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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

WhenTempForecastWindPrecip
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

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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.