Cainsville, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cainsville, a city in Mercer County, Missouri.
Today
89°F
Mostly Sunny
Mostly sunny, with a high near 89. South wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Cainsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Mostly Sunny | 6 mph S | 13% |
| Tonight | 67°F | Chance Showers And Thunderstorms | 5 to 8 mph NE | 52% |
| Wednesday | 78°F | Showers And Thunderstorms Likely | 8 mph NE | 73% |
| Wednesday Night | 62°F | Showers And Thunderstorms Likely | 3 to 9 mph NE | 58% |
| Thursday | 83°F | Showers And Thunderstorms Likely then Mostly Sunny | 5 mph ENE | 58% |
| Thursday Night | 64°F | Mostly Clear | 3 mph E | 5% |
| Friday | 87°F | Mostly Sunny | 2 to 7 mph S | 7% |
| Friday Night | 68°F | Mostly Clear | 6 mph S | 11% |
| Saturday | 90°F | Sunny | 3 to 12 mph S | 6% |
| Saturday Night | 72°F | Mostly Clear | 12 mph S | 9% |
| Sunday | 93°F | Sunny | 8 to 15 mph SSW | 9% |
| Sunday Night | 73°F | Partly Cloudy | 9 to 14 mph S | 11% |
| Monday | 93°F | Mostly Sunny | 9 to 16 mph SSW | 11% |
| Monday Night | 73°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 9 to 14 mph SSW | 21% |
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 Aug 4, 2026.