Ironton, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ironton, a city in Iron County, Missouri.
This Afternoon
69°F
Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 69, with temperatures falling to around 65 in the afternoon. South wind around 14 mph, with gusts as high as 31 mph. Chance of precipitation is 100%.
7-day forecast for Ironton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Rain | 14 mph S | 99% |
| Tonight | 48°F | Rain then Chance Rain Showers | 5 to 12 mph SW | 91% |
| Wednesday | 66°F | Partly Sunny | 7 mph W | 2% |
| Wednesday Night | 37°F | Mostly Clear | 3 mph SW | 0% |
| Thursday | 69°F | Sunny | 1 to 6 mph W | 1% |
| Thursday Night | 39°F | Mostly Cloudy | 2 mph NW | 9% |
| Friday | 60°F | Partly Sunny | 3 to 7 mph NW | 1% |
| Friday Night | 35°F | Mostly Cloudy | 3 mph N | 1% |
| Saturday | 58°F | Partly Sunny | 3 mph NW | 0% |
| Saturday Night | 32°F | Partly Cloudy | 1 mph NW | 1% |
| Sunday | 64°F | Sunny | 1 to 5 mph NW | 6% |
| Sunday Night | 33°F | Mostly Clear | 2 mph NW | 4% |
| Monday | 68°F | Sunny | 1 to 5 mph W | 1% |
| Monday Night | 37°F | Mostly Clear | 3 mph SW | 0% |
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 Nov 3, 2026.