Olney, MD Weather

Montgomery County5:35 AM EDT39.15°N, 77.07°WElevation 541 ft

Current conditions

Clear
39°
Clear
Feels like 39°
High 68°·Low 44° tonight
WindCalm
Humidity87%
Dew point36°
Pressure30.24 inHg
Visibility10 mi
Cloud cover1%
UV index0 Low
Sunrise7:24 AM
Sunset6:24 PM

Observed at Gaithersburg - Montgomery County Airport · 45 min ago

Forecast

10-day
  • Overnight

    Clear, with a low around 44. North wind around 9 mph, with gusts as high as 18 mph.

  • Tuesday

    Sunny, with a high near 68. North wind around 10 mph, with gusts as high as 20 mph.

  • Tuesday Night

    Clear, with a low around 45. North wind around 7 mph.

National Weather Service forecast updated 3 hrs ago.

  1. Now Clear 46°
  2. 6 AM Sunny 44°
  3. 7 AM Sunny 44°
  4. 8 AM Sunny 44°
  5. 9 AM Sunny 50°
  6. 10 AM Sunny 53°
  7. 11 AM Sunny 57°
  8. 12 PM Sunny 61°
  9. 1 PM Sunny 63°
  10. 2 PM Sunny 65°
  11. 3 PM Sunny 67°
  12. 4 PM Sunny 66°
  13. 5 PM Sunny 65°
  14. 6 PM Clear 65°
  15. 7 PM Clear 62°
  16. 8 PM Clear 59°
  17. 9 PM Clear 56°
  18. 10 PM Clear 55°
  19. 11 PM Clear 53°
  20. Wed12 AM Clear 52°
  21. 1 AM Clear 51°
  22. 2 AM Clear 51°
  23. 3 AM Clear 50°
  24. 4 AM Clear 48°

10-day forecast

Details
  1. TonightOct 19 Clear Clear44°
  2. TodayOct 20 Sunny Sunny45°68°
  3. WedOct 21 Sunny Sunny42°64°
  4. ThuOct 22 Sunny Sunny44°66°
  5. FriOct 23 Sunny Sunny38°59°
  6. SatOct 24 Sunny Sunny39°59°
  7. SunOct 25 Sunny Sunny42°64°
  8. MonOct 26 Mostly Sunny Mostly Sunny69°
  9. TueOct 27 Cloudy Cloudy50°68°
  10. WedOct 28 Cloudy Cloudy0.03 in49°62°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news near Olney

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Air quality

27
Good
Fine particles (PM2.5)

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • TueGood (28)
  • WedGood (22)
  • ThuGood (28)

Suburban DC, MD reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:24 AM
Sunset 6:24 PM
Daylight 11 h 0 min (−2 min 26 s tomorrow)
Waxing Gibbous · 67% lit
Moonrise 3:35 PM Moonset 1:24 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low67° / 45°
Record high87° (1969)
Record low28° (1992)
Wettest2.69 in (1873)
Month to date2.61 in (normal 2.47 in)

Baltimore Area, records since 1872. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in LWX, issued 2 hrs ago

What Has Changed

No changes were made to the forecast overnight.

Key Messages

- 1) Cool and dry weather continues through the weekend, although a slow-moving Nor'easter off the coast will bring gusty winds along the Chesapeake Bay and minor tidal flooding at times through Friday.

Discussion

KEY MESSAGE 1...Cool and dry weather continues through the weekend, although a slow-moving Nor'easter off the coast will bring gusty winds along the Chesapeake Bay and minor tidal flooding at times through Friday.

Surface high pressure remains over the forecast area through the forecast period as a Nor'easter continues to drift offshore. A tight pressure gradient between surface high pressure nearby and the offshore Nor'easter yield gusty conditions daily, mainly along and east of the I-95 corridor. Under high pressure, temperatures moderate through Thursday with high temperatures in the 50s and 60s. Overnight low temperatures will be in the 30s and 40s through Thursday night. Aloft, upper level troughing develops across the eastern CONUS as ridging develops over central CONUS. By Thursday, the Nor'easter is absorbed into the upper trough and tracks off the coast of Maine.

Surface high pressure builds southward out of southeastern Canada and eastern Great Lakes regions into the mid-Atlantic Friday through Monday. Dry conditions are expected each day, while temperatures will be 5 to 10 degrees below average.

Aviation

VFR conditions continue as surface high pressure builds overhead and dry conditions persist. Winds remain primarily out of the north each day with terminals near the airport gusting around 15 knots in the afternoon. Otherwise, terminals can expect light northerly winds, no precipitation, and VFR conditions.

VFR conditions Friday through Saturday night. Winds generally north 5 to 15 knots.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.