New Bethlehem, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Bethlehem, a borough in Armstrong County, Pennsylvania.
Tonight
54°F
Partly Cloudy
Partly cloudy, with a low around 54. Northeast wind around 5 mph.
7-day forecast for New Bethlehem
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Partly Cloudy | 5 mph NE | 10% |
| Saturday | 74°F | Partly Sunny | 6 mph E | 7% |
| Saturday Night | 62°F | Mostly Cloudy then Showers And Thunderstorms | 6 mph SE | 76% |
| Sunday | 74°F | Showers And Thunderstorms | 7 mph SW | 97% |
| Sunday Night | 55°F | Rain Showers Likely | 8 mph N | 73% |
| Monday | 67°F | Chance Rain Showers | 9 mph NE | 29% |
| Monday Night | 54°F | Showers And Thunderstorms Likely | 8 to 12 mph E | 58% |
| Tuesday | 62°F | Showers And Thunderstorms Likely | 12 mph E | 65% |
| Tuesday Night | 50°F | Showers And Thunderstorms Likely | 14 mph E | 62% |
| Wednesday | 60°F | Rain Showers Likely | 13 mph E | 62% |
| Wednesday Night | 50°F | Chance Showers And Thunderstorms | 13 mph E | 51% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 9 mph E | 47% |
| Thursday Night | 50°F | Chance Rain Showers | 3 to 7 mph E | 25% |
| Friday | 69°F | Slight Chance Rain Showers then Partly Sunny | 7 mph NE | 19% |
Forecast source: National Weather Service (api.weather.gov) for New Bethlehem (41.006, -79.325). Updated through the day.
Growing snapshot for New Bethlehem
Last spring frost
May 10
First fall frost
Oct 12
Growing season
155 days
Hardiness zone
6a
More local growing data for New Bethlehem: nearby ZIP 16245 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
North Apollo
North Vandergrift
Orchard Hills
Rural Valley
Sagamore
Schenley
Shelocta
South Bethlehem
Spring Church
Templeton
West Hills
West Kittanning
Worthington
Yatesboro
Climate data from the nearest NOAA station, Putneyville 2 Se Dam, Pa (5.3 mi from New Bethlehem). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.