Newton, IA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Newton, a city in Jasper County, Iowa.

This Afternoon

70°F

Showers And Thunderstorms

Showers and thunderstorms. Mostly cloudy. High near 70, with temperatures falling to around 64 in the afternoon. South southeast wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Newton

When	Temp	Forecast	Wind	Precip
This Afternoon	70°F	Showers And Thunderstorms	8 to 13 mph SSE	76%
Tonight	48°F	Showers And Thunderstorms Likely	7 to 13 mph W	59%
Wednesday	53°F	Chance Rain Showers	15 mph W	28%
Wednesday Night	44°F	Mostly Cloudy then Slight Chance Rain Showers	13 mph WSW	21%
Thursday	53°F	Rain Showers Likely	12 mph WNW	55%
Thursday Night	41°F	Mostly Cloudy	8 mph NNW	11%
Friday	52°F	Partly Sunny	5 to 8 mph N	5%
Friday Night	34°F	Partly Cloudy	0 to 3 mph NNW	0%
Saturday	56°F	Mostly Sunny	0 to 5 mph WSW	1%
Saturday Night	37°F	Mostly Clear	5 mph W	4%
Sunday	61°F	Sunny	7 mph WNW	5%
Sunday Night	39°F	Mostly Clear	6 mph SW	1%
Monday	65°F	Sunny	6 to 10 mph SW	0%
Monday Night	41°F	Mostly Clear	7 mph WNW	0%

Forecast source: National Weather Service (api.weather.gov) for Newton (41.696, -93.041). Updated through the day.

Growing snapshot for Newton

Last spring frost

Apr 22

First fall frost

Oct 17

Growing season

174 days

Hardiness zone

More local growing data for Newton: nearby ZIP 50208 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Newton, Ia (0.5 mi from Newton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.