Lewistown, MO Weather & Growing Conditions
Tonight
72°F
Partly Cloudy
Partly cloudy, with a low around 72. South wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Partly Cloudy | 8 mph S | 9% |
| Saturday | 91°F | Partly Sunny | 5 to 8 mph SW | 7% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 3 mph W | 47% |
| 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 | 46% |
| 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 | 54°F | Partly Cloudy | 3 mph NE | 1% |
| Thursday | 70°F | Partly Sunny | 3 mph NE | 5% |
| Thursday Night | 57°F | Mostly Cloudy | 2 mph NE | 7% |
| Friday | 71°F | Mostly Sunny | 5 mph NE | 7% |
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 Sep 19, 2026.