Dearborn, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dearborn, a city in Platte County, Missouri.
This Afternoon
93°F
Mostly Sunny
Mostly sunny, with a high near 93. Heat index values as high as 101. South southwest wind around 10 mph, with gusts as high as 18 mph.
7-day forecast for Dearborn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 93°F | Mostly Sunny | 10 mph SSW | 2% |
| Tonight | 74°F | Partly Cloudy | 6 to 10 mph SSW | 8% |
| Saturday | 91°F | Slight Chance Showers And Thunderstorms | 8 to 13 mph SSW | 21% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 7 mph NW | 77% |
| Sunday | 78°F | Chance Showers And Thunderstorms | 5 to 9 mph N | 43% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 6 to 9 mph NNE | 54% |
| Monday | 69°F | Chance Rain Showers | 10 mph NNE | 49% |
| Monday Night | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 6 to 10 mph NNE | 16% |
| Tuesday | 66°F | Mostly Cloudy | 9 mph NNE | 8% |
| Tuesday Night | 50°F | Mostly Cloudy | 3 to 8 mph NE | 6% |
| Wednesday | 69°F | Mostly Sunny | 6 mph ENE | 1% |
| Wednesday Night | 54°F | Partly Cloudy | 5 mph E | 6% |
| Thursday | 72°F | Slight Chance Rain Showers | 5 mph E | 17% |
| Thursday Night | 57°F | Slight Chance Rain Showers | 3 mph E | 20% |
Forecast source: National Weather Service (api.weather.gov) for Dearborn (39.525, -94.772). Updated through the day.
Growing snapshot for Dearborn
Last spring frost
Apr 18
First fall frost
Oct 20
Growing season
183 days
Hardiness zone
6a
More local growing data for Dearborn: nearby ZIP 64439 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Camden Point
Edgerton
Farley
Ferrelview
Houston Lake
Lake Waukomis
New Market
Northmoor
Parkville
Platte City
Platte Woods
Ridgely
Riverside
Tracy
Weatherby Lake
Climate data from the nearest NOAA station, Smithville Lake, Mo (14.3 mi from Dearborn). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.