Lexington Weather

Lexington, Massachusetts, USA
83°F
5/27/2026 2:56pm
Lexington Conditions: Clear
Temperature: 83.1°F / 28.4°C
Dew Point: 60.8°F
Feels Like: 83.5°F
Relative Humidity: 47%
Wind: Calm, 10-min avg: Calm, gust: 7 mph
Barometer: 29.64 in Falling Slowly
Visibility: 10 miles
Rain Today: 0.00 in
National Short Range Forecast Discussion

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
359 AM EDT Wed May 27 2026

Valid 12Z Wed May 27 2026 - 12Z Fri May 29 2026

...Rounds of heavy rain and thunderstorms continue for much of the
Southern U.S. through late week...

...Unsettled weather lingers across parts of the West as a slow-moving
Pacific low spins over California and the Great Basin...

...Summerlike heat persists for the northern Plains and Upper Midwest with
widespread high temperatures well into the 80s and 90s...

A very warm, humid, and unstable air mass will continue to foster numerous
showers and thunderstorms for much of the Southern U.S. the next few days.
Thunderstorms capable of producing heavy rainfall and flash flooding will
again be a concern today, particularly across parts of the Gulf Coast from
eastern Texas to southern Mississippi and far southwest Alabama. The
Weather Prediction Center has issued a Slight Risk of excessive rainfall
(level 2/4), highlighting the potential for scattered instances of flash
flooding. Saturated soils from previous rainfall will elevate the concern,
particularly in low-lying and poor drainage areas. Urban centers will be
especially vulnerable as well. Farther north, a nearly stationary boundary
will also become a focus for heavy rainfall across portions of the Ohio
Valley and the Central Appalachians this afternoon. Similar to the risk
across the Gulf Coast states, prior rainfall and increasingly saturated
soils will raise the flash flood threat in spots. As a result, the Weather
Prediction Center has also outlined a Slight Risk to highlight this area
of concern. In addition to the heavy rain threat, severe thunderstorms
will also be possible, mainly from the Ohio Valley eastward into the
southern Mid-Atlantic. The primary hazards with any strong to severe
storms would be damaging wind gusts and hail.

Meanwhile, a large Pacific low-pressure system will continue to sit and
spin over the Great Basin and California, resulting in unsettled weather
for parts of the West through mid to late week. Underneath and ahead of
this system, increasing moisture will support numerous rain showers and
thunderstorms, especially over California, the Great Basin, and portions
of the Pacific Northwest. Some snow is also likely in the highest
elevations of the Sierra. The combination of cloud cover, precipitation,
and a colder air mass aloft will maintain temperatures that are 10 to 20
degrees below normal across portions of California, Nevada, Utah, and
Arizona. Gusty winds will also accompany this system, creating elevated
fire weather concerns where conditions remain dry.

In contrast to the cooler than normal temperatures for parts of the West,
unseasonably hot weather will remain entrenched across the northern Plains
and Upper Midwest. High temperatures are forecast to climb well into the
80s and 90s the next few days, with some locations across eastern Montana
and western North Dakota potentially nearing or eclipsing 100 degrees.
These early season summerlike temperatures could become hazardous to those
who are heat-sensitive, highlighted by widespread moderate to major levels
of HeatRisk through the end of the week.


Miller


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