Prospect, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Prospect, a borough in Butler County, Pennsylvania.
This Afternoon
70°F
Slight Chance Rain Showers
A slight chance of rain showers. Partly sunny, with a high near 70. East wind around 3 mph. Chance of precipitation is 20%.
7-day forecast for Prospect
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Slight Chance Rain Showers | 3 mph E | 18% |
| Tonight | 62°F | Rain Showers | 5 mph SE | 78% |
| Sunday | 75°F | Showers And Thunderstorms | 5 to 8 mph W | 98% |
| Sunday Night | 52°F | Chance Showers And Thunderstorms | 8 mph N | 28% |
| Monday | 69°F | Chance Rain Showers | 9 mph NE | 25% |
| Monday Night | 51°F | Chance Rain Showers | 8 to 12 mph E | 48% |
| Tuesday | 64°F | Chance Rain Showers | 14 mph E | 53% |
| Tuesday Night | 50°F | Rain Showers Likely | 15 mph E | 69% |
| Wednesday | 62°F | Rain Showers Likely | 15 mph E | 69% |
| Wednesday Night | 49°F | Chance Rain Showers | 14 mph E | 52% |
| Thursday | 64°F | Chance Rain Showers | 8 to 12 mph E | 52% |
| Thursday Night | 48°F | Mostly Cloudy | 7 mph E | 14% |
| Friday | 69°F | Partly Sunny | 7 mph NE | 13% |
| Friday Night | 48°F | Partly Cloudy | 6 mph NE | 12% |
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
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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 20, 2026.