Cape St. Claire, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cape St. Claire, a community in Anne Arundel County, Maryland.
Today
85°F
Partly Sunny
Partly sunny, with a high near 85. Northeast wind around 8 mph.
7-day forecast for Cape St. Claire
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Partly Sunny | 8 mph NE | 1% |
| Tonight | 73°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 6 mph E | 43% |
| Wednesday | 85°F | Showers And Thunderstorms Likely | 5 to 9 mph SE | 58% |
| Wednesday Night | 75°F | Chance Showers And Thunderstorms | 9 mph S | 44% |
| Thursday | 90°F | Mostly Sunny | 7 to 13 mph S | 14% |
| Thursday Night | 77°F | Slight Chance Showers And Thunderstorms | 7 to 12 mph S | 18% |
| Friday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 9 mph SW | 38% |
| Friday Night | 76°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 47% |
| Saturday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 5 to 8 mph SW | 46% |
| Saturday Night | 75°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 46% |
| Sunday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph SW | 19% |
| Sunday Night | 76°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 7 mph SW | 19% |
| Monday | 90°F | Mostly Sunny | 5 to 8 mph SW | 13% |
| Monday Night | 76°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 19% |
Forecast source: National Weather Service (api.weather.gov) for Cape St. Claire (39.044, -76.445). Updated through the day.
Growing snapshot for Cape St. Claire
Last spring frost
Mar 23
First fall frost
Nov 20
Growing season
241 days
Hardiness zone
8a
More local growing data for Cape St. Claire: nearby ZIP 21409 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Annapolis Naf, Md (2.8 mi from Cape St. Claire). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.