Ionia, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ionia, a town in Pettis County, Missouri.
This Afternoon
71°F
Slight Chance Drizzle
A slight chance of drizzle after 5pm. Mostly cloudy. High near 71, with temperatures falling to around 62 in the afternoon. Southwest wind 13 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
7-day forecast for Ionia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Slight Chance Drizzle | 13 to 17 mph SW | 16% |
| Tonight | 47°F | Patchy Drizzle | 12 mph W | 20% |
| Wednesday | 58°F | Mostly Cloudy | 9 to 14 mph W | 6% |
| Wednesday Night | 39°F | Mostly Clear | 7 mph W | 0% |
| Thursday | 60°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 8 mph W | 15% |
| Thursday Night | 39°F | Mostly Cloudy | 5 mph NW | 6% |
| Friday | 56°F | Partly Sunny | 7 mph N | 3% |
| Friday Night | 37°F | Mostly Cloudy | 0 to 3 mph N | 0% |
| Saturday | 57°F | Partly Sunny | 0 to 3 mph NW | 1% |
| Saturday Night | 36°F | Partly Cloudy | 2 mph W | 4% |
| Sunday | 63°F | Sunny | 2 to 6 mph W | 7% |
| Sunday Night | 37°F | Mostly Clear | 5 mph SW | 1% |
| Monday | 67°F | Sunny | 5 to 9 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 5 mph SW | 0% |
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 Nov 3, 2026.