Potosi, MO Weather & Growing Conditions
This Afternoon
60°F
Mostly Sunny
Mostly sunny, with a high near 60. West wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 60°F | Mostly Sunny | 5 mph W | 0% |
| Tonight | 42°F | Mostly Clear | 3 mph SW | 0% |
| Thursday | 64°F | Sunny | 6 mph W | 2% |
| Thursday Night | 42°F | Isolated Rain Showers then Mostly Cloudy | 2 mph NW | 15% |
| Friday | 56°F | Partly Sunny | 6 mph N | 11% |
| Friday Night | 31°F | Mostly Clear | 0 to 3 mph N | 0% |
| Saturday | 55°F | Mostly Sunny | 2 mph N | 0% |
| Saturday Night | 30°F | Mostly Clear | 0 mph | 0% |
| Sunday | 61°F | Sunny | 2 mph NW | 0% |
| Sunday Night | 33°F | Mostly Clear | 0 mph | 0% |
| Monday | 67°F | Sunny | 2 mph SW | 0% |
| Monday Night | 38°F | Clear | 2 mph SW | 1% |
| Tuesday | 68°F | Sunny | 2 mph W | 3% |
| Tuesday Night | 40°F | Mostly Clear | 0 mph | 4% |
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 Nov 5, 2026.