Karthaus, PA Weather & Growing Conditions
This Afternoon
71°F
Slight Chance Rain Showers
A slight chance of rain showers. Partly sunny, with a high near 71. Southeast wind around 3 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Slight Chance Rain Showers | 3 mph SE | 15% |
| Tonight | 59°F | Rain Showers | 5 mph SE | 91% |
| Sunday | 74°F | Rain Showers | 5 mph SW | 96% |
| Sunday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 6 mph N | 19% |
| Monday | 68°F | Partly Sunny then Slight Chance Rain Showers | 6 mph NE | 23% |
| Monday Night | 48°F | Rain Showers Likely | 5 mph NE | 56% |
| Tuesday | 62°F | Rain Showers Likely | 6 mph E | 56% |
| Tuesday Night | 46°F | Chance Rain Showers | 6 mph E | 49% |
| Wednesday | 59°F | Chance Rain Showers | 6 mph E | 31% |
| Wednesday Night | 45°F | Slight Chance Rain Showers | 6 mph E | 23% |
| Thursday | 61°F | Slight Chance Rain Showers | 5 mph E | 23% |
| Thursday Night | 45°F | Slight Chance Rain Showers | 3 mph NE | 24% |
| Friday | 66°F | Slight Chance Rain Showers | 5 mph N | 23% |
| Friday Night | 45°F | Slight Chance Rain Showers | 5 mph N | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Karthaus, PA
Last spring frost
May 21
First fall frost
Sep 27
Growing season
130 days
Hardiness zone
6a
Explore more for Karthaus, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Clarence, Pa (11 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.