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Dardenne Prairie, MO Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Dardenne Prairie, a city in St. Charles County, Missouri.

This Afternoon
96°F
Mostly Sunny
Mostly sunny, with a high near 96. Heat index values as high as 101. Southwest wind around 5 mph.

7-day forecast for Dardenne Prairie

WhenTempForecastWindPrecip
This Afternoon 96°F Mostly Sunny 5 mph SW 1%
Tonight 72°F Partly Cloudy 1 to 5 mph SW 1%
Sunday 90°F Partly Sunny then Chance Showers And Thunderstorms 5 mph W 30%
Sunday Night 66°F Showers And Thunderstorms Likely 7 mph N 70%
Monday 77°F Showers And Thunderstorms Likely 7 mph NE 70%
Monday Night 59°F Chance Showers And Thunderstorms 7 mph N 53%
Tuesday 70°F Slight Chance Rain Showers then Mostly Cloudy 9 mph N 18%
Tuesday Night 53°F Mostly Cloudy 3 to 8 mph N 1%
Wednesday 72°F Mostly Sunny 7 mph N 0%
Wednesday Night 54°F Partly Cloudy 1 to 6 mph N 0%
Thursday 74°F Mostly Sunny 1 to 5 mph NE 1%
Thursday Night 57°F Mostly Cloudy then Slight Chance Rain Showers 3 mph NE 15%
Friday 77°F Slight Chance Rain Showers 1 to 5 mph NE 20%
Friday Night 58°F Slight Chance Rain Showers then Mostly Cloudy 3 mph NE 20%

Forecast source: National Weather Service (api.weather.gov) for Dardenne Prairie (38.741, -90.715). Updated through the day.

Growing snapshot for Dardenne Prairie

Last spring frost
Apr 10
First fall frost
Oct 26
Growing season
199 days
Hardiness zone
6b

More local growing data for Dardenne Prairie: nearby ZIP 63368 weather · frost dates · planting calendar · Missouri frost dates

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Climate data from the nearest NOAA station, Weldon Spring Nws, Mo (4.4 mi from Dardenne Prairie). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.