Harman US

Alden, IA Weather & Growing Conditions

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

Today
77°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms before 4pm, then a slight chance of showers and thunderstorms. Mostly cloudy. High near 77, with temperatures falling to around 73 in the afternoon. West wind around 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for Alden

WhenTempForecastWindPrecip
Today 77°F Patchy Fog 8 mph W 47%
Tonight 59°F Chance Showers And Thunderstorms 10 mph N 25%
Sunday 65°F Slight Chance Rain Showers then Chance Drizzle 12 to 15 mph NE 27%
Sunday Night 52°F Chance Rain Showers 13 mph ENE 30%
Monday 61°F Chance Rain Showers 13 mph ENE 50%
Monday Night 47°F Chance Rain Showers 6 to 10 mph ENE 50%
Tuesday 60°F Mostly Sunny 8 mph ENE 12%
Tuesday Night 44°F Partly Cloudy 2 to 6 mph E 1%
Wednesday 65°F Sunny 5 mph E 1%
Wednesday Night 49°F Partly Cloudy 2 mph ESE 6%
Thursday 66°F Partly Sunny 3 mph ESE 14%
Thursday Night 52°F Mostly Cloudy 2 mph ESE 8%
Friday 69°F Partly Sunny 1 to 5 mph ESE 6%
Friday Night 54°F Mostly Cloudy 3 mph SE 10%

Forecast source: National Weather Service (api.weather.gov) for Alden (42.512, -93.380). Updated through the day.

Growing snapshot for Alden

Last spring frost
Apr 28
First fall frost
Oct 10
Growing season
164 days
Hardiness zone
5a

More local growing data for Alden: nearby ZIP 50006 weather · frost dates · planting calendar · Iowa frost dates

Nearby towns & communities

All Iowa locations ›

Climate data from the nearest NOAA station, Iowa Falls, Ia (7.6 mi from Alden). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.