Harman US

Osceola, IA Weather & Growing Conditions

This Afternoon
50°F
Cloudy
Cloudy. High near 50, with temperatures falling to around 48 in the afternoon. West wind around 13 mph, with gusts as high as 20 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 50°F Cloudy 13 mph W 9%
Tonight 42°F Cloudy then Slight Chance Rain Showers 12 mph W 21%
Thursday 51°F Chance Rain Showers then Cloudy 12 mph NW 25%
Thursday Night 38°F Mostly Cloudy 9 mph N 3%
Friday 48°F Partly Sunny 5 to 8 mph N 3%
Friday Night 29°F Partly Cloudy 3 mph NNE 0%
Saturday 52°F Mostly Sunny 1 to 5 mph SW 0%
Saturday Night 34°F Mostly Clear 5 mph WSW 0%
Sunday 60°F Sunny 5 mph W 0%
Sunday Night 38°F Clear 6 mph SW 0%
Monday 65°F Sunny 6 to 10 mph SW 0%
Monday Night 41°F Clear 3 to 7 mph WSW 0%
Tuesday 63°F Sunny 5 mph NNW 1%
Tuesday Night 42°F Partly Cloudy 3 mph N 2%

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

Growing snapshot for Osceola, IA

Last spring frost
Apr 29
First fall frost
Oct 9
Growing season
162 days
Hardiness zone
5b

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

Climate data from the nearest NOAA station, Osceola, Ia (1.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.