Potosi, MO Weather & Growing Conditions
Overnight
71°F
Mostly Clear
Mostly clear, with a low around 71. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 71°F | Mostly Clear | 5 mph SW | 1% |
| Saturday | 97°F | Mostly Sunny | 5 mph SW | 2% |
| Saturday Night | 71°F | Mostly Clear | 3 mph SW | 4% |
| Sunday | 94°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 mph W | 22% |
| Sunday Night | 66°F | Showers And Thunderstorms Likely | 2 mph N | 64% |
| Monday | 80°F | Showers And Thunderstorms Likely | 3 mph N | 68% |
| Monday Night | 58°F | Showers And Thunderstorms Likely | 5 mph N | 68% |
| Tuesday | 71°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 6 mph N | 22% |
| Tuesday Night | 52°F | Partly Cloudy | 1 to 6 mph N | 7% |
| Wednesday | 73°F | Mostly Sunny | 5 mph N | 2% |
| Wednesday Night | 52°F | Partly Cloudy | 0 to 3 mph N | 0% |
| Thursday | 75°F | Mostly Sunny | 3 mph N | 4% |
| Thursday Night | 54°F | Partly Cloudy | 2 mph NE | 5% |
| Friday | 75°F | Partly Sunny | 1 to 5 mph NE | 12% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Potosi, MO
Last spring frost
Apr 11
First fall frost
Oct 28
Growing season
198 days
Hardiness zone
6b
Explore more for Potosi, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Potosi 4 Sw, Mo (4.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.