Karthaus, PA Weather & Growing Conditions
Today
75°F
Patchy Fog then Partly Sunny
Patchy fog before 8am. Partly sunny. High near 75, with temperatures falling to around 69 in the afternoon. Southeast wind 0 to 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Patchy Fog then Partly Sunny | 0 to 7 mph SE | 2% |
| Tonight | 58°F | Light Rain | 7 mph S | 99% |
| Thursday | 72°F | Light Rain | 3 to 7 mph SW | 83% |
| Thursday Night | 46°F | Mostly Cloudy | 3 mph SW | 4% |
| Friday | 65°F | Partly Sunny | 3 mph SW | 13% |
| Friday Night | 43°F | Mostly Cloudy then Slight Chance Light Rain | 2 mph W | 17% |
| Saturday | 54°F | Chance Light Rain | 3 to 7 mph W | 43% |
| Saturday Night | 37°F | Chance Light Rain | 7 mph W | 33% |
| Sunday | 56°F | Slight Chance Light Rain then Partly Sunny | 7 mph W | 15% |
| Sunday Night | 34°F | Partly Cloudy then Slight Chance Light Rain | 7 mph W | 15% |
| Monday | 56°F | Slight Chance Light Rain | 8 mph W | 21% |
| Monday Night | 34°F | Slight Chance Light Rain then Partly Cloudy | 6 mph W | 15% |
| Tuesday | 60°F | Mostly Sunny | 8 mph W | 5% |
| Tuesday Night | 33°F | Partly Cloudy | 3 to 7 mph W | 5% |
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 Nov 4, 2026.