Dearborn, MO Weather & Growing Conditions
This Afternoon
91°F
Sunny
Sunny, with a high near 91. Heat index values as high as 96. South southwest wind around 12 mph, with gusts as high as 18 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 91°F | Sunny | 12 mph SSW | 7% |
| Tonight | 67°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 8 mph W | 68% |
| Sunday | 77°F | Chance Showers And Thunderstorms | 6 to 9 mph NNE | 40% |
| Sunday Night | 61°F | Showers And Thunderstorms Likely | 6 to 9 mph N | 49% |
| Monday | 68°F | Rain Showers Likely | 7 to 10 mph N | 49% |
| Monday Night | 54°F | Chance Rain Showers then Mostly Cloudy | 9 mph NNE | 30% |
| Tuesday | 65°F | Partly Sunny | 9 mph NNE | 7% |
| Tuesday Night | 50°F | Partly Cloudy | 3 to 7 mph NE | 4% |
| Wednesday | 67°F | Mostly Sunny | 5 mph ENE | 0% |
| Wednesday Night | 53°F | Partly Cloudy | 5 mph E | 7% |
| Thursday | 73°F | Chance Rain Showers | 5 mph SE | 25% |
| Thursday Night | 59°F | Chance Rain Showers | 3 mph E | 30% |
| Friday | 76°F | Chance Rain Showers | 6 mph E | 33% |
| Friday Night | 61°F | Mostly Cloudy then Slight Chance Rain Showers | 5 mph E | 19% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Dearborn, MO
Last spring frost
Apr 18
First fall frost
Oct 20
Growing season
183 days
Hardiness zone
6a
Explore more for Dearborn, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Smithville Lake, Mo (14.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.