Smithville, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Smithville, a city in Clay County, Missouri.
This Afternoon
68°F
Rain Showers Likely
Rain showers likely. Mostly cloudy. High near 68, with temperatures falling to around 58 in the afternoon. West southwest wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Smithville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Rain Showers Likely | 15 mph WSW | 64% |
| Tonight | 46°F | Cloudy | 10 to 14 mph WNW | 13% |
| Wednesday | 57°F | Mostly Cloudy | 9 to 14 mph W | 6% |
| Wednesday Night | 39°F | Mostly Clear | 3 to 7 mph W | 3% |
| Thursday | 57°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 9 mph WNW | 16% |
| Thursday Night | 40°F | Mostly Cloudy | 7 mph NNW | 4% |
| Friday | 56°F | Partly Sunny | 6 mph N | 4% |
| Friday Night | 37°F | Mostly Cloudy | 0 to 3 mph N | 0% |
| Saturday | 59°F | Partly Sunny | 0 to 3 mph WNW | 2% |
| Saturday Night | 38°F | Mostly Clear | 2 mph WSW | 7% |
| Sunday | 63°F | Sunny | 5 mph W | 6% |
| Sunday Night | 40°F | Mostly Clear | 3 mph SW | 0% |
| Monday | 68°F | Sunny | 3 to 9 mph SW | 0% |
| Monday Night | 43°F | Mostly Clear | 2 to 6 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Smithville (39.397, -94.571). Updated through the day.
Growing snapshot for Smithville
Last spring frost
Apr 18
First fall frost
Oct 20
Growing season
183 days
Hardiness zone
6a
More local growing data for Smithville: nearby ZIP 64089 weather · frost dates · planting calendar · Missouri frost dates
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Climate data from the nearest NOAA station, Smithville Lake, Mo (0.8 mi from Smithville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.