Johnstown, PA Weather & Growing Conditions
Tonight
54°F
Partly Cloudy
Partly cloudy, with a low around 54. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Partly Cloudy | 5 mph NE | 2% |
| Saturday | 71°F | Partly Sunny | 7 mph SE | 3% |
| Saturday Night | 61°F | Mostly Cloudy then Chance Rain Showers | 8 to 13 mph SE | 54% |
| Sunday | 72°F | Showers And Thunderstorms | 7 mph SW | 95% |
| Sunday Night | 56°F | Showers And Thunderstorms | 7 mph N | 95% |
| Monday | 64°F | Chance Rain Showers | 8 mph E | 39% |
| Monday Night | 54°F | Showers And Thunderstorms Likely | 9 to 15 mph E | 71% |
| Tuesday | 59°F | Showers And Thunderstorms Likely | 15 mph E | 72% |
| Tuesday Night | 50°F | Showers And Thunderstorms Likely | 15 to 20 mph E | 65% |
| Wednesday | 57°F | Showers And Thunderstorms Likely | 13 to 16 mph E | 64% |
| Wednesday Night | 50°F | Showers And Thunderstorms Likely | 13 to 17 mph E | 55% |
| Thursday | 59°F | Chance Showers And Thunderstorms | 7 to 12 mph SE | 47% |
| Thursday Night | 49°F | Chance Rain Showers | 5 to 8 mph E | 30% |
| Friday | 65°F | Slight Chance Rain Showers | 7 mph NE | 22% |
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 Sep 19, 2026.