Herndon, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Herndon, a borough in Snyder County, Pennsylvania.
Today
84°F
Sunny
Sunny, with a high near 84. Northeast wind around 1 mph.
7-day forecast for Herndon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 1 mph NE | 0% |
| Tonight | 65°F | Mostly Cloudy | 1 mph E | 5% |
| Wednesday | 82°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 3 mph SE | 30% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms then Patchy Fog | 2 mph SE | 58% |
| Thursday | 86°F | Patchy Fog then Showers And Thunderstorms | 0 to 5 mph S | 75% |
| Thursday Night | 71°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 mph W | 75% |
| Friday | 86°F | Partly Sunny then 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 SW | 73% |
| Saturday | 85°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 48% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 2 mph W | 48% |
| Sunday | 87°F | Mostly Sunny | 3 mph W | 11% |
| Sunday Night | 68°F | Partly Cloudy | 3 mph SW | 11% |
| Monday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 7 mph W | 21% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 mph W | 21% |
Forecast source: National Weather Service (api.weather.gov) for Herndon (40.712, -76.853). Updated through the day.
Growing snapshot for Herndon
Last spring frost
Apr 25
First fall frost
Oct 22
Growing season
178 days
Hardiness zone
6b
More local growing data for Herndon: nearby ZIP 17864 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Beaver Springs
Beavertown
Freeburg
Hummels Wharf
Kapp Heights
Kratzerville
Kreamer
Middleburg
Mount Pleasant Mills
Paxtonville
Penns Creek
Port Trevorton
Richfield
Selinsgrove
Shamokin Dam
Troxelville
Winfield
Climate data from the nearest NOAA station, Selinsgrove 2 S, Pa (5.9 mi from Herndon). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.