Klahr, PA Weather & Growing Conditions
Tonight
54°F
Partly Cloudy
Partly cloudy, with a low around 54. Northeast wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Partly Cloudy | 6 mph NE | 3% |
| Saturday | 71°F | Partly Sunny | 6 mph E | 3% |
| Saturday Night | 61°F | Chance Rain Showers | 6 to 12 mph S | 47% |
| Sunday | 73°F | Rain Showers | 5 to 10 mph SW | 97% |
| Sunday Night | 57°F | Showers And Thunderstorms | 5 to 10 mph N | 97% |
| Monday | 63°F | Chance Rain Showers | 6 to 10 mph NE | 42% |
| Monday Night | 54°F | Showers And Thunderstorms Likely | 7 to 12 mph E | 71% |
| Tuesday | 57°F | Showers And Thunderstorms | 8 to 12 mph E | 76% |
| Tuesday Night | 50°F | Showers And Thunderstorms Likely | 9 to 15 mph E | 72% |
| Wednesday | 55°F | Showers And Thunderstorms Likely | 8 to 13 mph E | 66% |
| Wednesday Night | 49°F | Showers And Thunderstorms Likely | 8 to 12 mph E | 58% |
| Thursday | 58°F | Chance Showers And Thunderstorms | 8 mph E | 54% |
| Thursday Night | 51°F | Chance Rain Showers | 6 mph NE | 36% |
| Friday | 64°F | Slight Chance Rain Showers | 6 mph N | 24% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Klahr, PA
Last spring frost
Apr 23
First fall frost
Oct 21
Growing season
177 days
Hardiness zone
6b
Explore more for Klahr, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Altoona Blair Co Ap, Pa (10.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.