Washington Boro, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Washington Boro, a community in Lancaster County, Pennsylvania.
Overnight
48°F
Partly Cloudy
Partly cloudy, with a low around 48. South wind around 2 mph.
7-day forecast for Washington Boro
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 48°F | Partly Cloudy | 2 mph S | 0% |
| Wednesday | 74°F | Patchy Fog then Mostly Sunny | 1 to 12 mph S | 1% |
| Wednesday Night | 62°F | Mostly Cloudy then Slight Chance Light Rain | 10 to 15 mph SE | 21% |
| Thursday | 73°F | Light Rain | 8 to 15 mph S | 75% |
| Thursday Night | 61°F | Light Rain Likely | 2 to 8 mph SW | 60% |
| Friday | 69°F | Light Rain Likely | 3 mph NW | 60% |
| Friday Night | 52°F | Chance Light Rain then Partly Cloudy | 2 to 7 mph NW | 29% |
| Saturday | 62°F | Mostly Sunny | 8 to 14 mph NW | 9% |
| Saturday Night | 47°F | Partly Cloudy | 13 mph W | 9% |
| Sunday | 60°F | Mostly Sunny | 13 mph NW | 4% |
| Sunday Night | 45°F | Mostly Clear | 12 mph W | 4% |
| Monday | 59°F | Sunny | 12 to 16 mph W | 4% |
| Monday Night | 43°F | Mostly Clear | 6 to 12 mph W | 4% |
| Tuesday | 63°F | Sunny | 7 to 14 mph W | 2% |
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 Nov 4, 2026.