Lewistown, MO Weather & Growing Conditions
Today
89°F
Sunny
Sunny, with a high near 89. South wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Sunny | 7 mph S | 1% |
| Tonight | 69°F | Mostly Cloudy | 5 mph SE | 14% |
| Wednesday | 83°F | Chance Showers And Thunderstorms | 3 mph S | 65% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 3 mph NE | 84% |
| Thursday | 82°F | Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 3 mph E | 84% |
| Thursday Night | 65°F | Partly Cloudy | 2 mph SE | 8% |
| Friday | 85°F | Mostly Sunny | 1 mph S | 8% |
| Friday Night | 68°F | Chance Showers And Thunderstorms | 2 mph S | 27% |
| Saturday | 88°F | Slight Chance Showers And Thunderstorms then Sunny | 5 mph SW | 21% |
| Saturday Night | 72°F | Mostly Clear | 3 to 7 mph S | 6% |
| Sunday | 91°F | Sunny | 7 to 10 mph SW | 5% |
| Sunday Night | 72°F | Mostly Clear | 5 to 8 mph S | 13% |
| Monday | 91°F | Mostly Sunny | 7 to 12 mph SW | 13% |
| Monday Night | 73°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 8 mph SW | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lewistown, MO
Last spring frost
Apr 17
First fall frost
Oct 19
Growing season
184 days
Hardiness zone
6a
Explore more for Lewistown, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Steffenville, Mo (10.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.