Ironton, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ironton, a city in Iron County, Missouri.
Today
88°F
Patchy Fog then Sunny
Patchy fog before 8am. Sunny, with a high near 88. Southeast wind around 2 mph.
7-day forecast for Ironton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Patchy Fog then Sunny | 2 mph SE | 0% |
| Tonight | 66°F | Mostly Clear | 2 mph S | 0% |
| Wednesday | 90°F | Sunny | 0 to 5 mph S | 2% |
| Wednesday Night | 70°F | Partly Cloudy then Chance Showers And Thunderstorms | 3 mph S | 32% |
| Thursday | 88°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph S | 57% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms | 0 to 3 mph S | 52% |
| Friday | 87°F | Chance Showers And Thunderstorms | 3 mph SW | 52% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 2 mph SW | 49% |
| Saturday | 88°F | Chance Showers And Thunderstorms | 3 mph SW | 28% |
| Saturday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 mph S | 17% |
| Sunday | 89°F | Sunny | 2 to 6 mph S | 3% |
| Sunday Night | 71°F | Mostly Clear | 5 mph S | 2% |
| Monday | 91°F | Sunny | 3 to 7 mph SW | 2% |
| Monday Night | 72°F | Mostly Clear | 6 mph S | 4% |
Forecast source: National Weather Service (api.weather.gov) for Ironton (37.596, -90.630). Updated through the day.
Growing snapshot for Ironton
Last spring frost
Apr 13
First fall frost
Oct 21
Growing season
191 days
Hardiness zone
6b
More local growing data for Ironton: nearby ZIP 63650 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Farmington, Mo (17.4 mi from Ironton). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.