Marriottsville, Maryland 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 80°F 27°C Heat Index: 82°F	Observed at: Marriottsville, MD	Elevation: 368 ft | 112 m
	Last Updated: July 27, 8:00 PM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 80°F | 27°C
	Pressure: 29.5 in | 999.1 mb	Dewpoint: 66°F | 19°C
	Humidity: 62%	Wind: SSW 3 mph | SSW 5 kph
	Feels Like: 84°F | 29°C	Visibility: 58.7 mi | 94.5 km
	Lat/Long: 39.33 | -76.87	Sunrise: 6:03 AM   Sunset: 8:24 PM

7 Day Graphical Forecast

Valid: 6:58 PM 7/29/2026

Today Overcast 85 |69 °F 30 |21 °C 16% Chance Precipitation Tuesday Heavy Showers 86 |70 °F 30 |21 °C 46% Chance Precipitation Wednesday Overcast 87 |67 °F 30 |20 °C 31% Chance Precipitation Thursday Overcast 82 |64 °F 28 |18 °C 18% Chance Precipitation Friday Overcast 84 |64 °F 29 |18 °C 7% Chance Precipitation Saturday Heavy Drizzle 86 |69 °F 30 |20 °C 9% Chance Precipitation Sunday Drizzle 74 |71 °F 23 |22 °C 48% Chance Precipitation

7 Hour Graphical Forecast

Valid: 6:58 PM 7/29/2026

6 PM Overcast 79 °F 31% Chance Precipitation

7 PM Partly Cloudy 79 °F 31% Chance Precipitation

8 PM Overcast 78 °F 31% Chance Precipitation

9 PM Overcast 76 °F 11% Chance Precipitation

10 PM Clear 72 °F 11% Chance Precipitation

11 PM Clear 69 °F 11% Chance Precipitation

12 AM Clear 67 °F 11% Chance Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index

7 Day & Night Weather Forecast for Marriottsville, MD - (Fahrenheit & Celsius) Valid: 6:58 PM 7/29/2026 Today Overcast with a high near 85°F [30°C]. WSW wind to around 7 mph [11 kph], with gusts to near 15 mph [25 kph]. Dewpoint near 66°F [19°C] with humidity of 92%. Pressure around 29.50 in [999.1 mb]. UV Index: 7.55. Chance of precipitation 16% with QPF of 0.00 in [0.0 mm]. Tonight Overcast with a low around 69°F [21°C]. WSW wind to around 7 mph [11 kph], with gusts to near 15 mph [25 kph]. Chance of precipitation 16% with QPF of 0.00 in [0.0 mm]. Tuesday Heavy Showers with a high near 86°F [30°C]. S wind to around 17 mph [28 kph], with gusts to near 27 mph [43 kph]. Dewpoint near 66°F [19°C] with humidity of 94%. Pressure around 29.50 in [999.1 mb]. UV Index: 6.25. Chance of precipitation 46% with QPF of 1.07 in [27.1 mm]. Tuesday Night Heavy Showers with a low around 70°F [21°C]. S wind to around 17 mph [28 kph], with gusts to near 27 mph [43 kph]. Chance of precipitation 46% with QPF of 1.07 in [27.1 mm]. Wednesday Overcast with a high near 87°F [30°C]. NW wind to around 12 mph [20 kph], with gusts to near 24 mph [39 kph]. Dewpoint near 66°F [19°C] with humidity of 92%. Pressure around 29.50 in [999.1 mb]. UV Index: 7.65. Chance of precipitation 31% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 67°F [20°C]. NW wind to around 12 mph [20 kph], with gusts to near 24 mph [39 kph]. Chance of precipitation 31% with QPF of 0.00 in [0.0 mm]. Thursday Overcast with a high near 82°F [28°C]. NNW wind to around 12 mph [19 kph], with gusts to near 25 mph [41 kph]. Dewpoint near 66°F [19°C] with humidity of 82%. Pressure around 29.50 in [999.1 mb]. UV Index: 6.85. Chance of precipitation 18% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 64°F [18°C]. NNW wind to around 12 mph [19 kph], with gusts to near 25 mph [41 kph]. Chance of precipitation 18% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 84°F [29°C]. NNW wind to around 7 mph [11 kph], with gusts to near 19 mph [31 kph]. Dewpoint near 66°F [19°C] with humidity of 88%. Pressure around 29.50 in [999.1 mb]. UV Index: 7.5. Chance of precipitation 7% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 64°F [18°C]. NNW wind to around 7 mph [11 kph], with gusts to near 19 mph [31 kph]. Chance of precipitation 7% with QPF of 0.00 in [0.0 mm]. Saturday Heavy Drizzle with a high near 86°F [30°C]. SSE wind to around 9 mph [15 kph], with gusts to near 23 mph [36 kph]. Dewpoint near 66°F [19°C] with humidity of 89%. Pressure around 29.50 in [999.1 mb]. UV Index: 5.15. Chance of precipitation 9% with QPF of 0.14 in [3.6 mm]. Saturday Night Heavy Drizzle with a low around 69°F [20°C]. SSE wind to around 9 mph [15 kph], with gusts to near 23 mph [36 kph]. Chance of precipitation 9% with QPF of 0.14 in [3.6 mm]. Sunday Drizzle with a high near 74°F [23°C]. ESE wind to around 11 mph [17 kph], with gusts to near 24 mph [38 kph]. Dewpoint near 66°F [19°C] with humidity of 93%. Pressure around 29.50 in [999.1 mb]. UV Index: 2.15. Chance of precipitation 48% with QPF of 0.18 in [4.5 mm]. Sunday Night Drizzle with a low around 71°F [22°C]. ESE wind to around 11 mph [17 kph], with gusts to near 24 mph [38 kph]. Chance of precipitation 48% with QPF of 0.18 in [4.5 mm].

