Portage Des Sioux, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Portage Des Sioux, a city in Jersey County, Missouri.
This Afternoon
98°F
Mostly Cloudy
Mostly cloudy, with a high near 98. Heat index values as high as 101. Southwest wind 5 to 8 mph.
7-day forecast for Portage Des Sioux
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Mostly Cloudy | 5 to 8 mph SW | 1% |
| Tonight | 73°F | Partly Cloudy | 5 mph S | 1% |
| Sunday | 93°F | Partly Sunny then Chance Showers And Thunderstorms | 2 to 9 mph W | 32% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 to 12 mph NE | 73% |
| Monday | 80°F | Showers And Thunderstorms Likely | 7 to 12 mph NE | 73% |
| Monday Night | 59°F | Chance Showers And Thunderstorms | 6 to 12 mph NE | 47% |
| Tuesday | 73°F | Chance Rain Showers then Mostly Cloudy | 9 to 14 mph N | 25% |
| Tuesday Night | 54°F | Mostly Cloudy | 6 to 13 mph N | 2% |
| Wednesday | 75°F | Mostly Sunny | 10 mph N | 0% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 10 mph N | 0% |
| Thursday | 77°F | Mostly Sunny | 3 to 7 mph N | 1% |
| Thursday Night | 58°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 6 mph NE | 15% |
| Friday | 80°F | Slight Chance Rain Showers | 3 to 8 mph NE | 18% |
| Friday Night | 58°F | Slight Chance Rain Showers then Partly Cloudy | 3 to 8 mph NE | 18% |
Forecast source: National Weather Service (api.weather.gov) for Portage Des Sioux (38.930, -90.341). Updated through the day.
Growing snapshot for Portage Des Sioux
Last spring frost
Apr 5
First fall frost
Oct 27
Growing season
203 days
Hardiness zone
6b
More local growing data for Portage Des Sioux: nearby ZIP 62028 weather · frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, St Charles Co Ap, Mo (4.4 mi from Portage Des Sioux). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.