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Prince Frederick, MD Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Prince Frederick, a community in Calvert County, Maryland.

This Afternoon
70°F
Sunny
Sunny. High near 70, with temperatures falling to around 64 in the afternoon. Southeast wind around 6 mph.

7-day forecast for Prince Frederick

WhenTempForecastWindPrecip
This Afternoon 70°F Sunny 6 mph SE 1%
Tonight 53°F Mostly Clear then Patchy Fog 6 mph S 2%
Wednesday 75°F Patchy Fog then Sunny 3 to 8 mph S 2%
Wednesday Night 62°F Mostly Cloudy 7 mph S 4%
Thursday 76°F Slight Chance Light Rain 6 to 9 mph S 23%
Thursday Night 63°F Light Rain 6 mph S 80%
Friday 70°F Rain 6 mph S 88%
Friday Night 52°F Rain 2 to 6 mph NW 83%
Saturday 66°F Mostly Sunny 6 to 10 mph NW 7%
Saturday Night 43°F Partly Cloudy 7 mph NW 7%
Sunday 61°F Mostly Sunny 3 to 8 mph NW 6%
Sunday Night 41°F Partly Cloudy then Slight Chance Light Rain 6 mph W 17%
Monday 62°F Slight Chance Light Rain then Mostly Sunny 7 to 12 mph W 17%
Monday Night 40°F Mostly Clear 6 mph W 9%

Forecast source: National Weather Service (api.weather.gov) for Prince Frederick (38.544, -76.588). Updated through the day.

Growing snapshot for Prince Frederick

Last spring frost
Apr 17
First fall frost
Oct 27
Growing season
195 days
Hardiness zone
7b

More local growing data for Prince Frederick: nearby ZIP 20678 weather · frost dates · planting calendar · Maryland frost dates

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Climate data from the nearest NOAA station, Mechanicsville 5 Ne, Md (7.4 mi from Prince Frederick). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.