Brimson, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brimson, a village in Harrison County, Missouri.
Today
90°F
Mostly Sunny
Mostly sunny, with a high near 90. Heat index values as high as 95. South wind around 6 mph.
7-day forecast for Brimson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Mostly Sunny | 6 mph S | 12% |
| Tonight | 68°F | Chance Showers And Thunderstorms | 3 to 7 mph ENE | 43% |
| Wednesday | 80°F | Showers And Thunderstorms Likely | 8 mph NE | 70% |
| Wednesday Night | 64°F | Showers And Thunderstorms Likely | 3 to 7 mph NNE | 69% |
| Thursday | 83°F | Showers And Thunderstorms Likely then Mostly Sunny | 5 mph NE | 69% |
| Thursday Night | 64°F | Mostly Clear | 3 mph E | 7% |
| Friday | 87°F | Mostly Sunny | 2 to 6 mph SSE | 9% |
| Friday Night | 68°F | Mostly Clear | 5 mph SSE | 10% |
| Saturday | 90°F | Sunny | 3 to 9 mph S | 8% |
| Saturday Night | 73°F | Mostly Clear | 9 mph S | 8% |
| Sunday | 93°F | Sunny | 8 to 13 mph SSW | 7% |
| Sunday Night | 73°F | Partly Cloudy | 12 mph S | 9% |
| Monday | 94°F | Mostly Sunny | 9 to 15 mph SSW | 9% |
| Monday Night | 74°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 9 to 14 mph S | 17% |
Forecast source: National Weather Service (api.weather.gov) for Brimson (40.145, -93.738). Updated through the day.
Growing snapshot for Brimson
Last spring frost
Apr 20
First fall frost
Oct 16
Growing season
177 days
Hardiness zone
6a
More local growing data for Brimson: nearby ZIP 64642 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Spickard 7 W, Mo (8.3 mi from Brimson). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.