Gratz, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gratz, a borough in Dauphin County, Pennsylvania.
Today
84°F
Sunny
Sunny, with a high near 84. Northeast wind around 2 mph.
7-day forecast for Gratz
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Sunny | 2 mph NE | 0% |
| Tonight | 63°F | Mostly Cloudy | 2 mph SE | 5% |
| Wednesday | 82°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 1 to 5 mph E | 53% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 5 mph SE | 58% |
| Thursday | 87°F | Patchy Fog then Showers And Thunderstorms | 1 to 6 mph S | 77% |
| Thursday Night | 69°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 5 mph S | 77% |
| Friday | 86°F | Showers And Thunderstorms Likely | 0 to 5 mph W | 72% |
| Friday Night | 67°F | Showers And Thunderstorms Likely | 0 to 3 mph W | 72% |
| Saturday | 85°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 6 mph W | 50% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 0 to 3 mph W | 50% |
| Sunday | 86°F | Mostly Sunny | 0 to 5 mph W | 11% |
| Sunday Night | 68°F | Partly Cloudy | 0 to 3 mph W | 11% |
| Monday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 8 mph W | 21% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 1 to 6 mph W | 21% |
Forecast source: National Weather Service (api.weather.gov) for Gratz (40.607, -76.716). Updated through the day.
Growing snapshot for Gratz
Last spring frost
May 1
First fall frost
Oct 16
Growing season
168 days
Hardiness zone
6b
More local growing data for Gratz: nearby ZIP 17030 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Berrysburg
Bressler
Colonial Park
Elizabethville
Enhaut
Harrisburg
Hershey
Highspire
Hummelstown
Lawnton
Lenkerville
Linglestown
Lykens
Middletown
Millersburg
New Cumberland
Oberlin
Palmdale
Paxtang
Paxtonia
Penbrook
Pillow
Progress
Royalton
Rutherford
Skyline View
Steelton
Union Deposit
West Fairview
Wiconsico
Climate data from the nearest NOAA station, Dehart Dam, Pa (10.2 mi from Gratz). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.