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Newton Hamilton, PA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Newton Hamilton, a borough in Mifflin County, Pennsylvania.

Tonight
63°F
Rain Showers Likely
Rain showers likely. Mostly cloudy, with a low around 63. East wind 1 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Newton Hamilton

WhenTempForecastWindPrecip
Tonight 63°F Rain Showers Likely 1 to 5 mph E 58%
Sunday 80°F Rain Showers 5 mph S 97%
Sunday Night 54°F Showers And Thunderstorms then Mostly Cloudy 3 mph NW 88%
Monday 72°F Partly Sunny then Chance Rain Showers 3 mph NE 31%
Monday Night 53°F Rain Showers Likely 5 mph NE 65%
Tuesday 64°F Rain Showers Likely 5 mph E 69%
Tuesday Night 50°F Rain Showers Likely 6 mph E 57%
Wednesday 60°F Chance Rain Showers 6 mph E 53%
Wednesday Night 49°F Chance Rain Showers 6 mph E 36%
Thursday 62°F Chance Rain Showers 6 mph NE 29%
Thursday Night 48°F Slight Chance Rain Showers 3 mph NE 24%
Friday 69°F Chance Rain Showers 3 mph N 26%
Friday Night 49°F Chance Rain Showers 3 mph N 26%
Saturday 72°F Slight Chance Rain Showers 5 mph N 17%

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 Sep 20, 2026.