Harman US

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

WhenTempForecastWindPrecip
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.