Herndon, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Herndon, a borough in Snyder County, Pennsylvania.
Overnight
46°F
Patchy Fog
Patchy fog after 2am. Mostly clear, with a low around 46. Southeast wind around 2 mph.
7-day forecast for Herndon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Patchy Fog | 2 mph SE | 0% |
| Wednesday | 73°F | Patchy Fog then Mostly Sunny | 0 to 7 mph S | 1% |
| Wednesday Night | 58°F | Mostly Cloudy then Light Rain Likely | 7 mph SE | 74% |
| Thursday | 73°F | Light Rain | 2 to 8 mph S | 91% |
| Thursday Night | 55°F | Chance Light Rain then Chance Rain Showers | 1 mph W | 40% |
| Friday | 68°F | Chance Rain Showers | 0 mph | 43% |
| Friday Night | 45°F | Chance Rain Showers | 1 mph NW | 43% |
| Saturday | 62°F | Slight Chance Rain Showers | 2 to 6 mph NW | 18% |
| Saturday Night | 37°F | Partly Cloudy | 6 mph NW | 13% |
| Sunday | 60°F | Mostly Sunny | 5 mph W | 9% |
| Sunday Night | 35°F | Slight Chance Rain Showers | 5 mph W | 17% |
| Monday | 60°F | Slight Chance Rain Showers | 5 to 9 mph W | 24% |
| Monday Night | 35°F | Slight Chance Rain Showers | 6 mph SW | 22% |
| Tuesday | 62°F | Mostly Sunny | 5 to 10 mph SW | 10% |
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 Nov 4, 2026.