October Discobs 2026

[nj2va]

First freeze of the year at Deep Creek, now time to track first flakes

[WEATHER53]

36 for low in White Oak and 32 Frederick 

[EastCoast NPZ]

Nearest PWS says overnight low of 31F.  Pretty heavy frost when I got up.

[ThePhotoGuy]

A balmy 43 for the low. 

[arlwx12]

Freeze warnings back up for some areas just east of the Blue Ridge.

National Weather Service Baltimore MD/Washington DC
150 PM EDT Sun Oct 18 2026

MDZ004-005-VAZ051-501-502-505-190200-
/O.NEW.KLWX.FZ.W.0008.261019T0500Z-261019T1300Z/
Frederick-Carroll-Culpeper-Northern Fauquier-Southern Fauquier-
Western Loudoun-
Including the cities of Bethel, Eldersburg, Lucketts, Rapidan,
Westminster, Stevensburg, Buckeystown, Gamber, Turnbull, Catalpa,
Park Mills, Airlie, Reva, Warrenton, Ballenger Creek, Cardova,
Culpeper, Frederick, and Winston
150 PM EDT Sun Oct 18 2026

...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM EDT MONDAY...

* WHAT...Sub-freezing temperatures as low as 30 expected.

* WHERE...In Maryland, Carroll and Frederick Counties. In Virginia,
  Culpeper, Fauquier, and Western Loudoun Counties.

* WHEN...From 1 AM to 9 AM EDT Monday.

* IMPACTS...Frost and freeze conditions could kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

* ADDITIONAL DETAILS...Expect the coldest temperatures in valleys and
  other low lying areas.
(snip)

[arlwx12]

Plus frost advisories for west of the immediate DC/Baltimore beltways and southern Potomac River.

National Weather Service Baltimore MD/Washington DC
150 PM EDT Sun Oct 18 2026

MDZ006-503>507-VAZ038>040-050-053-506-526-527-190200-
/O.NEW.KLWX.FR.Y.0010.261019T0500Z-261019T1300Z/
Northern Baltimore-Northwest Montgomery-Central and Southeast
Montgomery-Northwest Howard-Central and Southeast Howard-
Northwest Harford-Greene-Madison-Rappahannock-Orange-Fairfax-
Eastern Loudoun-Northwest Prince William-Central and Southeast
Prince William/Manassas/Manassas Park-
Including the cities of Clarksville, Bynum, Reston, Poplar Springs,
Castleton, Bel Air, Montclair, Madison Run, McLean, Orange, Woolsey,
Everona, Countryside, Owings Mills, Haymarket, Glyndon, Dayton, Dale
City, Timonium, Burr Hill, Sterling Park, Reisterstown, Twymans Mill,
Hickory, Historic Ellicott City, Fairfax Station, Glenwood, Glenelg,
Lake Ridge, Dulles International Airport, Rockville, Watersville,
Hackleys Crossroads, Manassas, Randallstown, Boyds, Fordsville,
Leesburg, Aden, Simpsonville, Woodstock, Gleedsville, Woodbridge,
Cockeysville, Oak Grove, Columbia, Burke, Silver Spring, Washington,
Bethesda, Chantilly, Independent Hill, Lahore, Gaithersburg, Four
Corners, Flint Hill, Glenmont, Five Forks, Madison Mills, Rock Mills,
Long Green, Germantown, Nasons, Unionville, Lisbon, Shady Grove,
Fallston, Aspen Hill, West Friendship, Langley, and Annandale
150 PM EDT Sun Oct 18 2026

...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM EDT MONDAY...

* WHAT...Temperatures as low as 33 will result in frost formation.

* WHERE...Portions of central and northern Maryland and central and
  northern Virginia.

* WHEN...From 1 AM to 9 AM EDT Monday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
  outdoor plants may be killed if left uncovered.

 

[wxdude64]

Bottomed out at 30.9 degrees this am, first freeze of the year.

[wxmeddler]

On 10/17/2026 at 8:41 AM, SnowtoRain said:

Since midnight lines up with Lusby and Cambridge mesonets which was the direction the rain was moving from. Easton meso must have just been just missing the rates or has something messing up the reading cause that is much lower than adjacent sites. Other local pws in Easton have similar event totals.

We were just there and tested the gauge. Likely just got missed, but I’ll go back into the radar estimates and check. 

8 hours ago, MN Transplant said:

Clarksville meso got to 32.

38.7

Yeah, it’s in a bit of a local cold sink.

[Midshore]

Low of 36

[GramaxRefugee]

Quite a few frosted roofs in the neighborhood this morning; I was surprised.  My low 37 on a DP of 31.

Burning first fire now. (Happy wife)

[pazzo83]

low of 40.3F here this morning - 45F now at midnight.  Seeing some upper 30s nearby.

[WxUSAF]

BWI down to at least 35.

[dailylurker]

30 minutes ago, WxUSAF said:

BWI down to at least 35.

Yes sir. Coldest morning of the season so far here in the lowlands. 35 in my yard as well. I think we have our first light frost. Early this season. Winter- 1, Nino- 0 so far. 

[SnowtoRain]

37.2 with some frost

[H2O]

Another 37.8°

[WxUSAF]

Rooftop frost on about every house in my neighborhood 

[katabatic]

Similar to yesterday 27.7. 

[mappy]

Low of 32 and quite frosty 

[weatherCCB]

Low of 36

[midatlanticweather]

32.8 for the low and very frosty

[hstorm]

Low of 36.3 with some light frost.