Newton Hamilton, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Newton Hamilton, a borough in Mifflin County, Pennsylvania.
Today
86°F
Sunny
Sunny, with a high near 86. East wind around 1 mph.
7-day forecast for Newton Hamilton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 1 mph E | 0% |
| Tonight | 66°F | Mostly Cloudy | 1 mph NE | 6% |
| Wednesday | 84°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 2 mph E | 33% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms then Patchy Fog | 1 mph SE | 43% |
| Thursday | 87°F | Patchy Fog then Showers And Thunderstorms | 2 mph S | 80% |
| Thursday Night | 71°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 mph SW | 80% |
| Friday | 86°F | Showers And Thunderstorms Likely | 2 mph W | 70% |
| Friday Night | 68°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 mph SW | 70% |
| Saturday | 87°F | Showers And Thunderstorms Likely | 0 to 3 mph W | 58% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 2 mph W | 58% |
| Sunday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 mph W | 15% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 mph SW | 15% |
| Monday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph W | 20% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 1 to 5 mph W | 20% |
Forecast source: National Weather Service (api.weather.gov) for Newton Hamilton (40.393, -77.835). Updated through the day.
Growing snapshot for Newton Hamilton
Last spring frost
Apr 19
First fall frost
Oct 28
Growing season
191 days
Hardiness zone
7a
More local growing data for Newton Hamilton: nearby ZIP 17075 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Raystown Lake 2, Pa (12.7 mi from Newton Hamilton). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.