Millersburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Millersburg, a borough in Dauphin County, Pennsylvania.
Today
73°F
Partly Sunny
Partly sunny, with a high near 73. Southeast wind around 2 mph.
7-day forecast for Millersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Partly Sunny | 2 mph SE | 2% |
| Tonight | 59°F | Rain Showers | 1 to 9 mph SE | 80% |
| Sunday | 73°F | Rain Showers | 3 to 9 mph S | 92% |
| Sunday Night | 53°F | Showers And Thunderstorms | 2 to 9 mph NW | 91% |
| Monday | 68°F | Mostly Cloudy | 5 to 8 mph N | 14% |
| Monday Night | 49°F | Chance Rain Showers | 6 mph NE | 46% |
| Tuesday | 60°F | Chance Rain Showers | 6 mph E | 53% |
| Tuesday Night | 48°F | Chance Rain Showers | 5 to 10 mph NE | 46% |
| Wednesday | 60°F | Chance Rain Showers | 6 to 10 mph E | 41% |
| Wednesday Night | 48°F | Chance Rain Showers | 6 to 9 mph NE | 35% |
| Thursday | 61°F | Chance Rain Showers | 5 to 9 mph NE | 37% |
| Thursday Night | 48°F | Chance Rain Showers | 6 mph NE | 37% |
| Friday | 65°F | Chance Rain Showers | 6 mph N | 29% |
| Friday Night | 48°F | Slight Chance Rain Showers | 7 mph N | 23% |
Forecast source: National Weather Service (api.weather.gov) for Millersburg (40.543, -76.953). Updated through the day.
Growing snapshot for Millersburg
Last spring frost
May 1
First fall frost
Oct 16
Growing season
168 days
Hardiness zone
7a
More local growing data for Millersburg: nearby ZIP 17061 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Dehart Dam, Pa (10.7 mi from Millersburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.