Lexington, Massachusetts, USA
35.1°F
1.7°C
Cold
Clear
Tonight: Lo 50 °F
Saturday: Hi 59 °F
Dew Point:
32.4°F
Humidity: 90%
UV Index: 0.0 None
Barometer:
mb
Rain Rate: 0.00 in/hr
Rain Today: 0.01 in
Rain Thursday: 0.00 in
Visibility: 10 miles
Wind:
Now: Calm
Avg: Calm
Gusts: 0 mph
Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Fri Apr 3, 2026 2:51pm EDT
Mostly Cloudy
Lo 50 °F
Mostly cloudy. Low around 50, with temperatures rising to around 56 overnight. West wind 8 to 12 mph.
Mostly Sunny
Hi 59 °F
Mostly sunny. High near 59, with temperatures falling to around 46 in the afternoon. Northeast wind 8 to 13 mph, with gusts as high as 23 mph.
Chance Rain Showers
Lo 39 °F
A chance of rain showers between 8pm and 2am, then a chance of rain showers and patchy fog. Mostly cloudy, with a low around 39. East wind 6 to 12 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Rain Showers
Hi 62 °F
Rain showers and patchy fog. Cloudy, with a high near 62. South wind 6 to 12 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain Showers then Mostly Cloudy
Lo 38 °F
Rain showers before 9pm. Mostly cloudy, with a low around 38. West wind around 9 mph. Chance of precipitation is 80%.
Sunny
Hi 52 °F
Sunny, with a high near 52. West wind 9 to 13 mph, with gusts as high as 26 mph.
Partly Cloudy
Lo 34 °F
Partly cloudy, with a low around 34. West wind 5 to 10 mph, with gusts as high as 22 mph.
Chance Snow Showers
Hi 48 °F
A chance of snow showers between 8am and 11am, then a chance of rain showers between 11am and 5pm, then a chance of rain and snow showers. Mostly sunny, with a high near 48. West wind 5 to 9 mph. Chance of precipitation is 30%.
Chance Rain And Snow Showers then Partly Cloudy
Lo 27 °F
A chance of rain and snow showers before 9pm. Partly cloudy, with a low around 27. Northwest wind around 8 mph. Chance of precipitation is 30%.
Sunny
Hi 49 °F
Sunny, with a high near 49. North wind 5 to 8 mph.
Mostly Clear
Lo 33 °F
Mostly clear, with a low around 33. South wind around 8 mph.
Mostly Sunny
Hi 60 °F
Mostly sunny, with a high near 60. Southwest wind 7 to 13 mph, with gusts as high as 24 mph.
Partly Cloudy
Lo 43 °F
Partly cloudy, with a low around 43. Southwest wind 8 to 12 mph, with gusts as high as 22 mph.
Partly Sunny
Hi 65 °F
Partly sunny, with a high near 65. Southwest wind around 9 mph.
Issued by:
National Weather Service Boston / Norton, MA
Updated Fri Apr 3, 2026 2:51pm EDT

SW 10 mph
SW 10 mph
SW 10 mph
SW 12 mph
SW 10 mph
SW 10 mph
SW 10 mph
W 10 mph
W 9 mph
W 9 mph
W 8 mph
NW 8 mph
NW 8 mph
N 8 mph
N 8 mph
N 9 mph
NE 9 mph
NE 10 mph
E 12 mph
E 13 mph
E 13 mph
E 13 mph
E 12 mph
E 12 mph
E 10 mph
E 9 mph
E 9 mph
E 8 mph
E 8 mph
E 7 mph
E 7 mph
E 6 mph
E 6 mph
SE 6 mph
SE 6 mph
SE 6 mph
000
FXUS61 KBOX 031915
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
315 PM EDT Fri Apr 3 2026
.WHAT HAS CHANGED...
Gale watches issued for our southern waters on Sunday.
&&
.KEY MESSAGES...
- Another backdoor front brings a return to colder air later
Saturday. More showers arrive Saturday night.
- A period of widespread showers on Sun with highs mainly in
the upper 50s and lower 60s.
