Little Sioux, IA Weather & Growing Conditions
Today
75°F
Patchy Smoke
A slight chance of showers and thunderstorms before 7am, then patchy smoke and a chance of showers and thunderstorms between 7am and 3pm, then showers and thunderstorms likely between 3pm and 4pm, then patchy smoke and showers and thunderstorms likely. Mostly cloudy. High near 75, with temperatures falling to around 73 in the afternoon. North wind 8 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Patchy Smoke | 8 to 13 mph N | 61% |
| Tonight | 59°F | Patchy Smoke | 3 to 12 mph NNE | 65% |
| Wednesday | 74°F | Patchy Smoke | 6 mph ENE | 33% |
| Wednesday Night | 55°F | Mostly Clear | 1 to 5 mph SE | 2% |
| Thursday | 80°F | Sunny | 1 to 8 mph SSE | 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 | 8% |
| Saturday | 91°F | Sunny | 5 to 17 mph S | 3% |
| Saturday Night | 71°F | Mostly Clear | 10 to 17 mph S | 10% |
| Sunday | 91°F | Mostly Sunny | 9 to 13 mph SSE | 8% |
| Sunday Night | 71°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% |
| Monday Night | 72°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 10 to 16 mph ESE | 17% |
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 Aug 4, 2026.