Castle Point, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Castle Point, a community in St. Louis County, Missouri.
This Afternoon
73°F
Rain
Rain and a slight chance of thunderstorms. Cloudy. High near 73, with temperatures falling to around 68 in the afternoon. South wind around 18 mph, with gusts as high as 29 mph. Chance of precipitation is 100%.
7-day forecast for Castle Point
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Rain | 18 mph S | 95% |
| Tonight | 55°F | Rain | 9 to 16 mph S | 93% |
| Wednesday | 64°F | Chance Rain Showers then Mostly Cloudy | 8 to 14 mph W | 10% |
| Wednesday Night | 47°F | Partly Cloudy | 7 mph SW | 0% |
| Thursday | 66°F | Sunny | 6 to 10 mph W | 1% |
| Thursday Night | 46°F | Mostly Cloudy | 6 mph NW | 9% |
| Friday | 59°F | Mostly Cloudy | 6 to 10 mph NW | 5% |
| Friday Night | 42°F | Mostly Cloudy | 2 to 7 mph N | 1% |
| Saturday | 57°F | Mostly Sunny | 5 mph NW | 0% |
| Saturday Night | 40°F | Partly Cloudy | 2 mph W | 0% |
| Sunday | 63°F | Sunny | 2 to 7 mph W | 9% |
| Sunday Night | 40°F | Mostly Clear | 5 mph W | 5% |
| Monday | 67°F | Sunny | 2 to 7 mph SW | 2% |
| Monday Night | 44°F | Mostly Clear | 5 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Castle Point (38.757, -90.249). Updated through the day.
Growing snapshot for Castle Point
Last spring frost
Apr 2
First fall frost
Nov 4
Growing season
215 days
Hardiness zone
7a
More local growing data for Castle Point: nearby ZIP 63136 weather · frost dates · planting calendar · Missouri frost dates
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Clarkson Valley
Clayton
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Country Club Hills
Country Life Acres
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Des Peres
Edmundson
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Climate data from the nearest NOAA station, St Louis Lambert Intl Ap, Mo (6.2 mi from Castle Point). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.