Blackwater, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blackwater, a city in Cooper County, Missouri.
This Afternoon
96°F
Sunny
Sunny, with a high near 96. Heat index values as high as 104. South southwest wind around 7 mph.
7-day forecast for Blackwater
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 96°F | Sunny | 7 mph SSW | 12% |
| Tonight | 74°F | Partly Cloudy | 2 to 6 mph S | 12% |
| Saturday | 100°F | Mostly Sunny | 5 to 12 mph SW | 2% |
| Saturday Night | 69°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 2 to 7 mph SW | 42% |
| Sunday | 88°F | Chance Showers And Thunderstorms | 5 mph WNW | 48% |
| Sunday Night | 63°F | Showers And Thunderstorms Likely | 6 mph NNE | 72% |
| Monday | 76°F | Showers And Thunderstorms Likely | 5 to 8 mph NNE | 72% |
| Monday Night | 56°F | Chance Showers And Thunderstorms | 5 to 8 mph NNE | 27% |
| Tuesday | 71°F | Mostly Cloudy | 8 mph NNE | 13% |
| Tuesday Night | 50°F | Mostly Cloudy | 2 to 7 mph NNE | 5% |
| Wednesday | 75°F | Mostly Sunny | 2 to 6 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 1 to 5 mph NE | 3% |
| Thursday | 77°F | Partly Sunny | 1 to 5 mph ENE | 7% |
| Thursday Night | 55°F | Partly Cloudy then Slight Chance Rain Showers | 3 mph ENE | 15% |
Forecast source: National Weather Service (api.weather.gov) for Blackwater (38.979, -92.992). Updated through the day.
Growing snapshot for Blackwater
Last spring frost
Apr 5
First fall frost
Oct 29
Growing season
206 days
Hardiness zone
6b
More local growing data for Blackwater: nearby ZIP 65322 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Boonville, Mo (11.1 mi from Blackwater). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.