Lexington Weather

Lexington, Massachusetts, USA

43°F
11/4/2024 10:47am 
  • Lexington Conditions: Mostly cloudy
  • Temperature: 43.2°F / 6.2°CWarmer 0.8°F than last hour.
  • Dew Point: 32.2°FIncreased 2.2°Fsince last hour.
  • Relative Humidity: 65%Increased 4.0% since last hour.
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 30.52 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   
Southeast Middlesex County, MA - Special Weather Statement
 - SEE ALL NEARBY ALERTS -

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 301921
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
321 PM EDT Wed Oct 30 2024

.SYNOPSIS...
Drying out today and warmer. Near record high temperatures are 
expected Thursday ahead of an approaching cold front. Nothing 
more than a few brief showers are expected with this cold 
frontal passage early Friday and the rest of the day should 
still be mild and breezy. Warm and windy on Friday before 
temperatures fall back into the 50s behind a cold front for the 
weekend. General warming trend begins again next week.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...

Most of the clouds from earlier today have moved out of the area and 
some higher ones have taken their place. Temperatures have reached 
the lower 70s in a couple areas in southern New England, and with 
minimal cooling and increased moisture tonight, lows are expected to 
be in the 50s. Winds from the SSW are expected to persist tonight up 
to 10 kt.

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH FRIDAY/...

The ridge axis shifts east on Thursday and SW flow prevails, which 
will keep temperatures from cooling much at all. Near-record to 
record temperatures are possible tomorrow, especially in the CT and 
Merrimack Valleys, which are projected to hit over 80 degrees. At 
last check, 925 mb temperatures are sitting around +19C across 
various deterministic models for Thursday into Thursday night. 
Dewpoints are expected to remain in the 50s, which will also keep 
lows from getting below the mid 50s. Along the South Coast, lows may 
only get to the low 60s. Rain chances Friday morning continue to 
diminish.

&&

.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...

Key Points...

* Still very mild & breezy Fri with highs in the middle-upper 70s
* Dry but cooler/seasonable temps return this weekend
* A round of scattered showers possible sometime Mon and/or Tue
* Unseasonable warmth may return briefly by the middle of next week 

Details...

Friday...

A shortwave/cold front will cross the region Fri morning. This front 
is moisture starved...so nothing more than a few brief spot showers 
if anything. Otherwise...it will take sometime for the cooler air to 
work in from the west. This coupled with a very mild start and 
plenty of sunshine...should see highs reach the middle to upper 70s. 
It will also be quite breezy as the atmosphere will be well 
mixed...so expect westerly wind gusts of 25-30 mph with a few gusts 
up to 35 mph possible.

This Weekend...

Cooler/seasonable temps will return this weekend behind Friday/s 
cold front. Dry weather with high temps mainly in the 50s are on tap 
for the weekend as high pressure builds in from the west. It should 
be chilly at night...particularly Sat night when many outlying 
locations will drop well down into the 20s with ideal
radiational cooling conditions expected.

Monday/Tuesday/Wednesday...

Forecast confidence drops during the first half of the next work 
week. Anomalous ridging will build back across the southeast and 
into parts of the mid-Atlantic. At the same time...a backdoor front 
may try to temporarily work southward. This may result in a chilly 
day for parts of the region Mon...but that will depend upon where 
this backdoor front sets up. There also might be a round of 
scattered showers sometime Mon and/or Tue along this frontal 
boundary....but not expecting a significant rainfall event. The 
guidance does appear to want to move this boundary back north of our 
region as a warm front by Tue or Wed...but timing details are rather 
uncertain. If this occurs high temps may soar well into the 70s by 
Wed.

&&

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/... 
Forecast Confidence Levels:

Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

18z TAF Update...

Tonight: Moderate confidence. 

VFR with some MVFR leftover at some of the interior terminals.
Occasional IFR, but not expected to last long. Ceilings should 
continue to scatter out into tonight. Could see some lower
stratus tonight across the Cape and Islands that could bring
ceilings down to IFR once again. Confidence in those IFR 
ceilings is around 40 percent. SSW winds around 5-10 kt.

Thursday: High confidence. 

VFR. SW winds 10-15 kts. 

KBOS TAF...High confidence in TAF. 

KBDL TAF...High confidence in TAF.


Outlook /Wednesday Night through Friday/

Friday Night through Saturday: VFR. Breezy. 

Saturday Night through Sunday Night: VFR. 

Monday: VFR. Chance SHRA.

&&

.MARINE...
Forecaster Confidence Levels:

Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.

Tonight: SW winds at 10 kt to 15 kt with seas 2-5 ft with the higher 
waves in the outer waters.

Thursday: Seas decrease to 2-3 ft with continued SW winds at 15-20 
kt. A few gusts just below 20 kt also possible.

Thursday Night: Small Craft Advisory conditions are expected to 
return with seas up to 7 ft in the outer waters possible. Winds 
continue to be from the SW but increase to 25 kt with gusts up to 30 
kt. 

Outlook /Friday Night through Monday/...

Friday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Local rough seas. 

Saturday: Winds less than 25 kt. Areas of seas approaching
5 ft. 

Saturday Night through Sunday Night: Winds less than 25 kt. 

Monday: Winds less than 25 kt. Chance of rain showers. 

&&

.FIRE WEATHER...

The unusually prolonged dry stretch of weather will result in 
continued Fire Weather Concerns for the rest of the week. In 
fact...our biggest concern may be Friday when westerly winds may 
gust to between 25 and 30 mph with even a few gusts up to 35 mph! We 
will continue to coordinate Fire Weather products with our state 
partners.

&&

.CLIMATE...

Maximum Record High Temperatures: October, 30th

BOS: 78F (1918)
ORH: 78F (1946)
PVD: 79F (1946)
BDL: 83F (1946)

Maximum Record High Temperatures: October, 31st

BOS: 81F (1946) 
ORH: 79F (1946) 
PVD: 83F (1946) 
BDL: 82F (1946)

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 2 AM to 8 PM EDT Friday for 
     ANZ232>234.
     Small Craft Advisory from 11 PM Thursday to 8 PM EDT Friday 
     for ANZ235-237.
     Small Craft Advisory until 5 PM EDT this afternoon for ANZ250-
     254.
     Small Craft Advisory from 11 PM Thursday to 8 AM EDT Saturday 
     for ANZ254.
     Small Craft Advisory from 8 PM Thursday to 8 AM EDT Saturday 
     for ANZ255-256.

&&

$$

SYNOPSIS...Frank/Hrencecin
NEAR TERM...Hrencecin
SHORT TERM...Hrencecin
LONG TERM...Frank
AVIATION...Frank/Hrencecin
MARINE...Frank/Hrencecin
FIRE WEATHER...Frank
CLIMATE...Dooley
      

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