Herndon, PA Weather & Growing Conditions
This Afternoon
72°F
Mostly Sunny
Mostly sunny, with a high near 72. South wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Mostly Sunny | 8 mph S | 1% |
| Tonight | 58°F | Mostly Cloudy then Light Rain Likely | 7 mph SE | 71% |
| Thursday | 70°F | Light Rain | 3 to 8 mph S | 91% |
| Thursday Night | 52°F | Chance Light Rain | 2 mph SW | 33% |
| Friday | 66°F | Slight Chance Light Rain | 1 mph NW | 16% |
| Friday Night | 44°F | Partly Cloudy | 1 mph NW | 14% |
| Saturday | 58°F | Slight Chance Light Rain | 2 to 7 mph W | 20% |
| Saturday Night | 38°F | Slight Chance Light Rain | 6 mph W | 20% |
| Sunday | 57°F | Mostly Sunny | 3 to 7 mph W | 5% |
| Sunday Night | 35°F | Partly Cloudy | 5 mph W | 6% |
| Monday | 56°F | Mostly Sunny | 3 to 8 mph W | 6% |
| Monday Night | 34°F | Partly Cloudy | 5 mph W | 6% |
| Tuesday | 61°F | Mostly Sunny | 2 to 8 mph SW | 2% |
| Tuesday Night | 34°F | Mostly Clear | 5 mph W | 0% |
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 Nov 4, 2026.