Prospect, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Prospect, a borough in Butler County, Pennsylvania.
Today
74°F
Partly Sunny then Slight Chance Light Rain
A slight chance of rain after 1pm. Partly sunny, with a high near 74. South wind 5 to 9 mph. Chance of precipitation is 20%.
7-day forecast for Prospect
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Partly Sunny then Slight Chance Light Rain | 5 to 9 mph S | 22% |
| Tonight | 58°F | Light Rain | 7 to 10 mph S | 81% |
| Thursday | 67°F | Slight Chance Light Rain then Partly Sunny | 6 to 10 mph SW | 20% |
| Thursday Night | 44°F | Partly Cloudy | 5 mph SW | 0% |
| Friday | 61°F | Partly Sunny then Slight Chance Light Rain | 2 to 7 mph SW | 17% |
| Friday Night | 39°F | Chance Light Rain | 3 to 8 mph W | 47% |
| Saturday | 52°F | Chance Light Rain | 10 mph W | 40% |
| Saturday Night | 33°F | Chance Light Rain | 8 mph W | 33% |
| Sunday | 53°F | Partly Sunny | 6 to 10 mph W | 8% |
| Sunday Night | 31°F | Partly Cloudy | 7 mph W | 7% |
| Monday | 54°F | Slight Chance Light Rain | 7 to 10 mph W | 16% |
| Monday Night | 32°F | Slight Chance Light Rain then Mostly Clear | 3 to 7 mph SW | 16% |
| Tuesday | 59°F | Mostly Sunny | 8 to 12 mph SW | 4% |
| Tuesday Night | 32°F | Partly Cloudy | 2 to 7 mph W | 4% |
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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Bruin
Butler
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Evans City
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Fenelton
Forestville
Harlansburg
Harmony
Harrisville
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Karns City
Lake Arthur Estates
Mars
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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 Nov 4, 2026.