Lewistown, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewistown, a town in Lewis County, Missouri.
Tonight
72°F
Partly Cloudy
Partly cloudy, with a low around 72. Southeast wind around 6 mph.
7-day forecast for Lewistown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Partly Cloudy | 6 mph SE | 9% |
| Saturday | 91°F | Partly Sunny | 5 to 8 mph SW | 7% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 3 mph W | 48% |
| Sunday | 79°F | Showers And Thunderstorms Likely | 3 to 7 mph N | 64% |
| Sunday Night | 61°F | Showers And Thunderstorms Likely | 8 mph NE | 72% |
| Monday | 67°F | Showers And Thunderstorms Likely | 9 mph NE | 72% |
| Monday Night | 56°F | Chance Rain Showers | 8 mph NE | 47% |
| Tuesday | 64°F | Slight Chance Rain Showers then Mostly Cloudy | 9 mph NE | 22% |
| Tuesday Night | 50°F | Mostly Cloudy | 6 mph N | 5% |
| Wednesday | 68°F | Mostly Sunny | 6 mph NE | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 3 mph NE | 1% |
| Thursday | 70°F | Partly Sunny | 3 mph NE | 5% |
| Thursday Night | 56°F | Mostly Cloudy | 2 mph NE | 7% |
| Friday | 71°F | Mostly Sunny | 5 mph NE | 7% |
Forecast source: National Weather Service (api.weather.gov) for Lewistown (40.085, -91.813). Updated through the day.
Growing snapshot for Lewistown
Last spring frost
Apr 17
First fall frost
Oct 19
Growing season
184 days
Hardiness zone
6a
More local growing data for Lewistown: nearby ZIP 63452 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Steffenville, Mo (10.2 mi from Lewistown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.