Current conditions at
Gaithersburg - Montgomery County Airport (KGAI)
Lat: 39.17°NLon: 77.17°WElev: 495ft.
Fair
66°F
19°C
| Humidity | 45% |
| Wind Speed | Vrbl 3 mph |
| Barometer | 29.92 in (1014.4 mb) |
| Dewpoint | 44°F (7°C) |
| Visibility | 10.00 mi |
| Last update | 21 Mar 2:56 pm EDT |
Extended Forecast for
Olney MD
Tonight
Low: 47 °F
Mostly Cloudy
Sunday
High: 81 °F
Partly Sunny
Sunday Night
Low: 48 °F
Chance
T-storms then
ShowersMonday
High: 56 °F
Showers then
Slight Chance
RainMonday Night
Low: 32 °F
Mostly Clear
Tuesday
High: 50 °F
Sunny
Tuesday Night
Low: 36 °F
Mostly Cloudy
Wednesday
High: 58 °F
Partly Sunny
Wednesday Night
Low: 42 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around 47. Light and variable wind becoming southeast around 6 mph in the evening.
Sunday
Partly sunny, with a high near 81. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 48. Southwest wind around 9 mph becoming north in the evening. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers and possibly a thunderstorm before 8am, then a slight chance of rain between 8am and 2pm. High near 56. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Mostly clear, with a low around 32. North wind 7 to 10 mph, with gusts as high as 18 mph.
Tuesday
Sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
Mostly cloudy, with a low around 42.
Thursday
Partly sunny, with a high near 64.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.
Friday
A chance of rain. Partly sunny, with a high near 57. Chance of precipitation is 30%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 50.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Olney MD
39.14°N 77.07°W (Elev. 499 ft)
39.14°N 77.07°W (Elev. 499 ft)
2:23 pm EDT Mar 21, 2026
3pm EDT Mar 21, 2026-6pm EDT Mar 28, 2026
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