Lexington Weather

Lexington, Massachusetts, USA

46°F

4/13/2026 5:14am

Lexington Conditions: Overcast
Temperature: 46.4°F / 8.0°C
Dew Point: 41.9°F
Relative Humidity: 84%
Wind: Calm, 10-min avg: Calm, gust: 6 mph
Barometer: 30.11 in Falling Slowly
Visibility: 10 miles
Rain Today: 0.00 in

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 090711
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
311 AM EDT Thu Apr 9 2026

.WHAT HAS CHANGED...

No significant changes.

&&

.KEY MESSAGES...

- Dry weather with moderating temps today and Fri. After 
  a cold start...sunny skies will allow highs to recover into 
  the 50s to near 60 this afternoon and well into the 60s Fri.
  Southerly flow will result in cooler high temps mainly in the
  upper 40s to the lower 50s along the south coast both days. 

- Dry this weekend outside brief scattered showers Fri night into
  early Sat morning. Otherwise...dry/seasonable with weekend highs 
  in the middle 50s to the lower 60s. 

- Summer-like warmth arrives early next week. Highs well into the
  60s to the lower 70s Mon and potentially 80+ Tue. Summerlike warmth 
  possible again Wed but need to watch a backdoor cold front especially 
  across eastern MA. A few brief showers possible at times...but dry 
  weather dominates.

&&

.DISCUSSION...

KEY MESSAGE 1...Dry weather with moderating temps today and Fri. 
After a cold start...sunny skies will allow highs to recover into 
the 50s to near 60 this afternoon and well into the 60s Fri.
Southerly flow will result in cooler high temps mainly in the upper 
40s to the lower 50s along the south coast both days. 

After an unseasonably cold start early this morning...large high 
pressure will move east and away from the region allowing a return 
southerly flow of milder air. The result will be sunny skies today 
but with a milder afternoon along with a bit of southerly breeze. 
Highs should reach well into the 50s to perhaps near 60 in a few 
spots. It will be cooler near the south coast as southerly winds 
will allow a modified marine airmass to keep highs in the upper 40s 
and lower 50s in this region. 

Not as cold tonight...but airmass is still quite dry so low temps 
will still mainly be in the 30s with even a few localized upper 20s 
possible in the normally coolest outlying locations. Mid level temps 
will continue to warm on Fri with southwest flow out ahead of a cold 
front. Partly to mostly sunny skies should push highs well into the 
60s with a southwest breeze of 20-25 mph developing by mid afternoon 
with a few gusts near 30 mph possible towards the Cape and Islands. 
The warming mid level temps and good mixing should push highs well 
into the 60s on Fri across much of the region. The gusty SSW flow 
will keep afternoon temps mainly in the upper 40s to the middle 50s 
near the south coast. 

KEY MESSAGE 2...Dry this weekend outside brief scattered showers Fri 
night into early Sat morning. Otherwise...dry/seasonable with weekend 
highs in the middle 50s to the lower 60s. 

A cold front will cross the region Fri night. While deep layer 
moisture is rather limited...there probably will be enough forcing 
for a brief period of scattered showers. Any rainfall amounts will 
be light and short-lived in a given location. This
activity should pretty much have exited the Cape/Islands by mid 
morning Sat. Otherwise...a dry and pleasant weekend is in store for 
the region. Large high pressure will build in from the west Sat into 
Sun. Highs both days should mainly be in the middle 50s to the lower 
60s...which is seasonable for the second week in April. 

KEY MESSAGE 3...Summer-like warmth arrives early next week. Highs 
well into the  60s to the lower 70s Mon and potentially 80+ Tue. 
Summerlike warmth possible again Wed but need to watch a backdoor 
cold front especially across eastern MA. A few brief showers 
possible at times...but dry weather dominates.

A warm front will cross the region Sun night into Mon morning with 
the potential for a brief round of scattered showers. A few brief 
showers also possible late Tue and/or Wed...but dry weather 
dominates.

Otherwise...the main story is above normal temps on Mon and 
potential for summerlike warmth by Tue. Currently thinking highs 
will be well into the 60s to the lower 70s Mon and potentially 80+ 
by Tue. Summerlike warmth is possible again Wed...but will need to 
watch the timing of a potential backdoor cold front Wed especially 
across eastern MA. If this moves through on the earlier side...much 
cooler temps would work into eastern New England. 

&&

.AVIATION /07Z THURSDAY THROUGH MONDAY/...

Forecaster Confidence Levels...

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

06z TAF Update...High confidence.

VFR conditions continue today through Friday. It is possible we see 
brief localized MVFR/IFR visibilities on patchy ground fog very late 
tonight/early Fri morning near the south coast. However...airmass is 
quite dry so not sure on this yet. Otherwise...we will see some 
southerly wind gusts of 15 to 25 knots this afternoon before 
diminishing tonight. SW wind gusts of 20 to 25 knots will develop 
Fri afternoon with a few gusts near 30 knots possible across the 
southeast New England coast. 

KBOS Terminal...High confidence in TAF. 

KBDL Terminal...High confidence in TAF.

Outlook /Friday Night through Monday/...

Friday Night: Mainly VFR, with local MVFR possible. Breezy.
Scattered SHRA.

Saturday: VFR. Breezy. 

Saturday Night through Sunday: VFR. 

Sunday Night: Mainly VFR, with local MVFR possible. Breezy.
Slight chance SHRA.

Monday: VFR. Windy with local gusts up to 30 kt. Slight chance
SHRA.

&&

.MARINE...

Forecaster Confidence Levels...

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

Today through Friday...High confidence.

High pressure shifts east of the region today. Some southerly wind 
gusts of 20+ knots and choppy seas develop this afternoon...but 
thinking conditions generally remain below small craft advisory 
thresholds. SW wind gusts of 20 to 25 knots should develop Fri 
afternoon ahead of an approaching cold front. We may see some near 
shore gusts up to 30 knots in the typically prone areas around Block 
Island Sound and Buzzards Bay. Later shifts will likely need a small 
craft advisory for some of our waters...particularly nearshore 
Friday afternoon. 

Outlook /Friday Night through Monday/...

Friday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Seas up to 5 ft. Scattered rain showers. 

Saturday through Saturday Night: Winds less than 25 kt. Seas up
to 5 ft. 

Sunday: Winds less than 25 kt. Seas locally approaching 5 ft. 

Sunday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Seas locally approaching 5 ft. Slight chance
of rain showers. 

Monday: Strong winds with areas of gusts up to 30 kt. Seas up
to 5 ft. Slight chance of rain showers. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...None.

&&

$$

DISCUSSION...Frank
AVIATION...Frank
MARINE...Frank