St. James, MD Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. James, a community in Washington County, Maryland.
This Afternoon
86°F
Partly Sunny
Partly sunny, with a high near 86. Southeast wind around 6 mph.
7-day forecast for St. James
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Partly Sunny | 6 mph SE | 0% |
| Tonight | 68°F | Mostly Cloudy then Chance Showers And Thunderstorms | 2 to 6 mph E | 29% |
| Wednesday | 85°F | Showers And Thunderstorms Likely | 2 to 7 mph E | 67% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms | 6 mph S | 43% |
| Thursday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 8 mph S | 53% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 1 to 6 mph S | 53% |
| Friday | 89°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 6 mph SW | 54% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 54% |
| Saturday | 88°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 6 mph W | 45% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 1 to 5 mph SW | 45% |
| Sunday | 89°F | Mostly Sunny | 1 to 6 mph W | 14% |
| Sunday Night | 70°F | Partly Cloudy | 1 to 5 mph SW | 14% |
| Monday | 91°F | Mostly Sunny | 1 to 9 mph W | 13% |
| Monday Night | 70°F | Partly Cloudy | 2 to 8 mph W | 13% |
Forecast source: National Weather Service (api.weather.gov) for St. James (39.574, -77.748). Updated through the day.
Growing snapshot for St. James
Last spring frost
Apr 11
First fall frost
Oct 28
Growing season
199 days
Hardiness zone
7a
More local growing data for St. James: nearby ZIP 21781 weather · frost dates · planting calendar · Maryland frost dates
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Climate data from the nearest NOAA station, Hagerstown 1 E, Md (5.8 mi from St. James). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.