday Night | 52°F | Showers And Thunderstorms Likely | 15 mph E | 63% |
| Wednesday | 62°F | Showers And Thunderstorms Likely | 14 mph E | 63% |
| Wednesday Night | 51°F | Chance Showers And Thunderstorms | 13 mph E | 52% |
| Thursday | 64°F | Chance Rain Showers | 7 to 12 mph E | 42% |
| Thursday Night | 51°F | Slight Chance Rain Showers | 7 mph NE | 18% |
| Friday | 69°F | Slight Chance Rain Showers | 7 mph NE | 16% |
Forecast source: National Weather Service (api.weather.gov) for Prospect (40.899, -80.049). Updated through the day.
Growing snapshot for Prospect
Last spring frost
May 7
First fall frost
Oct 14
Growing season
159 days
Hardiness zone
6a
More local growing data for Prospect: nearby ZIP 16052 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Barkeyville
Boyers
Bruin
Butler
Callery
Cherry Valley
Chicora
Connoquenessing
East Butler
Eau Claire
Evans City
Fairview
Fenelton
Forestville
Harlansburg
Harmony
Harrisville
Homeacre-Lyndora
Karns City
Lake Arthur Estates
Mars
Meadowood
Meridian
Nixon
North Washington
Oak Hills
Petrolia
Portersville
Renfrew
Saxonburg
Climate data from the nearest NOAA station, Butler 2 Sw, Pa (8.6 mi from Prospect). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.