Dearborn, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dearborn, a city in Platte County, Missouri.
Today
90°F
Mostly Sunny
Mostly sunny, with a high near 90. Heat index values as high as 96. South wind around 6 mph.
7-day forecast for Dearborn
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Mostly Sunny | 6 mph S | 12% |
| Tonight | 69°F | Partly Cloudy then Chance Showers And Thunderstorms | 3 to 7 mph ENE | 31% |
| Wednesday | 83°F | Chance Showers And Thunderstorms | 8 mph NE | 50% |
| Wednesday Night | 65°F | Showers And Thunderstorms Likely | 5 to 9 mph NNE | 68% |
| Thursday | 84°F | Showers And Thunderstorms Likely then Mostly Sunny | 5 mph ENE | 68% |
| Thursday Night | 67°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SE | 16% |
| Friday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 6 mph SSE | 16% |
| Friday Night | 70°F | Slight Chance Showers And Thunderstorms | 5 mph S | 15% |
| Saturday | 91°F | Sunny | 5 to 10 mph S | 9% |
| Saturday Night | 74°F | Mostly Clear | 9 to 13 mph S | 1% |
| Sunday | 93°F | Sunny | 15 mph SSW | 1% |
| Sunday Night | 75°F | Mostly Clear | 15 mph S | 4% |
| Monday | 94°F | Mostly Sunny | 16 mph SSW | 4% |
| Monday Night | 76°F | Partly Cloudy | 15 mph SSW | 6% |
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 Aug 4, 2026.