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.
Tonight
75°F
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 75. Southeast wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Castle Point
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 75°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 mph SE | 18% |
| Saturday | 99°F | Mostly Sunny | 5 to 8 mph SW | 6% |
| Saturday Night | 76°F | Partly Cloudy | 6 mph SW | 3% |
| Sunday | 94°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 3 to 7 mph W | 24% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 8 mph N | 63% |
| Monday | 81°F | Rain Showers Likely | 9 mph N | 72% |
| Monday Night | 62°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 7 to 10 mph N | 72% |
| Tuesday | 73°F | Slight Chance Rain Showers then Mostly Cloudy | 12 mph N | 23% |
| Tuesday Night | 57°F | Mostly Cloudy | 6 to 12 mph N | 6% |
| Wednesday | 76°F | Mostly Sunny | 9 mph N | 2% |
| Wednesday Night | 57°F | Partly Cloudy | 3 to 8 mph N | 1% |
| Thursday | 76°F | Mostly Sunny | 5 to 8 mph N | 4% |
| Thursday Night | 60°F | Partly Cloudy | 3 to 8 mph NE | 3% |
| Friday | 77°F | Mostly Sunny | 7 mph N | 6% |
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
Nearby towns & communities
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Calverton Park
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Clarkson Valley
Clayton
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Country Club Hills
Country Life Acres
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Creve Coeur
Crystal Lake Park
Dellwood
Des Peres
Edmundson
Ellisville
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 Sep 19, 2026.