National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair with Haze

72°F

22°C

Humidity NA
Wind Speed Calm
Barometer 29.97 in (1015.6 mb)
Dewpoint N/A
Visibility 4.00 mi
Last update 18 Aug 12:56 am EDT
Extended Forecast for

Boyds MD

  • Overnight

    Overnight: Mostly cloudy, with a low around 69. North wind 3 to 5 mph.

    Low: 69 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers between 2pm and 3pm. Mostly cloudy, with a high near 75. Northeast wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 75 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: Cloudy, with a low around 65. Northeast wind 5 to 7 mph.

    Low: 65 °F

    Cloudy

  • Tuesday

    Tuesday: A slight chance of showers between 8am and 2pm. Mostly cloudy, with a high near 74. East wind around 6 mph. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. East wind around 6 mph becoming calm after midnight. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 20%.

    High: 81 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 69. North wind 3 to 5 mph.
Monday
A slight chance of showers between 2pm and 3pm. Mostly cloudy, with a high near 75. Northeast wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Monday Night
Cloudy, with a low around 65. Northeast wind 5 to 7 mph.
Tuesday
A slight chance of showers between 8am and 2pm. Mostly cloudy, with a high near 74. East wind around 6 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. East wind around 6 mph becoming calm after midnight. Chance of precipitation is 20%.
Wednesday
A slight chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 64.
Friday
Mostly sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 66.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
A chance of showers. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 86. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Boyds MD
 39.16°N 77.29°W (Elev. 449 ft)
Last Update:
1:30 am EDT Aug 18, 2025
Forecast Valid:
1am EDT Aug 18, 2025-6pm EDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation