Harman US

Dexter, IA Weather & Growing Conditions

Today
81°F
Slight Chance Rain Showers
A slight chance of rain showers. Partly sunny. High near 81, with temperatures falling to around 77 in the afternoon. West northwest wind around 8 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 81°F Slight Chance Rain Showers 8 mph WNW 21%
Tonight 62°F Chance Showers And Thunderstorms 7 to 10 mph N 39%
Sunday 66°F Chance Rain Showers 9 to 13 mph NNE 44%
Sunday Night 56°F Showers And Thunderstorms Likely 12 mph NE 57%
Monday 60°F Rain Showers Likely 12 mph NE 59%
Monday Night 52°F Chance Rain Showers 7 to 10 mph NE 47%
Tuesday 60°F Partly Sunny 9 mph NE 11%
Tuesday Night 46°F Partly Cloudy 3 to 7 mph ENE 5%
Wednesday 64°F Mostly Sunny 5 mph E 2%
Wednesday Night 51°F Partly Cloudy 3 mph ESE 9%
Thursday 66°F Slight Chance Rain Showers 5 mph SE 24%
Thursday Night 55°F Mostly Cloudy 5 mph ESE 11%
Friday 67°F Partly Sunny 6 mph ESE 13%
Friday Night 56°F Mostly Cloudy 5 mph ESE 11%

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

Growing snapshot for Dexter, IA

Last spring frost
Apr 30
First fall frost
Oct 3
Growing season
157 days
Hardiness zone
5b

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

Climate data from the nearest NOAA station, Winterset 1S, Ia (14.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.