Missouri Valley, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Missouri Valley, a city in Harrison County, Iowa.
Today
50°F
Chance Rain Showers then Mostly Cloudy
A chance of rain showers before noon. Mostly cloudy, with a high near 50. West northwest wind 10 to 14 mph, with gusts as high as 22 mph.
7-day forecast for Missouri Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 50°F | Chance Rain Showers then Mostly Cloudy | 10 to 14 mph WNW | 14% |
| Tonight | 41°F | Mostly Cloudy then Slight Chance Light Rain | 10 mph WNW | 17% |
| Thursday | 51°F | Slight Chance Light Rain then Mostly Cloudy | 8 to 12 mph NNW | 16% |
| Thursday Night | 37°F | Mostly Cloudy | 3 to 7 mph NNW | 0% |
| Friday | 51°F | Mostly Sunny | 0 to 3 mph N | 1% |
| Friday Night | 32°F | Partly Cloudy | 2 mph SE | 0% |
| Saturday | 55°F | Mostly Sunny | 5 mph SSW | 0% |
| Saturday Night | 36°F | Mostly Clear | 2 mph WSW | 0% |
| Sunday | 60°F | Sunny | 5 mph WSW | 0% |
| Sunday Night | 40°F | Clear | 5 mph S | 0% |
| Monday | 65°F | Sunny | 7 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 3 mph NW | 0% |
| Tuesday | 64°F | Mostly Sunny | 3 mph N | 0% |
| Tuesday Night | 44°F | Partly Cloudy | 2 mph ESE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Missouri Valley (41.559, -95.903). Updated through the day.
Growing snapshot for Missouri Valley
Last spring frost
Apr 29
First fall frost
Oct 8
Growing season
162 days
Hardiness zone
5b
More local growing data for Missouri Valley: nearby ZIP 51555 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
California Junction
Dunlap
Little Sioux
Logan
Loveland
Magnolia
Modale
Mondamin
Persia
Pisgah
River Sioux
Woodbine
Climate data from the nearest NOAA station, Logan, Ia (8.5 mi from Missouri Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.