Gratz, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gratz, a borough in Dauphin County, Pennsylvania.
This Afternoon
68°F
Partly Sunny
Partly sunny, with a high near 68. Southeast wind around 2 mph.
7-day forecast for Gratz
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Partly Sunny | 2 mph SE | 2% |
| Tonight | 49°F | Patchy Fog | 2 mph SE | 2% |
| Wednesday | 72°F | Patchy Fog then Mostly Sunny | 1 to 8 mph SE | 2% |
| Wednesday Night | 59°F | Mostly Cloudy then Rain Showers | 7 mph S | 75% |
| Thursday | 70°F | Rain Showers | 3 to 7 mph S | 87% |
| Thursday Night | 56°F | Chance Rain Showers | 0 to 3 mph S | 46% |
| Friday | 67°F | Chance Rain Showers | 2 mph NW | 46% |
| Friday Night | 46°F | Chance Rain Showers | 1 mph NW | 46% |
| Saturday | 61°F | Slight Chance Rain Showers | 1 to 7 mph NW | 17% |
| Saturday Night | 37°F | Partly Cloudy | 5 mph NW | 13% |
| Sunday | 58°F | Mostly Sunny | 2 to 6 mph W | 9% |
| Sunday Night | 36°F | Slight Chance Rain Showers | 3 mph W | 18% |
| Monday | 58°F | Slight Chance Rain Showers | 5 to 9 mph NW | 24% |
| Monday Night | 35°F | Slight Chance Rain Showers | 2 to 6 mph W | 22% |
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
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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 Nov 4, 2026.