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7 Day and Night - QPF Forecast for Marriottsville, MD

Today: 0.0 mm | 0.00 in

Tonight: 0.0 mm | 0.00 in

Tuesday: 27.1 mm | 1.07 in

Tuesday Night: 27.1 mm | 1.07 in

Wednesday: 0.0 mm | 0.00 in

Wednesday Night: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 3.6 mm | 0.14 in

Saturday Night: 3.6 mm | 0.14 in

Sunday: 4.5 mm | 0.18 in

Sunday Night: 4.5 mm | 0.18 in

7 Day and Night - Maximum Wind Speed Forecast for Marriottsville, MD

Today: WSW @ 11 kph | 7 mph

Tonight: WSW @ 11 kph | 7 mph

Tuesday: S @ 28 kph | 17 mph

Tuesday Night: S @ 28 kph | 17 mph

Wednesday: NW @ 20 kph | 12 mph

Wednesday Night: NW @ 20 kph | 12 mph

Thursday: NNW @ 19 kph | 12 mph

Thursday Night: NNW @ 19 kph | 12 mph

Friday: NNW @ 11 kph | 7 mph

Friday Night: NNW @ 11 kph | 7 mph

Saturday: SSE @ 15 kph | 9 mph

Saturday Night: SSE @ 15 kph | 9 mph

Sunday: ESE @ 17 kph | 11 mph

Sunday Night: ESE @ 17 kph | 11 mph

7 Day and Night - Maximum Humidity Forecast for Marriottsville, MD

Today: 92 %

Tonight: 92 %

Tuesday: 94 %

Tuesday Night: 94 %

Wednesday: 92 %

Wednesday Night: 92 %

Thursday: 82 %

Thursday Night: 82 %

Friday: 88 %

Friday Night: 88 %

Saturday: 89 %

Saturday Night: 89 %

Sunday: 93 %

Sunday Night: 93 %

7 Day and Night - Snowfall Totals Forecast for Marriottsville, MD

Today: 0.0 cm | 0.00 in

Tonight: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

Wednesday: 0.0 cm | 0.00 in

Wednesday Night: 0.0 cm | 0.00 in

Thursday: 0.0 cm | 0.00 in

Thursday Night: 0.0 cm | 0.00 in

Friday: 0.0 cm | 0.00 in

Friday Night: 0.0 cm | 0.00 in

Saturday: 0.0 cm | 0.00 in

Saturday Night: 0.0 cm | 0.00 in

Sunday: 0.0 cm | 0.00 in

Sunday Night: 0.0 cm | 0.00 in

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