Merwin, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Merwin, a village in Bates County, Missouri.
Today
93°F
Mostly Sunny
Mostly sunny, with a high near 93. Heat index values as high as 97. South wind around 6 mph.
7-day forecast for Merwin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Mostly Sunny | 6 mph S | 1% |
| Tonight | 72°F | Partly Cloudy | 5 mph SE | 12% |
| Wednesday | 91°F | Chance Showers And Thunderstorms | 3 to 7 mph S | 26% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms | 6 mph NNE | 63% |
| Thursday | 88°F | Showers And Thunderstorms Likely then Partly Sunny | 5 mph NE | 63% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms | 3 mph SE | 45% |
| Friday | 89°F | Chance Showers And Thunderstorms | 5 mph S | 45% |
| Friday Night | 70°F | Mostly Clear | 3 mph SSE | 12% |
| Saturday | 92°F | Sunny | 3 to 8 mph S | 12% |
| Saturday Night | 73°F | Mostly Clear | 5 to 8 mph S | 3% |
| Sunday | 93°F | Sunny | 8 to 12 mph SSW | 2% |
| Sunday Night | 74°F | Mostly Clear | 9 mph S | 0% |
| Monday | 94°F | Sunny | 9 to 13 mph SSW | 1% |
| Monday Night | 75°F | Mostly Clear | 10 mph S | 1% |
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 Aug 4, 2026.