- Mainly dry and chilly Mon-Wed except for a brief period or two
of rain/snow showers sometime later Mon into Tue. Odds of any
road/travel impacts are low at this time.
- Milder temps return Thu into Fri with highs likely rebounding
well into the 50s if not 60s with mainly dry weather.
&&
.DISCUSSION...
KEY MESSAGE 1...Another backdoor front brings a return to colder
air later Saturday. More showers arrive Saturday night.
A low pressure moving across southeast Canada will maintain a
gusty southwest wind across southern New England for most of
tonight. This will mean warmer conditions, with expected low
temperatures just slightly lower than our normal high
temperatures for early April. Still plenty of clouds lingering
across our region, but we should be able to eliminate the
drizzle away from the immediate coastal plains of RI and
southeast MA.
Thinking southern New England should have a brief window of
clearer skies Saturday morning as a cold front briefly moves
south of our region. This front returns back north as a warm
front late Saturday night, but most likely does not arrive until
later Sunday. The main impacts will be increasing clouds
Saturday afternoon into the overnight. Thinking the
NationalBlend guidance was a little too aggressive in returning
rainfall chances as quickly as it did. Tempered that timing with
more of a model consensus. Still a chance of showers Saturday
night, but mainly after midnight.
KEY MESSAGE 2...A period of widespread showers on Sun with highs
mainly in the upper 50s and lower 60s.
Low pressure will be lifting well to our north across Quebec on
Sunday. A trailing cold front extending south from the low will
approach from the west. Ahead of this cold front, a modest
southwest LLJ/PWAT plume about 2 standard deviations above
normal will work into the region. This should help to mix out
the lingering shallow cool inversion in most locations by
afternoon. Clouds will limit the high temp potential, but highs
should still recover into the upper 50s and lower 60s in many
locations. The LLJ/Pwat plume will also result in but enough
forcing for a period of widespread showers and a few downpours
on Sun. The system is fairly progressive, so the main shield of
showers will probably only last 2-4/3-5 hours in a given
location. Instability is rather marginal, so would not expect
more than perhaps a rumble or two of thunder if even that.
KEY MESSAGE 3...Mainly dry & chilly Mon-Wed except for a brief
period or two of rain/snow showers sometime later Mon into Tue.
Odds of any road/travel impacts are low at this time.
The ensembles continue to show very good agreement in an upper
trough setting up across the northeast. This will result in cool
temperatures with mainly dry weather. However, a couple of
strong but moisture starved shortwaves may bring a brief period
or two of rain/snow showers sometime later Mon into Tue. In
fact, the guidance indicates that the 500T mb temps will drop
to between -30C and -35C! This will certainly increase the risk
for those brief instability rain/snow showers and perhaps a bit
of graupel too. That being said, odds of any road/travel impacts
are relatively low at this point. Otherwise, dry weather with
high temps mainly in the middle 40s to the lower 50s. It will be
at night with lows mainly in the 20s to the lower 30s!
KEY MESSAGE 4...Milder temps return Thu into Fri with highs likely
rebounding well into the 50s if not 60s with mainly dry weather.
Large high pressure shifts east of the region by the end of the
work week. The result will be a milder southwest flow of air
back into southern New England. High temps should recover well
into the 50s if not 60s by Thu and Fri. Thinking mainly dry
weather at this point given the lack of synoptic scale forcing.
&&
.AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through 00Z...High confidence in trends. Moderate confidence in
timing.
Improving to VFR away from the immediate south coast. Local east
coast seabreezes for MA with the sudden rise in temperature as
sunshine develops.
Tonight...High confidence.
VFR for most, with IFR likely to linger towards the south coast
of New England, especially the Cape and islands. Patchy fog and
drizzle there.
Gusty SW winds with some LLWS due to a low level jet just above
an inversion for most of tonight. Wind shear diminishes early
Saturday morning. Winds turn W then NW behind a cold front late
tonight.
Saturday...High confidence.
VFR for most. Some lingering MVFR possible for the Cape and
Islands in the morning. Winds swing around to ENE Saturday. ENE
winds in afternoon at 10-15 kts with gusts up to 20 kts.
