Current conditions at
Gaithersburg - Montgomery County Airport (KGAI)
Lat: 39.17°NLon: 77.17°WElev: 495ft.
Fair
65°F
18°C
| Humidity | 100% |
| Wind Speed | Calm |
| Barometer | 30.07 in (1019.5 mb) |
| Dewpoint | 65°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 11 Sep 11:56 pm EDT |
Extended Forecast for
Ashton-Sandy Spring MD
Overnight
Low: 66 °F
Mostly Cloudy
Saturday
High: 81 °F
Mostly Cloudy
then Chance
T-stormsSaturday Night
Low: 68 °F
Showers and
Patchy FogSunday
High: 83 °F
Chance
Showers and
Patchy FogSunday Night
Low: 66 °F
Partly Cloudy
Monday
High: 78 °F
Mostly Sunny
Monday Night
Low: 54 °F
Mostly Clear
Tuesday
High: 75 °F
Sunny
Tuesday Night
Low: 59 °F
Mostly Clear
Detailed Forecast
Overnight
Mostly cloudy, with a low around 66. Calm wind.
Saturday
A chance of showers and thunderstorms, mainly between 2pm and 5pm. Mostly cloudy, with a high near 81. Light east wind becoming southeast 5 to 9 mph in the morning. Chance of precipitation is 30%.
Saturday Night
Showers and thunderstorms before 4am, then showers and possibly a thunderstorm, mainly after 4am. Patchy fog between 11pm and 5am. Low around 68. Southeast wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
A chance of showers and thunderstorms before 2pm. Patchy fog between 8am and 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 83. Light and variable wind becoming west around 6 mph in the morning. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 66. Calm wind becoming west around 5 mph after midnight.
Monday
Mostly sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
A chance of showers. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Friday
A slight chance of showers. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Ashton-Sandy Spring MD
39.15°N 77.01°W (Elev. 449 ft)
39.15°N 77.01°W (Elev. 449 ft)
10:53 pm EDT Sep 11, 2026
12am EDT Sep 12, 2026-6pm EDT Sep 18, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
