Castillo de San Marcos National Monument, FL 7-Day Weather Forecast

Castillo de San Marcos National Monument Weather Forecast

Castillo de San Marcos National Monument, FL Weather Forecast Date: 122 AM EST Fri Mar 06 2026

Weather forecast for Castillo de San Marcos National Monument, FL

Tonight Lo: 61°F Lo: 16°C	Tonight... Mostly cloudy. Patchy fog. Lows in the lower 60s. Southeast winds around 5 mph.
Fri Hi: 79°FHi: 26°C Lo: 61°F Lo: 16°C	Friday... Mostly sunny. Areas of dense fog in the morning. A chance of showers in the afternoon. Highs in the upper 70s. Southeast winds 5 to 10 mph. Chance of rain 30%.
Sat Hi: 79°FHi: 26°C Lo: 61°F Lo: 16°C	Saturday... Mostly sunny. Patchy fog in the morning. A slight chance of showers in the afternoon. Highs in the upper 70s. Southeast winds 5 to 10 mph. Chance of rain 20%.
Sun Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C	Sunday... Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20%.
Mon Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C	Monday... Mostly sunny. Highs in the lower 80s.
Tue Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C	Tuesday... Sunny. Highs in the lower 80s.
Wed Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C	Wednesday... Partly cloudy. Highs in the lower 80s. Lows in the mid 60s.