Milroy, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Milroy, a community in Mifflin County, Pennsylvania.
Overnight
55°F
Patchy Fog
Patchy fog before 5am. Mostly clear, with a low around 55. Wind around 0 mph.
7-day forecast for Milroy
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Patchy Fog | 0 mph | 0% |
| Tuesday | 84°F | Patchy Fog then Sunny | 2 mph E | 0% |
| Tuesday Night | 63°F | Mostly Cloudy | 2 mph E | 6% |
| Wednesday | 82°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 3 mph SE | 40% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms then Areas Of Fog | 2 mph SE | 47% |
| Thursday | 87°F | Areas Of Fog then Showers And Thunderstorms | 0 to 3 mph S | 83% |
| Thursday Night | 68°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 mph SW | 83% |
| Friday | 86°F | Showers And Thunderstorms | 0 to 3 mph W | 78% |
| Friday Night | 66°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 mph W | 78% |
| Saturday | 84°F | Showers And Thunderstorms Likely | 0 to 5 mph W | 57% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 2 mph W | 57% |
| Sunday | 87°F | Mostly Sunny | 0 to 5 mph W | 13% |
| Sunday Night | 68°F | Partly Cloudy | 2 mph W | 13% |
| Monday | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 1 to 7 mph W | 26% |
Forecast source: National Weather Service (api.weather.gov) for Milroy (40.719, -77.590). Updated through the day.
Growing snapshot for Milroy
Last spring frost
Apr 21
First fall frost
Oct 24
Growing season
185 days
Hardiness zone
6b
More local growing data for Milroy: nearby ZIP 17084 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Lewistown, Pa (6.9 mi from Milroy). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.