Harman US

State Center, IA Weather & Growing Conditions

This Afternoon
78°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. High near 78, with temperatures falling to around 74 in the afternoon. West northwest wind around 8 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 78°F Chance Showers And Thunderstorms 8 mph WNW 37%
Tonight 60°F Chance Showers And Thunderstorms 7 to 10 mph N 51%
Sunday 64°F Chance Rain Showers then Chance Drizzle 14 mph NE 42%
Sunday Night 55°F Chance Drizzle then Chance Rain Showers 13 mph NE 53%
Monday 59°F Rain Showers 12 mph NE 80%
Monday Night 51°F Rain Showers 7 to 10 mph NE 77%
Tuesday 60°F Slight Chance Rain Showers then Partly Sunny 8 mph NE 20%
Tuesday Night 47°F Partly Cloudy 3 to 7 mph NE 4%
Wednesday 64°F Mostly Sunny 5 mph ENE 1%
Wednesday Night 51°F Partly Cloudy 3 mph E 6%
Thursday 66°F Slight Chance Rain Showers 3 mph SE 17%
Thursday Night 56°F Slight Chance Rain Showers 2 mph ESE 21%
Friday 68°F Slight Chance Rain Showers then Mostly Cloudy 5 mph E 20%
Friday Night 58°F Mostly Cloudy 3 mph E 8%

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 Sep 19, 2026.