Lexington Weather

Lexington, Massachusetts, USA
43°F
11/14/2025 3:47pm
Lexington Conditions: Mostly cloudy
Temperature: 43.3°F / 6.3°C
Dew Point: 27.9°F
Relative Humidity: 54%
Wind: Calm, 10-min avg: Calm, gust: None
Barometer: 29.86 in Steady
Visibility: 10 miles
Rain Today: 0.00 in
National Short Range Forecast Discussion

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
300 PM EST Fri Nov 14 2025

Valid 00Z Sat Nov 15 2025 - 00Z Mon Nov 17 2025

...Heavy rainfall likely with dangerous flooding and debris flows possible
for parts of Southern California especially on Saturday...

...Well above-normal to record-breaking warmth across the southern Plains
this weekend....

A slow-moving upper-level low is currently amplifying and sliding
southward along the California coast, funneling an atmospheric river of
deep Pacific moisture into the state. The initial moisture plume has
already overspread southern to central California generally from Los
Angeles northward today. A much more potent moisture plume is forecast to
overspread these same areas from south to north with very heavy rain,
strong winds, and high-elevation snow on Saturday. Widespread rainfall
totals of 2 to 5 inches are expected across the urban and coastal areas of
southern California over the next 48 hours. The most significant amounts
are forecast over the favored coastal-facing slopes of the Transverse
Ranges, where localized totals could exceed 6 inches by the time the
system begins to depart on Sunday. Excessive rainfall is the primary,
life-threatening concern, with widespread flash flooding and debris flows
likely across the vulnerable burn scar areas of Santa Barbara, Ventura,
and Los Angeles Counties.

Additionally, Winter Storm Warnings remain in effect for the higher
elevations of the central and  southern Sierra Nevada, where snow
accumulations exceeding a foot, along with powerful winds, will create
very difficult travel conditions.

Meanwhile, High Wind Warnings across parts of the northern Rockies into
the northern High Plains will expire late this afternoon following the
passage of a cold front with the potential of damaging winds initially.
South of this front, a pronounced surge of unseasonably warm air is
resulting in near-record to record-breaking high temperatures across a
broad region of the Great Plains today. Red Flag Warnings remain in effect
until late this afternoon for portions of Nebraska and South Dakota, where
any ignition could lead to rapid fire growth.

Temperatures over the Northern and Central Plains will cool down behind
the cold front but they are forecast to remain above normal for
mid-November into the weekend. Meanwhile, the potential for record high
temperatures are expected to be shoved into Southern Plains for much of
Texas and Oklahoma through the weekend.

Following an afternoon with temperatures rebounding to above normal across
the Mid-Atlantic and Southeast, the next period of widespread
precipitation will arrive this weekend as the frontal system advances out
of the central U.S. This front will bring the chance for scattered showers
and isolated thunderstorms to the Upper Ohio Valley, with a limited risk
of strong wind gusts.  As the system pivots east, a developing surface low
will bring a mix of rain and a period of wintry precipitation to the
interior Northeast on Sunday. Showers and a few embedded thunderstorms are
expected to be along the western slopes of the Appalachians ahead of the
cold front Saturday night, with rain moving through the southern half of
New England. By Sunday, colder air will rush across the Great Lakes with
blustery conditions and rain showers changing to wet snow. Afternoon high
temperatures into the 70s can be expected from the Mid-Atlantic down into
Florida and across the South this weekend before the arrival of the cold
front late on Sunday with only widely scattered showers and perhaps a
couple of thunderstorms. Meanwhile, rain will linger over the Pacific
Northwest before it gradually tapers off during the weekend.

Kong/Pereira


Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php