Herndon, PA Weather & Growing Conditions
Today
83°F
Sunny
Sunny, with a high near 83. Northeast wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 1 mph NE | 0% |
| Tonight | 64°F | Mostly Cloudy then Patchy Fog | 1 mph E | 5% |
| Wednesday | 81°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 3 mph SE | 39% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms then Patchy Fog | 0 to 3 mph SE | 58% |
| Thursday | 85°F | Patchy Fog then Showers And Thunderstorms | 1 to 5 mph S | 76% |
| Thursday Night | 70°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 3 mph S | 76% |
| Friday | 85°F | Showers And Thunderstorms Likely | 0 to 3 mph W | 73% |
| Friday Night | 67°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 2 mph W | 73% |
| Saturday | 83°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 49% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 2 mph W | 49% |
| Sunday | 85°F | Mostly Sunny | 0 to 3 mph W | 11% |
| Sunday Night | 68°F | Partly Cloudy | 0 to 3 mph W | 11% |
| Monday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 7 mph W | 22% |
| Monday Night | 66°F | Slight Chance Showers And Thunderstorms | 1 to 6 mph W | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Herndon, PA
Last spring frost
Apr 25
First fall frost
Oct 22
Growing season
178 days
Hardiness zone
6b
Explore more for Herndon, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Selinsgrove 2 S, Pa (7.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.