Bellevue, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Bellevue, a borough in Allegheny County, Pennsylvania.
Overnight
59°F
Mostly Cloudy
Mostly cloudy, with a low around 59. Northeast wind around 5 mph.
7-day forecast for Bellevue
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Mostly Cloudy | 5 mph NE | 1% |
| Saturday | 79°F | Partly Sunny | 5 mph E | 4% |
| Saturday Night | 65°F | Showers And Thunderstorms Likely | 5 mph SE | 68% |
| Sunday | 78°F | Showers And Thunderstorms | 5 to 9 mph SW | 98% |
| Sunday Night | 56°F | Showers And Thunderstorms | 9 mph N | 98% |
| Monday | 68°F | Chance Rain Showers | 12 mph NE | 37% |
| Monday Night | 55°F | Rain Showers Likely | 12 mph NE | 60% |
| Tuesday | 64°F | Rain Showers Likely | 14 mph E | 61% |
| Tuesday Night | 53°F | Rain Showers Likely | 13 to 16 mph E | 63% |
| Wednesday | 63°F | Rain Showers Likely | 15 mph E | 63% |
| Wednesday Night | 52°F | Showers And Thunderstorms Likely | 9 to 14 mph E | 62% |
| Thursday | 66°F | Rain Showers Likely | 9 mph E | 58% |
| Thursday Night | 52°F | Chance Rain Showers | 5 to 9 mph NE | 26% |
| Friday | 69°F | Slight Chance Rain Showers | 8 mph NE | 18% |
Forecast source: National Weather Service (api.weather.gov) for Bellevue (40.494, -80.055). Updated through the day.
Growing snapshot for Bellevue
Last spring frost
Apr 24
First fall frost
Oct 27
Growing season
186 days
Hardiness zone
6b
More local growing data for Bellevue: nearby ZIP 15202 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Emsworth L/D Ohio Rvr, Pa (0.9 mi from Bellevue). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.