Union Deposit, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Union Deposit, a community in Dauphin County, Pennsylvania.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. East wind 0 to 5 mph.
7-day forecast for Union Deposit
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 0 to 5 mph E | 0% |
| Tonight | 66°F | Mostly Cloudy then Patchy Fog | 1 to 5 mph E | 5% |
| Wednesday | 83°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 6 mph E | 61% |
| Wednesday Night | 71°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 7 mph SE | 67% |
| Thursday | 89°F | Partly Sunny then Showers And Thunderstorms Likely | 2 to 8 mph S | 72% |
| Thursday Night | 71°F | Showers And Thunderstorms Likely | 1 to 7 mph S | 72% |
| Friday | 89°F | Mostly Sunny then Showers And Thunderstorms Likely | 1 to 7 mph SW | 68% |
| Friday Night | 70°F | Showers And Thunderstorms Likely | 0 to 6 mph SW | 68% |
| Saturday | 87°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 7 mph W | 52% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 1 to 5 mph W | 52% |
| Sunday | 88°F | Mostly Sunny | 1 to 6 mph W | 12% |
| Sunday Night | 71°F | Partly Cloudy | 2 to 6 mph SW | 12% |
| Monday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 10 mph W | 20% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms | 3 to 9 mph W | 20% |
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 Aug 4, 2026.