Union Deposit, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Union Deposit, a community in Dauphin County, Pennsylvania.
Tonight
53°F
Mostly Clear
Mostly clear, with a low around 53. North wind 5 to 8 mph.
7-day forecast for Union Deposit
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Mostly Clear | 5 to 8 mph N | 0% |
| Saturday | 76°F | Mostly Sunny | 6 mph E | 3% |
| Saturday Night | 62°F | Mostly Cloudy then Chance Rain Showers | 6 to 10 mph SE | 42% |
| Sunday | 76°F | Rain Showers | 7 to 12 mph S | 96% |
| Sunday Night | 60°F | Showers And Thunderstorms | 6 to 10 mph NW | 96% |
| Monday | 71°F | Chance Rain Showers | 10 mph NE | 35% |
| Monday Night | 55°F | Chance Rain Showers | 8 to 13 mph NE | 43% |
| Tuesday | 63°F | Chance Rain Showers | 13 mph E | 54% |
| Tuesday Night | 51°F | Chance Rain Showers | 14 mph NE | 54% |
| Wednesday | 61°F | Chance Rain Showers | 14 mph NE | 47% |
| Wednesday Night | 51°F | Chance Showers And Thunderstorms | 13 mph NE | 47% |
| Thursday | 64°F | Chance Showers And Thunderstorms | 13 mph NE | 42% |
| Thursday Night | 52°F | Chance Showers And Thunderstorms | 6 to 10 mph N | 38% |
| Friday | 68°F | Chance Rain Showers then Partly Sunny | 8 to 12 mph N | 25% |
Forecast source: National Weather Service (api.weather.gov) for Union Deposit (40.293, -76.681). Updated through the day.
Growing snapshot for Union Deposit
Last spring frost
Apr 9
First fall frost
Nov 2
Growing season
206 days
Hardiness zone
7a
More local growing data for Union Deposit: nearby ZIP 17036 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Middletown Harrisburg Intl Ap, Pa (5 mi from Union Deposit). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.