Iatan, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Iatan, a village in Buchanan County, Missouri.
This Afternoon
93°F
Mostly Sunny
Mostly sunny, with a high near 93. Heat index values as high as 100. South southwest wind around 10 mph, with gusts as high as 18 mph.
7-day forecast for Iatan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 93°F | Mostly Sunny | 10 mph SSW | 2% |
| Tonight | 74°F | Partly Cloudy | 6 to 9 mph S | 8% |
| Saturday | 91°F | Slight Chance Showers And Thunderstorms | 7 to 10 mph SSW | 22% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 3 to 7 mph NW | 79% |
| Sunday | 77°F | Chance Showers And Thunderstorms | 3 to 7 mph N | 46% |
| Sunday Night | 61°F | Chance Showers And Thunderstorms | 7 mph NNE | 54% |
| Monday | 68°F | Chance Rain Showers | 6 to 9 mph NNE | 48% |
| Monday Night | 55°F | Mostly Cloudy | 5 to 9 mph NNE | 14% |
| Tuesday | 66°F | Mostly Cloudy | 7 mph NNE | 7% |
| Tuesday Night | 50°F | Mostly Cloudy | 6 mph NE | 5% |
| Wednesday | 69°F | Mostly Sunny | 5 mph ENE | 1% |
| Wednesday Night | 54°F | Mostly Cloudy | 3 mph E | 7% |
| Thursday | 71°F | Slight Chance Rain Showers | 3 mph E | 19% |
| Thursday Night | 57°F | Slight Chance Rain Showers | 3 mph E | 21% |
Forecast source: National Weather Service (api.weather.gov) for Iatan (39.479, -94.985). Updated through the day.
Growing snapshot for Iatan
Last spring frost
Apr 11
First fall frost
Oct 29
Growing season
199 days
Hardiness zone
6a
More local growing data for Iatan: nearby ZIP 64484 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Atchison, Ks (5.1 mi from Iatan). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.