Millersburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Millersburg, a borough in Dauphin County, Pennsylvania.
Today
84°F
Areas Of Fog then Sunny
Areas of fog before 9am. Sunny, with a high near 84. Northeast wind around 2 mph.
7-day forecast for Millersburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Areas Of Fog then Sunny | 2 mph NE | 0% |
| Tonight | 64°F | Mostly Cloudy then Patchy Fog | 1 mph SE | 7% |
| Wednesday | 82°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 3 mph E | 32% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 3 mph SE | 60% |
| Thursday | 87°F | Areas Of Fog then Showers And Thunderstorms Likely | 0 to 5 mph S | 71% |
| Thursday Night | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 3 mph S | 71% |
| Friday | 87°F | Partly Sunny then Showers And Thunderstorms Likely | 0 to 3 mph SW | 71% |
| Friday Night | 68°F | Showers And Thunderstorms Likely | 2 mph SW | 71% |
| Saturday | 85°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 5 mph W | 48% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 3 mph W | 48% |
| Sunday | 87°F | Mostly Sunny | 3 mph W | 11% |
| Sunday Night | 69°F | Partly Cloudy | 3 mph SW | 11% |
| Monday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 7 mph W | 21% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 2 to 6 mph W | 21% |
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 Aug 4, 2026.