Iatan, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Iatan, a village in Buchanan County, Missouri.
Overnight
68°F
Partly Cloudy
Partly cloudy, with a low around 68. Southeast wind around 5 mph.
7-day forecast for Iatan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Partly Cloudy | 5 mph SE | 0% |
| Tuesday | 90°F | Mostly Sunny | 5 mph SSE | 12% |
| Tuesday Night | 69°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 mph ENE | 31% |
| Wednesday | 82°F | Chance Showers And Thunderstorms | 7 mph NE | 47% |
| Wednesday Night | 65°F | Showers And Thunderstorms Likely | 3 to 7 mph NNE | 68% |
| Thursday | 83°F | Showers And Thunderstorms Likely then Mostly Sunny | 5 mph ENE | 68% |
| Thursday Night | 67°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SE | 20% |
| Friday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 2 to 6 mph SSE | 20% |
| Friday Night | 70°F | Mostly Clear | 5 mph S | 13% |
| Saturday | 91°F | Sunny | 3 to 9 mph S | 8% |
| Saturday Night | 74°F | Mostly Clear | 10 mph S | 1% |
| Sunday | 93°F | Sunny | 9 to 13 mph SSW | 1% |
| Sunday Night | 75°F | Mostly Clear | 13 mph S | 3% |
| Monday | 94°F | Mostly Sunny | 10 to 14 mph SSW | 3% |
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 Aug 4, 2026.