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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.

Mostly Cloudy

70°F

21°C

Humidity NA
Wind Speed Calm
Barometer 29.96 in (1015.4 mb)
Dewpoint N/A
Visibility 9.00 mi
Last update 18 Aug 2:56 am EDT
Extended Forecast for

Carroll County Regional Airport/Jack B Poage Field MD

  • Overnight

    Overnight: Mostly cloudy, with a low around 67. Northwest wind around 5 mph.

    Low: 67 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers between 11am and 3pm. Mostly cloudy, with a high near 73. Northeast wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 73 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 63. East wind 5 to 7 mph.

    Low: 63 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers before 2pm. Mostly cloudy, with a high near 73. East wind around 7 mph. Chance of precipitation is 20%.

    High: 73 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 64. East wind around 6 mph becoming calm after midnight.

    Low: 64 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 20%.

    High: 79 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 81.

    High: 81 °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 67. Northwest wind around 5 mph.
Monday
A slight chance of showers between 11am and 3pm. Mostly cloudy, with a high near 73. Northeast wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 63. East wind 5 to 7 mph.
Tuesday
A slight chance of showers before 2pm. Mostly cloudy, with a high near 73. East wind around 7 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 64. East wind around 6 mph becoming calm after midnight.
Wednesday
A slight chance of showers after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 65.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 64.
Friday
Mostly sunny, with a high near 83.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
A chance of showers. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Carroll County Regional Airport/Jack B Poage Field MD
 39.33°N 76.98°W (Elev. 600 ft)
Last Update:
1:30 am EDT Aug 18, 2025
Forecast Valid:
3am 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