Missouri Valley, IA Weather & Growing Conditions
Tonight
42°F
Rain Showers Likely
Rain showers likely before 1am. Cloudy. Low around 42, with temperatures rising to around 44 overnight. Northwest wind 14 to 17 mph, with gusts as high as 29 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 |
|---|---|---|---|---|
| Tonight | 42°F | Rain Showers Likely | 14 to 17 mph NW | 62% |
| Wednesday | 50°F | Chance Rain Showers | 10 to 14 mph WNW | 27% |
| Wednesday Night | 41°F | Mostly Cloudy then Slight Chance Rain Showers | 10 mph WNW | 19% |
| Thursday | 51°F | Chance Rain Showers | 8 to 12 mph NW | 35% |
| Thursday Night | 37°F | Mostly Cloudy | 3 to 7 mph NNW | 3% |
| Friday | 52°F | Partly Sunny | 3 mph N | 0% |
| Friday Night | 35°F | Mostly Cloudy | 1 mph SSE | 0% |
| Saturday | 58°F | Mostly Sunny | 3 mph SW | 3% |
| Saturday Night | 37°F | Mostly Clear | 2 mph W | 5% |
| Sunday | 63°F | Sunny | 5 mph WSW | 3% |
| Sunday Night | 40°F | Mostly Clear | 5 mph S | 0% |
| Monday | 66°F | Sunny | 5 to 9 mph WSW | 0% |
| Monday Night | 41°F | Mostly Clear | 5 mph NW | 0% |
| Tuesday | 64°F | Mostly Sunny | 5 mph ENE | 0% |
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 Nov 4, 2026.