Lewistown, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewistown, a town in Lewis County, Missouri.
Tonight
50°F
Slight Chance Light Rain then Chance Rain Showers
A slight chance of rain before 7pm, then a chance of rain showers. Cloudy, with a low around 50. Southwest wind around 12 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
7-day forecast for Lewistown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Slight Chance Light Rain then Chance Rain Showers | 12 mph SW | 16% |
| Wednesday | 56°F | Chance Rain Showers then Cloudy | 10 to 14 mph W | 12% |
| Wednesday Night | 43°F | Mostly Cloudy | 8 mph SW | 1% |
| Thursday | 57°F | Partly Sunny | 7 to 10 mph W | 11% |
| Thursday Night | 42°F | Mostly Cloudy then Slight Chance T-storms | 7 mph NW | 22% |
| Friday | 54°F | Partly Sunny | 8 mph N | 1% |
| Friday Night | 36°F | Partly Cloudy | 1 to 5 mph N | 1% |
| Saturday | 55°F | Mostly Sunny | 1 to 5 mph NW | 1% |
| Saturday Night | 36°F | Mostly Clear | 3 mph W | 4% |
| Sunday | 61°F | Sunny | 3 to 7 mph W | 10% |
| Sunday Night | 37°F | Mostly Clear | 5 mph W | 2% |
| Monday | 65°F | Sunny | 5 to 9 mph SW | 2% |
| Monday Night | 41°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 66°F | Sunny | 6 mph NW | 0% |
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 Nov 4, 2026.