Harman US

Houghton, IA Weather & Growing Conditions

Overnight
50°F
Mostly Cloudy
Mostly cloudy. Low around 50, with temperatures rising to around 52 overnight. West wind around 10 mph, with gusts as high as 20 mph.

7-day forecast

WhenTempForecastWindPrecip
Overnight 50°F Mostly Cloudy 10 mph W 8%
Wednesday 53°F Slight Chance Rain Showers then Mostly Cloudy 10 to 15 mph W 17%
Wednesday Night 45°F Mostly Cloudy 10 mph SW 5%
Thursday 55°F Chance Rain Showers 5 to 10 mph W 53%
Thursday Night 42°F Slight Chance Rain Showers then Mostly Cloudy 5 mph NW 20%
Friday 50°F Partly Sunny 5 to 10 mph N 4%
Friday Night 31°F Partly Cloudy 0 to 5 mph N 0%
Saturday 52°F Mostly Sunny 0 to 5 mph NW 0%
Saturday Night 34°F Mostly Clear 0 to 5 mph W 1%
Sunday 58°F Sunny 5 mph W 1%
Sunday Night 36°F Clear 0 mph 0%
Monday 64°F Sunny 0 to 5 mph SW 0%
Monday Night 41°F Clear 0 to 5 mph W 0%
Tuesday 64°F Sunny 0 to 5 mph NW 0%

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

Growing snapshot for Houghton, IA

Last spring frost
Apr 17
First fall frost
Oct 22
Growing season
187 days
Hardiness zone
6a

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

Climate data from the nearest NOAA station, Donnellson, Ia (9.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.