Hamilton, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hamilton, a city in Caldwell County, Missouri.
Today
90°F
Mostly Sunny
Mostly sunny, with a high near 90. Heat index values as high as 96. Southwest wind 6 to 9 mph, with gusts as high as 18 mph.
7-day forecast for Hamilton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 90°F | Mostly Sunny | 6 to 9 mph SW | 14% |
| Tonight | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 to 6 mph W | 65% |
| Sunday | 76°F | Chance Showers And Thunderstorms | 2 to 6 mph N | 40% |
| Sunday Night | 60°F | Showers And Thunderstorms Likely | 6 mph NE | 66% |
| Monday | 65°F | Showers And Thunderstorms Likely | 7 mph NNE | 66% |
| Monday Night | 54°F | Slight Chance Rain Showers then Mostly Cloudy | 6 mph NNE | 17% |
| Tuesday | 63°F | Mostly Cloudy | 7 mph NE | 4% |
| Tuesday Night | 48°F | Mostly Cloudy | 5 mph NE | 3% |
| Wednesday | 66°F | Mostly Sunny | 3 mph ENE | 1% |
| Wednesday Night | 51°F | Partly Cloudy | 2 mph ENE | 6% |
| Thursday | 70°F | Slight Chance Rain Showers | 2 mph E | 15% |
| Thursday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 1 mph E | 21% |
| Friday | 71°F | Slight Chance Rain Showers | 5 mph E | 24% |
| Friday Night | 57°F | Mostly Cloudy | 2 mph E | 12% |
Forecast source: National Weather Service (api.weather.gov) for Hamilton (39.744, -94.002). Updated through the day.
Growing snapshot for Hamilton
Last spring frost
Apr 23
First fall frost
Oct 17
Growing season
175 days
Hardiness zone
6a
More local growing data for Hamilton: nearby ZIP 64644 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Hamilton 2W, Mo (3.4 mi from Hamilton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.