South Bethlehem, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Bethlehem, a borough in Armstrong County, Pennsylvania.
Overnight
49°F
Mostly Clear
Mostly clear, with a low around 49. Southeast wind around 2 mph.
7-day forecast for South Bethlehem
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Mostly Clear | 2 mph SE | 1% |
| Wednesday | 76°F | Partly Sunny | 2 to 7 mph S | 2% |
| Wednesday Night | 58°F | Light Rain | 8 mph S | 94% |
| Thursday | 68°F | Chance Light Rain then Partly Sunny | 5 to 10 mph SW | 36% |
| Thursday Night | 45°F | Partly Cloudy | 1 to 5 mph SW | 1% |
| Friday | 62°F | Partly Sunny | 1 to 6 mph SW | 14% |
| Friday Night | 40°F | Chance Light Rain | 1 to 5 mph W | 47% |
| Saturday | 52°F | Chance Light Rain | 6 to 9 mph W | 47% |
| Saturday Night | 35°F | Chance Light Rain | 8 mph W | 37% |
| Sunday | 53°F | Slight Chance Light Rain then Partly Sunny | 7 to 10 mph W | 15% |
| Sunday Night | 32°F | Partly Cloudy | 7 mph W | 8% |
| Monday | 54°F | Slight Chance Light Rain | 7 to 10 mph W | 22% |
| Monday Night | 32°F | Slight Chance Light Rain then Partly Cloudy | 5 to 8 mph SW | 18% |
| Tuesday | 58°F | Mostly Sunny | 8 to 12 mph SW | 6% |
Forecast source: National Weather Service (api.weather.gov) for South Bethlehem (40.999, -79.340). Updated through the day.
Growing snapshot for South Bethlehem
Last spring frost
May 10
First fall frost
Oct 12
Growing season
155 days
Hardiness zone
6a
More local growing data for South Bethlehem: nearby ZIP 16223 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Apollo
Applewold
Atwood
Clinton
Dayton
Distant
East Brady
Elderton
Ford City
Ford Cliff
Freeport
Kittanning
Lenape Heights
Manorville
New Bethlehem
North Apollo
North Vandergrift
Orchard Hills
Rural Valley
Sagamore
Schenley
Shelocta
Spring Church
Templeton
West Hills
West Kittanning
Worthington
Yatesboro
Climate data from the nearest NOAA station, Putneyville 2 Se Dam, Pa (5.7 mi from South Bethlehem). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.