Harman US

Washta, IA Weather & Growing Conditions

Overnight
39°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 39, with temperatures rising to around 43 overnight. Northwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Overnight 39°F Chance Rain Showers 10 to 15 mph NW 34%
Wednesday 48°F Chance Rain Showers 15 mph WNW 39%
Wednesday Night 38°F Chance Rain Showers 10 mph NW 39%
Thursday 48°F Mostly Cloudy 10 mph NNW 10%
Thursday Night 32°F Mostly Cloudy 0 to 5 mph N 0%
Friday 48°F Mostly Sunny 0 mph 0%
Friday Night 29°F Partly Cloudy 0 mph 0%
Saturday 52°F Mostly Sunny 0 to 5 mph SSW 1%
Saturday Night 33°F Mostly Clear 0 to 5 mph WSW 0%
Sunday 57°F Sunny 0 to 5 mph WSW 0%
Sunday Night 37°F Clear 5 mph SSW 0%
Monday 62°F Sunny 5 to 10 mph WSW 0%
Monday Night 38°F Mostly Clear 0 to 5 mph NW 0%
Tuesday 60°F Mostly Sunny 0 to 5 mph WNW 0%

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

Growing snapshot for Washta, IA

Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
162 days
Hardiness zone
5a

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

Climate data from the nearest NOAA station, Holstein, Ia (10.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.