Johnstown, PA Weather & Growing Conditions
Today
80°F
Sunny
Sunny, with a high near 80. Southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Sunny | 5 mph SE | 0% |
| Tonight | 65°F | Partly Cloudy | 7 mph SE | 1% |
| Wednesday | 80°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 mph SE | 32% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 5 mph SE | 49% |
| Thursday | 80°F | Showers And Thunderstorms | 6 mph SW | 84% |
| Thursday Night | 67°F | Showers And Thunderstorms | 5 mph SW | 84% |
| Friday | 79°F | Showers And Thunderstorms | 6 mph SW | 81% |
| Friday Night | 65°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 mph SW | 81% |
| Saturday | 79°F | Chance Showers And Thunderstorms | 7 mph SW | 49% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 6 mph SW | 49% |
| Sunday | 81°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph W | 23% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms | 7 mph SW | 23% |
| Monday | 82°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 7 to 10 mph W | 35% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 6 to 9 mph W | 46% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Johnstown, PA
Last spring frost
Apr 29
First fall frost
Oct 21
Growing season
176 days
Hardiness zone
6b
Explore more for Johnstown, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Johnstown Cambria Co Ap, Pa (7.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.