Dearborn, MO Weather & Growing Conditions
Today
90°F
Mostly Sunny
Mostly sunny, with a high near 90. South wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Mostly Sunny | 6 mph S | 12% |
| Tonight | 69°F | Partly Cloudy then Chance Showers And Thunderstorms | 7 mph ENE | 31% |
| Wednesday | 82°F | Chance Showers And Thunderstorms | 9 mph NNE | 51% |
| Wednesday Night | 65°F | Showers And Thunderstorms Likely | 5 to 9 mph NNE | 69% |
| Thursday | 83°F | Showers And Thunderstorms Likely then Mostly Sunny | 5 mph ENE | 69% |
| Thursday Night | 67°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph ESE | 16% |
| Friday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 3 to 7 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). 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 Aug 4, 2026.