Cainsville, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cainsville, a city in Mercer County, Missouri.
This Afternoon
86°F
Mostly Sunny
Mostly sunny, with a high near 86. Heat index values as high as 97. South southeast wind around 9 mph.
7-day forecast for Cainsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Mostly Sunny | 9 mph SSE | 4% |
| Tonight | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 7 mph SSE | 21% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 6 to 10 mph SSW | 33% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 mph N | 70% |
| Sunday | 73°F | Chance Showers And Thunderstorms | 5 to 10 mph NNE | 51% |
| Sunday Night | 60°F | Chance Showers And Thunderstorms | 10 mph NE | 51% |
| Monday | 64°F | Chance Rain Showers | 10 mph NE | 54% |
| Monday Night | 54°F | Chance Rain Showers | 9 mph NE | 48% |
| Tuesday | 61°F | Mostly Cloudy | 9 mph NE | 8% |
| Tuesday Night | 48°F | Mostly Cloudy | 3 to 7 mph NE | 3% |
| Wednesday | 65°F | Mostly Sunny | 6 mph ENE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 3 mph ENE | 4% |
| Thursday | 67°F | Partly Sunny | 5 mph E | 13% |
| Thursday Night | 55°F | Mostly Cloudy | 2 mph E | 14% |
Forecast source: National Weather Service (api.weather.gov) for Cainsville (40.440, -93.775). Updated through the day.
Growing snapshot for Cainsville
Last spring frost
Apr 25
First fall frost
Oct 15
Growing season
174 days
Hardiness zone
5b
More local growing data for Cainsville: nearby ZIP 64632 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Princeton, Mo (10.8 mi from Cainsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.