Napoleon, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Napoleon, a city in Lafayette County, Missouri.
This Afternoon
94°F
Sunny
Sunny, with a high near 94. Heat index values as high as 101. South southwest wind around 8 mph.
7-day forecast for Napoleon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 94°F | Sunny | 8 mph SSW | 6% |
| Tonight | 75°F | Partly Cloudy | 3 to 7 mph SSW | 6% |
| Saturday | 96°F | Mostly Sunny | 6 to 10 mph SSW | 6% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 2 to 7 mph WSW | 61% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 1 to 5 mph NNW | 50% |
| Sunday Night | 62°F | Showers And Thunderstorms Likely | 6 mph NNE | 62% |
| Monday | 72°F | Showers And Thunderstorms Likely | 7 mph NNE | 62% |
| Monday Night | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 6 mph NNE | 17% |
| Tuesday | 68°F | Mostly Cloudy | 7 mph NNE | 7% |
| Tuesday Night | 50°F | Mostly Cloudy | 2 to 6 mph NE | 3% |
| Wednesday | 72°F | Mostly Sunny | 5 mph NE | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 2 mph NE | 4% |
| Thursday | 73°F | Slight Chance Rain Showers | 0 to 3 mph ENE | 16% |
| Thursday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 2 mph ENE | 15% |
Forecast source: National Weather Service (api.weather.gov) for Napoleon (39.128, -94.089). Updated through the day.
Growing snapshot for Napoleon
Last spring frost
Apr 19
First fall frost
Oct 18
Growing season
180 days
Hardiness zone
6a
More local growing data for Napoleon: nearby ZIP 64074 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Alma
Aullville
Bates City
Concordia
Corder
Dover
Higginsville
Lake Lafayette
Lexington
Mayview
Odessa
Waverly
Wellington
Climate data from the nearest NOAA station, Richmond 3S, Mo (12.2 mi from Napoleon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.