Little Sioux, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Little Sioux, a city in Harrison County, Iowa.
Overnight
67°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy. Low around 67, with temperatures rising to around 70 overnight. North northwest wind around 6 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Little Sioux
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 67°F | Slight Chance Showers And Thunderstorms | 6 mph NNW | 19% |
| Tuesday | 75°F | Slight Chance Showers And Thunderstorms then Patchy Smoke | 8 to 13 mph N | 58% |
| Tuesday Night | 59°F | Patchy Smoke | 3 to 12 mph NNE | 67% |
| Wednesday | 74°F | Patchy Smoke | 6 mph ENE | 37% |
| Wednesday Night | 55°F | Mostly Clear | 1 to 5 mph SE | 2% |
| Thursday | 80°F | Sunny | 1 to 7 mph SE | 1% |
| Thursday Night | 63°F | Mostly Clear | 7 mph SSE | 4% |
| Friday | 86°F | Sunny | 5 to 10 mph S | 4% |
| Friday Night | 68°F | Mostly Clear | 6 to 9 mph S | 7% |
| Saturday | 91°F | Sunny | 5 to 16 mph S | 3% |
| Saturday Night | 71°F | Mostly Clear | 10 to 16 mph S | 10% |
| Sunday | 91°F | Mostly Sunny | 9 to 13 mph SSE | 7% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms | 14 mph SSE | 18% |
| Monday | 91°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph SSE | 18% |
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
Nearby towns & communities
California Junction
Dunlap
Logan
Loveland
Magnolia
Missouri Valley
Modale
Mondamin
Persia
Pisgah
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 Aug 4, 2026.