Renfrew, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Renfrew, a community in Butler County, Pennsylvania.
Today
86°F
Patchy Fog then Sunny
Patchy fog before 10am. Sunny, with a high near 86. East wind around 3 mph.
7-day forecast for Renfrew
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Patchy Fog then Sunny | 3 mph E | 0% |
| Tonight | 64°F | Mostly Clear | 3 mph E | 0% |
| Wednesday | 87°F | Partly Sunny then Scattered Showers And Thunderstorms | 5 mph SE | 40% |
| Wednesday Night | 67°F | Scattered Showers And Thunderstorms | 3 mph SE | 50% |
| Thursday | 86°F | Showers And Thunderstorms Likely | 2 to 7 mph S | 67% |
| Thursday Night | 66°F | Showers And Thunderstorms Likely | 1 to 5 mph SW | 67% |
| Friday | 85°F | Showers And Thunderstorms | 2 to 7 mph SW | 83% |
| Friday Night | 65°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph SW | 83% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 47% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 5 mph SW | 47% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms | 3 to 8 mph SW | 22% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph SW | 24% |
| Monday | 87°F | Chance Rain Showers | 6 to 10 mph SW | 39% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 48% |
Forecast source: National Weather Service (api.weather.gov) for Renfrew (40.807, -79.962). Updated through the day.
Growing snapshot for Renfrew
Last spring frost
May 7
First fall frost
Oct 14
Growing season
159 days
Hardiness zone
6b
More local growing data for Renfrew: nearby ZIP 16053 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Butler 2 Sw, Pa (4 mi from Renfrew). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.