Williamsport, PA Weather & Growing Conditions
Today
80°F
Sunny
Sunny, with a high near 80. East wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Sunny | 0 to 5 mph E | 0% |
| Tonight | 61°F | Partly Cloudy | 0 to 3 mph SE | 1% |
| Wednesday | 79°F | Chance Showers And Thunderstorms | 2 to 6 mph SE | 30% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 5 mph SE | 43% |
| Thursday | 83°F | Showers And Thunderstorms | 2 to 6 mph S | 83% |
| Thursday Night | 68°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 mph SW | 83% |
| Friday | 82°F | Showers And Thunderstorms | 2 to 6 mph W | 75% |
| Friday Night | 66°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 mph SW | 75% |
| Saturday | 81°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 6 mph SW | 42% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Mostly Cloudy | 5 mph W | 42% |
| Sunday | 84°F | Mostly Sunny | 3 to 7 mph W | 11% |
| Sunday Night | 67°F | Partly Cloudy | 6 mph SW | 11% |
| Monday | 84°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 9 mph W | 26% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 5 to 8 mph W | 26% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Williamsport, PA
Last spring frost
Apr 25
First fall frost
Oct 24
Growing season
181 days
Hardiness zone
6b
Explore more for Williamsport, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Williamsport 2, Pa (6.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.