Missouri Valley, IA Weather & Growing Conditions
Today
77°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 9am, then a slight chance of showers and thunderstorms between 11am and 1pm. Partly sunny. High near 77, with temperatures falling to around 75 in the afternoon. North northwest wind 2 to 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Chance Showers And Thunderstorms | 2 to 8 mph NNW | 52% |
| Tonight | 61°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 9 mph N | 27% |
| Sunday | 64°F | Chance Rain Showers | 10 mph NNE | 39% |
| Sunday Night | 56°F | Chance Rain Showers | 8 mph NE | 37% |
| Monday | 60°F | Rain Showers Likely | 8 mph NE | 59% |
| Monday Night | 52°F | Chance Rain Showers then Mostly Cloudy | 3 to 7 mph NE | 46% |
| Tuesday | 61°F | Partly Sunny | 6 mph ENE | 8% |
| Tuesday Night | 48°F | Partly Cloudy | 5 mph E | 1% |
| Wednesday | 65°F | Mostly Sunny | 5 mph SE | 2% |
| Wednesday Night | 53°F | Partly Cloudy then Chance Rain Showers | 3 mph SE | 28% |
| Thursday | 65°F | Chance Rain Showers | 6 mph SE | 31% |
| Thursday Night | 57°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph SE | 24% |
| Friday | 67°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph SE | 24% |
| Friday Night | 58°F | Slight Chance Rain Showers | 6 mph SE | 20% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Missouri Valley, IA
Last spring frost
Apr 29
First fall frost
Oct 8
Growing season
162 days
Hardiness zone
5b
Explore more for Missouri Valley, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Logan, Ia (8.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.