Saturday Night...Moderate confidence.
MVFR develops Saturday evening, with IFR expected after
midnight.
KBOS Terminal...High confidence in trends.
Sea breeze developed once the sunshine developed. Southwest
winds should develop towards the start of the evening push.
KBDL Terminal...High confidence.
Outlook /Sunday through Wednesday/...
Sunday: Mainly VFR, with areas IFR possible. Windy with gusts
up to 35 kt. SHRA, patchy BR.
Sunday Night: VFR. Windy with local gusts up to 30 kt. Slight
chance SHRA.
Monday: VFR. Windy with local gusts up to 30 kt.
Monday Night: VFR.
Tuesday: VFR. Breezy. Chance SHRA, slight chance SHSN.
Tuesday Night through Wednesday: VFR.
&&
.MARINE...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
High confidence.
A low pressure moving north of the waters will maintain a
general southwest flow for most of tonight. The cold front of
this low pressure should cross the waters late tonight, then
return back north as a warm front late Saturday night. Locally
dense fog is also expected to develop across the waters,
especially closer to the Cape and across the Islands and south
coastal areas. This fog should last into early Saturday morning.
Small Craft Advisories continue for most waters tonight, then
gradually and Saturday.
Winds will be turning from easterly early this morning to
southwest by mid-day, and then start to increase as low pressure
far to the west approaches. All the available guidance suggests
winds will start gusting around 25kt across much of the waters
by this afternoon. Thus another round of Small Craft Advisories
will be necessary. These winds will also produce some rough
seas. Winds are expected to diminish Friday night and early
Saturday as high pressure ridges into the area. Another low
pressure system may produce winds near gale force on Sunday.
Outlook /Sunday through Wednesday/...
Sunday: Low risk for gale force winds with gusts up to 35 kt.
Rough seas up to 11 ft. Rain showers, patchy fog.
Sunday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Areas of rough seas. Chance of rain showers.
Monday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Local rough seas.
Monday Night: Winds less than 25 kt. Seas locally approaching
5 ft.
Tuesday: Winds less than 25 kt. Slight chance of rain showers.
Tuesday Night: Winds less than 25 kt. Seas locally approaching
5 ft.
Wednesday: Winds less than 25 kt. Areas of seas approaching
5 ft.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 5 AM EDT Saturday for ANZ231>235-
237.
Gale Watch from Sunday morning through Sunday afternoon for
ANZ231>235-237-254>256.
Small Craft Advisory until 7 AM EDT Saturday for ANZ250.
Small Craft Advisory until 1 PM EDT Saturday for ANZ254>256.
&&
$$
DISCUSSION...Belk/Frank
AVIATION...Belk/Frank
MARINE...Belk/Frank
Radar images courtesy Weather Underground / Intellicast.
UV Index forecast high for today: 5 Medium
Current (Measured): 0.0 None
Note: Rain measured automatically by weather station. Rain totals do not necessarily include melted frozen precipitation.
For more accurate, manually measured rain data, see the Local Precip Data page.
0.00 in
Rain Rate (/hr):
0.00 in
Rain Last 60 min:
0.01 in
Rain Today:
0.00 in
Thursday:
0.01 in
April:
1.26 in
2026
1:17pm
36.1°F
High today:
12:00am
25.2°F
Low today:
2:28pm
30.4°F
High Thursday:
7:11am
16.2°F
Low Thursday:
12:00am
25.2°F
Low wind chill today:
7:11am
16.2°F
Low wind chill Thursday:
1:17pm
33.3°F
High dew pt today:
11:56pm
20.7°F
High dew pt Thursday:
None
Wind gust today:
None
Wind gust Thursday:
No alerts/warnings active for Southeast Middlesex County.
No snow expected in Lexington.
First Light:
6:11am
Sunrise:
6:39am
Sunset:
5:19pm
Twilight ends:
5:47pm
Daylight length:
10 hours 39 minutes
Phase:
Waning Gibbous (82%)
Moon set:
8:18am
Moon rise:
9:38pm