Gratz, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gratz, a borough in Dauphin County, Pennsylvania.
Overnight
50°F
Patchy Fog
Patchy fog. Partly cloudy, with a low around 50. Northeast wind around 3 mph.
7-day forecast for Gratz
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Patchy Fog | 3 mph NE | 0% |
| Saturday | 73°F | Patchy Fog then Partly Sunny | 3 mph E | 2% |
| Saturday Night | 57°F | Rain Showers | 3 to 9 mph SE | 80% |
| Sunday | 72°F | Rain Showers | 5 to 9 mph S | 95% |
| Sunday Night | 51°F | Showers And Thunderstorms | 5 to 8 mph NW | 92% |
| Monday | 68°F | Mostly Cloudy | 7 mph N | 14% |
| Monday Night | 47°F | Chance Rain Showers | 3 to 7 mph NE | 45% |
| Tuesday | 60°F | Chance Rain Showers | 7 mph E | 48% |
| Tuesday Night | 46°F | Chance Rain Showers | 5 to 8 mph E | 40% |
| Wednesday | 60°F | Chance Rain Showers | 8 mph E | 40% |
| Wednesday Night | 46°F | Chance Rain Showers | 7 mph E | 35% |
| Thursday | 61°F | Chance Rain Showers | 7 mph NE | 35% |
| Thursday Night | 46°F | Chance Rain Showers | 5 mph NE | 35% |
| Friday | 66°F | Chance Rain Showers | 3 to 7 mph N | 26% |
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 Sep 19, 2026.