Johnstown, PA Weather & Growing Conditions
This Afternoon
73°F
Partly Sunny
Partly sunny, with a high near 73. South wind around 10 mph, with gusts as high as 22 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Partly Sunny | 10 mph S | 1% |
| Tonight | 58°F | Light Rain | 8 to 12 mph S | 98% |
| Thursday | 66°F | Light Rain Likely | 6 to 10 mph SW | 72% |
| Thursday Night | 48°F | Mostly Cloudy | 2 to 6 mph SW | 4% |
| Friday | 59°F | Partly Sunny | 2 to 6 mph SW | 13% |
| Friday Night | 42°F | Chance Light Rain | 3 to 8 mph W | 42% |
| Saturday | 47°F | Chance Light Rain | 8 to 12 mph W | 43% |
| Saturday Night | 37°F | Chance Light Rain | 13 mph W | 37% |
| Sunday | 49°F | Slight Chance Light Rain | 13 mph W | 17% |
| Sunday Night | 35°F | Partly Cloudy | 13 mph W | 10% |
| Monday | 49°F | Slight Chance Light Rain | 14 mph W | 17% |
| Monday Night | 36°F | Slight Chance Light Rain then Partly Cloudy | 12 mph W | 17% |
| Tuesday | 54°F | Mostly Sunny | 12 to 15 mph W | 6% |
| Tuesday Night | 36°F | Partly Cloudy | 6 to 12 mph W | 4% |
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 Nov 4, 2026.