Mifflintown, PA Weather & Growing Conditions
Tonight
52°F
Mostly Clear then Patchy Fog
Patchy fog between 1am and 5am. Mostly clear, with a low around 52. Northwest wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Clear then Patchy Fog | 3 mph NW | 0% |
| Saturday | 74°F | Areas Of Fog then Mostly Sunny | 2 mph E | 3% |
| Saturday Night | 63°F | Mostly Cloudy then Rain Showers Likely | 1 to 5 mph SE | 61% |
| Sunday | 74°F | Showers And Thunderstorms | 3 mph S | 98% |
| Sunday Night | 57°F | Showers And Thunderstorms | 1 to 5 mph NW | 92% |
| Monday | 68°F | Chance Rain Showers | 5 mph NE | 32% |
| Monday Night | 54°F | Rain Showers Likely | 3 to 8 mph NE | 61% |
| Tuesday | 61°F | Rain Showers Likely | 5 to 8 mph E | 64% |
| Tuesday Night | 50°F | Rain Showers Likely | 8 mph E | 64% |
| Wednesday | 59°F | Chance Rain Showers | 3 to 8 mph E | 53% |
| Wednesday Night | 50°F | Chance Showers And Thunderstorms | 6 mph NE | 51% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 2 to 6 mph NE | 50% |
| Thursday Night | 51°F | Chance Showers And Thunderstorms | 2 mph NE | 39% |
| Friday | 69°F | Slight Chance Rain Showers then Partly Sunny | 3 mph N | 21% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mifflintown, PA
Last spring frost
Apr 21
First fall frost
Oct 24
Growing season
185 days
Hardiness zone
7a
Explore more for Mifflintown, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Lewistown, Pa (9.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.