Millersburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Millersburg, a borough in Dauphin County, Pennsylvania.
Overnight
49°F
Patchy Fog
Patchy fog after 3am. Mostly clear, with a low around 49. Southeast wind around 2 mph.
7-day forecast for Millersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Patchy Fog | 2 mph SE | 0% |
| Wednesday | 73°F | Patchy Fog then Mostly Sunny | 0 to 8 mph SE | 1% |
| Wednesday Night | 59°F | Mostly Cloudy then Light Rain Likely | 7 mph SE | 74% |
| Thursday | 72°F | Light Rain | 2 to 8 mph S | 87% |
| Thursday Night | 55°F | Chance Light Rain then Chance Rain Showers | 2 mph SW | 42% |
| Friday | 68°F | Chance Rain Showers | 1 mph NW | 44% |
| Friday Night | 46°F | Chance Rain Showers | 2 mph NW | 44% |
| Saturday | 62°F | Slight Chance Rain Showers | 3 to 7 mph NW | 16% |
| Saturday Night | 38°F | Partly Cloudy | 7 mph NW | 10% |
| Sunday | 59°F | Mostly Sunny | 6 mph W | 8% |
| Sunday Night | 36°F | Slight Chance Rain Showers | 7 mph W | 18% |
| Monday | 59°F | Slight Chance Rain Showers | 6 to 10 mph W | 24% |
| Monday Night | 36°F | Slight Chance Rain Showers | 7 mph W | 22% |
| Tuesday | 62°F | Mostly Sunny | 6 to 9 mph W | 10% |
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 Nov 4, 2026.