Potosi, MO Weather & Growing Conditions
Today
88°F
Sunny
Sunny, with a high near 88. South wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 88°F | Sunny | 3 mph S | 0% |
| Tonight | 67°F | Mostly Clear | 1 to 5 mph SE | 0% |
| Wednesday | 91°F | Sunny | 3 mph S | 5% |
| Wednesday Night | 70°F | Partly Cloudy then Chance Showers And Thunderstorms | 3 mph S | 50% |
| Thursday | 88°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 mph S | 67% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms | 2 mph SW | 47% |
| Friday | 87°F | Chance Showers And Thunderstorms | 2 mph SW | 47% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 1 mph S | 46% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 2 mph SW | 30% |
| Saturday Night | 70°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 3 mph S | 16% |
| Sunday | 90°F | Sunny | 5 mph SW | 3% |
| Sunday Night | 72°F | Mostly Clear | 3 mph S | 3% |
| Monday | 92°F | Sunny | 5 mph SW | 3% |
| Monday Night | 73°F | Mostly Clear | 5 mph S | 5% |
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 Aug 4, 2026.