Ionia, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ionia, a town in Pettis County, Missouri.
Today
90°F
Sunny
Sunny, with a high near 90. Heat index values as high as 94. South wind 2 to 7 mph.
7-day forecast for Ionia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Sunny | 2 to 7 mph S | 0% |
| Tonight | 72°F | Partly Cloudy | 1 to 5 mph SE | 4% |
| Wednesday | 90°F | Partly Sunny then Chance Showers And Thunderstorms | 6 mph S | 37% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms | 6 mph NE | 76% |
| Thursday | 86°F | Showers And Thunderstorms | 5 mph S | 76% |
| Thursday Night | 68°F | Partly Cloudy then Chance Showers And Thunderstorms | 3 mph SE | 27% |
| Friday | 87°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph SW | 27% |
| Friday Night | 70°F | Slight Chance Showers And Thunderstorms | 3 mph S | 23% |
| Saturday | 90°F | Slight Chance Showers And Thunderstorms then Sunny | 7 mph S | 23% |
| Saturday Night | 72°F | Mostly Clear | 7 mph S | 4% |
| Sunday | 91°F | Sunny | 8 to 12 mph SW | 1% |
| Sunday Night | 73°F | Mostly Clear | 8 mph S | 2% |
| Monday | 92°F | Sunny | 9 to 13 mph SW | 2% |
| Monday Night | 74°F | Mostly Clear | 8 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov) for Ionia (38.504, -93.324). Updated through the day.
Growing snapshot for Ionia
Last spring frost
Apr 13
First fall frost
Oct 23
Growing season
191 days
Hardiness zone
6b
More local growing data for Ionia: nearby ZIP 65335 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cole Camp 3Nw, Mo (4.2 mi from Ionia). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.