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Great Mills, MD Marine Weather Forecast

This Afternoon - 96°F
Jul 03, 2026
7 mph SE
Sunny
Sunny, with a high near 96. Heat index values as high as 107. Southeast wind around 7 mph.
Tonight - 81°F
Jul 03, 2026
3 to 7 mph SW
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms between 9pm and midnight. Mostly clear, with a low around 81. Heat index values as high as 105. Southwest wind 3 to 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Independence Day - 97°F
Jul 04, 2026
2 to 8 mph NE
Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 5pm. Sunny, with a high near 97. Heat index values as high as 105. Northeast wind 2 to 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Saturday Night - 77°F
Jul 04, 2026
2 to 7 mph SW
Chance Showers And Thunderstorms then Mostly Cloudy
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 77. Heat index values as high as 100. Southwest wind 2 to 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunday - 90°F
Jul 05, 2026
1 to 8 mph S
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. South wind 1 to 8 mph. Chance of precipitation is 30%.
Sunday Night - 76°F
Jul 05, 2026
5 to 8 mph SE
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 76. Chance of precipitation is 50%.
Monday - 92°F
Jul 06, 2026
3 to 10 mph SE
Showers And Thunderstorms Likely
A slight chance of rain showers before 8am, then showers and thunderstorms likely. Partly sunny, with a high near 92. Chance of precipitation is 60%.
Monday Night - 75°F
Jul 06, 2026
5 to 10 mph SE
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.
Tuesday - 90°F
Jul 07, 2026
6 mph NW
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 50%.
Tuesday Night - 74°F
Jul 07, 2026
6 mph NE
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 50%.
Wednesday - 90°F
Jul 08, 2026
6 mph N
Slight Chance Rain Showers then Chance Showers And Thunderstorms
A slight chance of rain showers before 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
Wednesday Night - 74°F
Jul 08, 2026
6 mph SE
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly cloudy, with a low around 74. Chance of precipitation is 30%.
Thursday - 92°F
Jul 09, 2026
2 to 6 mph S
Slight Chance Rain Showers
A slight chance of rain showers. Mostly sunny, with a high near 92. Chance of precipitation is 20%.
Thursday Night - 76°F
Jul 09, 2026
6 mph S
Slight Chance Showers And Thunderstorms
A slight chance of rain showers before 8pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 76.

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