Washington Boro, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Washington Boro, a community in Lancaster County, Pennsylvania.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. Northeast wind 1 to 5 mph.
7-day forecast for Washington Boro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 1 to 5 mph NE | 0% |
| Tonight | 70°F | Mostly Cloudy | 3 mph SE | 7% |
| Wednesday | 84°F | Showers And Thunderstorms Likely | 2 to 6 mph E | 70% |
| Wednesday Night | 74°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 7 mph SE | 63% |
| Thursday | 89°F | Partly Sunny then Showers And Thunderstorms Likely | 3 to 9 mph S | 63% |
| Thursday Night | 74°F | Showers And Thunderstorms Likely | 2 to 8 mph S | 63% |
| Friday | 88°F | Mostly Sunny then Showers And Thunderstorms Likely | 2 to 7 mph SW | 64% |
| Friday Night | 73°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 to 6 mph SW | 64% |
| Saturday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 7 mph W | 50% |
| Saturday Night | 72°F | Chance Showers And Thunderstorms | 2 to 7 mph SW | 50% |
| Sunday | 88°F | Mostly Sunny | 2 to 6 mph W | 14% |
| Sunday Night | 73°F | Partly Cloudy | 2 to 6 mph SW | 14% |
| Monday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 9 mph W | 21% |
| Monday Night | 73°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph W | 21% |
Forecast source: National Weather Service (api.weather.gov) for Washington Boro (40.007, -76.469). Updated through the day.
Growing snapshot for Washington Boro
Last spring frost
Apr 1
First fall frost
Nov 10
Growing season
221 days
Hardiness zone
7a
More local growing data for Washington Boro: nearby ZIP 17582 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Safe Harbor Dam, Pa (5.6 mi from Washington Boro). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.