Little Sioux, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Little Sioux, a city in Harrison County, Iowa.
This Afternoon
49°F
Chance Rain Showers
A chance of rain showers before 3pm. Mostly cloudy, with a high near 49. West northwest wind around 14 mph, with gusts as high as 24 mph.
7-day forecast for Little Sioux
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 49°F | Chance Rain Showers | 14 mph WNW | 13% |
| Tonight | 39°F | Cloudy | 12 mph NW | 21% |
| Thursday | 50°F | Mostly Cloudy | 10 to 14 mph NNW | 13% |
| Thursday Night | 36°F | Mostly Cloudy | 5 to 8 mph N | 0% |
| Friday | 50°F | Mostly Sunny | 0 to 5 mph N | 1% |
| Friday Night | 32°F | Partly Cloudy | 2 mph ESE | 0% |
| Saturday | 55°F | Mostly Sunny | 5 mph S | 0% |
| Saturday Night | 35°F | Mostly Clear | 2 mph WSW | 0% |
| Sunday | 60°F | Sunny | 5 mph WSW | 0% |
| Sunday Night | 39°F | Clear | 6 mph S | 0% |
| Monday | 65°F | Sunny | 5 to 8 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 3 mph NW | 0% |
| Tuesday | 63°F | Mostly Sunny | 5 mph NNW | 0% |
| Tuesday Night | 43°F | Partly Cloudy | 2 mph ESE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Little Sioux (41.808, -96.027). Updated through the day.
Growing snapshot for Little Sioux
Last spring frost
May 1
First fall frost
Oct 3
Growing season
155 days
Hardiness zone
5a
More local growing data for Little Sioux: nearby ZIP 51545 weather · frost dates · planting calendar · Iowa frost dates
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River Sioux
Woodbine
Climate data from the nearest NOAA station, Little Sioux 2 Nw, Ia (2.5 mi from Little Sioux). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.