Merwin, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Merwin, a village in Bates County, Missouri.
Tonight
73°F
Mostly Clear
Mostly clear, with a low around 73. Heat index values as high as 99. South wind around 7 mph.
7-day forecast for Merwin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Mostly Clear | 7 mph S | 1% |
| Saturday | 97°F | Sunny | 7 to 12 mph SSW | 2% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 57% |
| Sunday | 87°F | Chance Showers And Thunderstorms | 5 mph WSW | 52% |
| Sunday Night | 64°F | Showers And Thunderstorms Likely | 5 mph NNE | 63% |
| Monday | 76°F | Showers And Thunderstorms Likely | 5 to 8 mph N | 61% |
| Monday Night | 56°F | Mostly Cloudy | 5 to 8 mph NNE | 12% |
| Tuesday | 71°F | Partly Sunny | 8 mph NNE | 4% |
| Tuesday Night | 51°F | Partly Cloudy | 3 to 7 mph NE | 3% |
| Wednesday | 74°F | Mostly Sunny | 6 mph NE | 0% |
| Wednesday Night | 54°F | Partly Cloudy | 5 mph ENE | 3% |
| Thursday | 76°F | Slight Chance Rain Showers | 5 mph ENE | 16% |
| Thursday Night | 57°F | Mostly Cloudy | 3 mph ENE | 11% |
| Friday | 76°F | Slight Chance Rain Showers | 5 mph E | 17% |
Forecast source: National Weather Service (api.weather.gov) for Merwin (38.404, -94.591). Updated through the day.
Growing snapshot for Merwin
Last spring frost
Apr 12
First fall frost
Oct 23
Growing season
192 days
Hardiness zone
6b
More local growing data for Merwin: nearby ZIP 64723 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Butler 4W, Mo (10.9 mi from Merwin). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.