Johnstown, PA Weather & Growing Conditions
This Afternoon
73°F
Partly Sunny
Partly sunny, with a high near 73. Southeast wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Partly Sunny | 7 mph SE | 4% |
| Tonight | 60°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 to 8 mph S | 48% |
| Sunday | 73°F | Showers And Thunderstorms | 3 to 8 mph SW | 92% |
| Sunday Night | 52°F | Showers And Thunderstorms | 6 mph N | 92% |
| Monday | 65°F | Chance Rain Showers | 7 mph NE | 28% |
| Monday Night | 50°F | Rain Showers Likely | 9 mph E | 71% |
| Tuesday | 59°F | Rain Showers Likely | 9 to 14 mph SE | 71% |
| Tuesday Night | 47°F | Rain Showers Likely | 15 mph E | 59% |
| Wednesday | 56°F | Rain Showers Likely | 14 mph SE | 58% |
| Wednesday Night | 48°F | Rain Showers Likely | 9 to 13 mph E | 57% |
| Thursday | 61°F | Rain Showers Likely | 9 mph E | 57% |
| Thursday Night | 47°F | Chance Showers And Thunderstorms | 2 to 7 mph E | 41% |
| Friday | 65°F | Slight Chance Rain Showers | 2 to 6 mph NE | 24% |
| Friday Night | 47°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 6 mph NE | 24% |
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 (4.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.