Bruin, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bruin, a borough in Butler County, Pennsylvania.
Today
84°F
Areas Of Fog then Sunny
Areas of fog before 10am. Sunny, with a high near 84. East wind around 2 mph.
7-day forecast for Bruin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Areas Of Fog then Sunny | 2 mph E | 0% |
| Tonight | 62°F | Mostly Clear | 2 mph SE | 0% |
| Wednesday | 86°F | Partly Sunny then Scattered Showers And Thunderstorms | 5 mph SE | 38% |
| Wednesday Night | 66°F | Scattered Showers And Thunderstorms | 2 mph SE | 50% |
| Thursday | 85°F | Showers And Thunderstorms Likely | 2 to 6 mph S | 69% |
| Thursday Night | 66°F | Showers And Thunderstorms Likely | 1 to 5 mph SW | 69% |
| Friday | 84°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 86% |
| Friday Night | 64°F | Showers And Thunderstorms | 3 mph SW | 86% |
| Saturday | 83°F | Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 6 mph SW | 45% |
| Saturday Night | 64°F | Chance Showers And Thunderstorms | 5 mph SW | 45% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 25% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 6 mph SW | 27% |
| Monday | 86°F | Chance Rain Showers | 5 to 8 mph SW | 45% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 3 to 7 mph W | 51% |
Forecast source: National Weather Service (api.weather.gov) for Bruin (41.054, -79.727). Updated through the day.
Growing snapshot for Bruin
Last spring frost
May 7
First fall frost
Oct 14
Growing season
158 days
Hardiness zone
6a
More local growing data for Bruin: nearby ZIP 16022 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Barkeyville
Boyers
Butler
Callery
Cherry Valley
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Connoquenessing
East Butler
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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
Prospect
Renfrew
Saxonburg
Climate data from the nearest NOAA station, Slippery Rock 1 Ssw, Pa (17 mi from Bruin). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.