Chalfant, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chalfant, a borough in Allegheny County, Pennsylvania.
This Afternoon
79°F
Sunny
Sunny. High near 79, with temperatures falling to around 73 in the afternoon. South wind around 7 mph.
7-day forecast for Chalfant
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Sunny | 7 mph S | 1% |
| Tonight | 53°F | Mostly Clear | 5 mph SE | 2% |
| Wednesday | 79°F | Partly Sunny | 2 to 10 mph S | 7% |
| Wednesday Night | 61°F | Light Rain | 9 mph S | 96% |
| Thursday | 72°F | Chance Light Rain | 7 to 14 mph SW | 36% |
| Thursday Night | 49°F | Partly Cloudy | 1 to 7 mph SW | 5% |
| Friday | 67°F | Partly Sunny | 1 to 7 mph W | 11% |
| Friday Night | 45°F | Chance Light Rain | 2 to 6 mph NW | 26% |
| Saturday | 57°F | Chance Light Rain | 6 to 13 mph W | 29% |
| Saturday Night | 38°F | Chance Light Rain then Mostly Cloudy | 3 to 9 mph W | 25% |
| Sunday | 57°F | Partly Sunny then Slight Chance Light Rain | 5 to 12 mph SW | 17% |
| Sunday Night | 37°F | Slight Chance Light Rain | 9 mph W | 20% |
| Monday | 58°F | Chance Light Rain | 9 to 17 mph W | 31% |
| Monday Night | 38°F | Chance Light Rain then Partly Cloudy | 8 to 12 mph SW | 31% |
Forecast source: National Weather Service (api.weather.gov) for Chalfant (40.410, -79.839). Updated through the day.
Growing snapshot for Chalfant
Last spring frost
Apr 5
First fall frost
Nov 10
Growing season
219 days
Hardiness zone
6b
More local growing data for Chalfant: nearby ZIP 15112 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Braddock Lock 2, Pa (1.5 mi from Chalfant). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.