Little Sioux, IA Weather & Growing Conditions
This Afternoon
75°F
Slight Chance Showers And Thunderstorms
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly cloudy. High near 75, with temperatures falling to around 72 in the afternoon. North northwest wind around 9 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Slight Chance Showers And Thunderstorms | 9 mph NNW | 17% |
| Tonight | 59°F | Cloudy | 10 mph N | 14% |
| Sunday | 63°F | Rain Showers Likely | 12 mph NNE | 57% |
| Sunday Night | 55°F | Rain Showers Likely | 6 to 9 mph NE | 73% |
| Monday | 58°F | Rain Showers | 9 mph NE | 79% |
| Monday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 3 to 8 mph NE | 29% |
| Tuesday | 61°F | Partly Sunny | 6 mph NE | 3% |
| Tuesday Night | 47°F | Partly Cloudy | 5 mph E | 1% |
| Wednesday | 65°F | Partly Sunny | 3 to 7 mph SE | 4% |
| Wednesday Night | 52°F | Mostly Cloudy then Chance Showers And Thunderstorms | 7 mph SE | 27% |
| Thursday | 67°F | Chance Showers And Thunderstorms | 6 to 9 mph SSE | 39% |
| Thursday Night | 56°F | Slight Chance Rain Showers then Mostly Cloudy | 6 mph SE | 18% |
| Friday | 69°F | Slight Chance Rain Showers | 3 to 7 mph ESE | 19% |
| Friday Night | 57°F | Mostly Cloudy then Chance Rain Showers | 7 mph SE | 28% |
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 Sep 19, 2026.