Little Sioux, IA Weather & Growing Conditions
Overnight
41°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 41, with temperatures rising to around 44 overnight. Northwest wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 41°F | Chance Rain Showers | 16 mph NW | 26% |
| Wednesday | 49°F | Chance Rain Showers | 12 to 15 mph WNW | 33% |
| Wednesday Night | 39°F | Chance Rain Showers | 12 mph WNW | 28% |
| Thursday | 50°F | Mostly Cloudy | 9 to 13 mph NNW | 14% |
| Thursday Night | 35°F | Mostly Cloudy | 3 to 8 mph N | 0% |
| Friday | 50°F | Mostly Sunny | 0 to 3 mph N | 1% |
| Friday Night | 31°F | Partly Cloudy | 2 mph SE | 0% |
| Saturday | 55°F | Mostly Sunny | 5 mph SSW | 0% |
| Saturday Night | 35°F | Mostly Clear | 2 mph WSW | 0% |
| Sunday | 60°F | Sunny | 5 mph WSW | 0% |
| Sunday Night | 39°F | Mostly Clear | 6 mph S | 0% |
| Monday | 64°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% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Little Sioux, IA
Last spring frost
May 1
First fall frost
Oct 3
Growing season
155 days
Hardiness zone
5a
Explore more for Little Sioux, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Little Sioux 2 Nw, Ia (2.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.