Harman US

State Center, IA Weather & Growing Conditions

Today
81°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny. High near 81, with temperatures falling to around 77 in the afternoon. West wind 6 to 9 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 81°F Chance Showers And Thunderstorms 6 to 9 mph W 28%
Tonight 61°F Showers And Thunderstorms 6 to 9 mph NNE 90%
Wednesday 73°F Showers And Thunderstorms Likely 6 mph NE 56%
Wednesday Night 55°F Chance Rain Showers 5 mph NE 26%
Thursday 80°F Sunny 3 mph E 2%
Thursday Night 60°F Mostly Clear 3 mph SE 1%
Friday 83°F Sunny 2 to 8 mph SSE 8%
Friday Night 65°F Mostly Clear 7 mph SSE 13%
Saturday 87°F Sunny 5 to 8 mph S 13%
Saturday Night 70°F Mostly Clear then Slight Chance Showers And Thunderstorms 10 mph SSW 16%
Sunday 88°F Slight Chance Showers And Thunderstorms then Mostly Sunny 10 mph SSE 16%
Sunday Night 70°F Chance Showers And Thunderstorms 9 mph SSE 34%
Monday 87°F Chance Showers And Thunderstorms 8 to 12 mph S 34%
Monday Night 70°F Partly Cloudy then Chance Showers And Thunderstorms 10 mph E 29%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for State Center, IA

Last spring frost
Apr 24
First fall frost
Oct 12
Growing season
170 days
Hardiness zone
5a

Explore more for State Center, IA: full frost dates · planting calendar · Iowa frost dates

Climate data from the nearest NOAA station, Colo, Ia (7.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.