Hazardous Weather Conditions
Current conditions at
Gaithersburg - Montgomery County Airport (KGAI)
Lat: 39.17°NLon: 77.17°WElev: 495ft.
Fair
53°F
12°C
| Humidity | 86% |
| Wind Speed | S 9 mph |
| Barometer | 29.93 in (1014.8 mb) |
| Dewpoint | 49°F (9°C) |
| Visibility | 10.00 mi |
| Wind Chill | 50°F (10°C) |
| Last update | 22 Mar 1:56 am EDT |
Extended Forecast for
Olney MD
Overnight
Low: 47 °F
Mostly Cloudy
Sunday
High: 79 °F
Mostly Sunny
Sunday Night
Low: 49 °F
Chance
Showers then
ShowersMonday
High: 54 °F
Chance Rain
Monday Night
Low: 32 °F
Mostly Clear
Tuesday
High: 49 °F
Mostly Sunny
Tuesday Night
Low: 36 °F
Partly Cloudy
Wednesday
High: 59 °F
Partly Sunny
Wednesday Night
Low: 45 °F
Mostly Cloudy
then Chance
Rain
Detailed Forecast
Overnight
Mostly cloudy, with a low around 47. South wind around 6 mph.
Sunday
Mostly sunny, with a high near 79. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Showers and thunderstorms likely before 4am, then showers and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Low around 49. West wind 7 to 10 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of rain before 2pm. Cloudy through mid morning, then gradual clearing, with a high near 54. Northwest wind 13 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 32. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Partly cloudy, with a low around 36.
Wednesday
Partly sunny, with a high near 59.
Wednesday Night
A chance of rain after 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.
Thursday
A chance of rain before 2pm. Mostly cloudy, with a high near 66. Chance of precipitation is 30%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Friday
Rain likely. Partly sunny, with a high near 55. Chance of precipitation is 60%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 48.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Olney MD
39.16°N 77.06°W (Elev. 486 ft)
39.16°N 77.06°W (Elev. 486 ft)
2:23 am EDT Mar 22, 2026
2am EDT Mar 22, 2026-6pm EDT Mar 28, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
