Storm Lake, IA Weather & Growing Conditions
Today
74°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 8am, then patchy smoke and a chance of showers and thunderstorms between 8am and 1pm, then patchy smoke and showers and thunderstorms likely between 1pm and 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then showers and thunderstorms likely. Mostly cloudy. High near 74, with temperatures falling to around 70 in the afternoon. North northeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Chance Showers And Thunderstorms | 5 to 10 mph NNE | 69% |
| Tonight | 56°F | Patchy Smoke | 0 to 5 mph N | 71% |
| Wednesday | 74°F | Partly Sunny | 0 to 5 mph NE | 5% |
| Wednesday Night | 53°F | Mostly Clear | 0 mph | 1% |
| Thursday | 81°F | Sunny | 0 to 10 mph S | 1% |
| Thursday Night | 61°F | Mostly Clear | 5 mph SSE | 4% |
| Friday | 86°F | Sunny | 5 to 10 mph SSW | 6% |
| Friday Night | 65°F | Mostly Clear | 5 to 10 mph S | 14% |
| Saturday | 90°F | Sunny | 5 to 15 mph S | 10% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 10 to 15 mph SE | 22% |
| Sunday | 89°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph SSE | 22% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 10 to 15 mph SE | 27% |
| Monday | 88°F | Chance Showers And Thunderstorms then Mostly Sunny | 10 to 15 mph ESE | 27% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 10 to 15 mph ENE | 30% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Storm Lake, IA
Last spring frost
Apr 25
First fall frost
Oct 13
Growing season
170 days
Hardiness zone
5a
Explore more for Storm Lake, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Storm Lake, Ia (1.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.