Harman US

Delta, PA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Delta, a borough in York County, Pennsylvania.

Overnight
56°F
Partly Cloudy
Partly cloudy, with a low around 56. North wind around 7 mph.

7-day forecast for Delta

WhenTempForecastWindPrecip
Overnight 56°F Partly Cloudy 7 mph N 0%
Saturday 76°F Mostly Sunny 6 mph NE 2%
Saturday Night 62°F Mostly Cloudy 5 to 8 mph SE 9%
Sunday 78°F Rain Showers Likely 8 to 12 mph S 74%
Sunday Night 62°F Showers And Thunderstorms Likely 5 to 9 mph NW 74%
Monday 71°F Chance Rain Showers 10 mph NE 40%
Monday Night 57°F Chance Rain Showers 7 to 12 mph NE 41%
Tuesday 64°F Chance Rain Showers 14 mph NE 50%
Tuesday Night 52°F Chance Rain Showers 14 mph NE 50%
Wednesday 61°F Chance Rain Showers 14 mph NE 42%
Wednesday Night 53°F Chance Showers And Thunderstorms 10 to 14 mph NE 44%
Thursday 63°F Chance Showers And Thunderstorms 13 mph NE 43%
Thursday Night 52°F Chance Showers And Thunderstorms 6 to 10 mph N 38%
Friday 68°F Chance Rain Showers 10 mph N 26%

Forecast source: National Weather Service (api.weather.gov) for Delta (39.727, -76.327). Updated through the day.

Growing snapshot for Delta

Last spring frost
Apr 3
First fall frost
Nov 6
Growing season
217 days
Hardiness zone
7a

More local growing data for Delta: nearby ZIP 17314 weather · frost dates · planting calendar · Pennsylvania frost dates

Nearby towns & communities

All Pennsylvania locations ›

Climate data from the nearest NOAA station, Conowingo Dam, Md (10.3 mi from Delta). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.