Lexington, Massachusetts, USA
35.1°F
1.7°C
Cold
Clear
This Afternoon: Hi 63 °F
Tonight: Lo 49 °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 Monday: 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 Tue Sep 22, 2026 3:22pm EDT
- Dry, cool, and breezy conditions continue through Thursday.
- Monitoring the potential for a strong coastal low to arrive late week, bringing chances for strong winds, rainfall, and coastal flood/erosion concerns through the weekend.
Mostly Sunny
Hi 63 °F
Mostly sunny, with a high near 63. Northeast wind around 9 mph.
Partly Cloudy
Lo 49 °F
Partly cloudy, with a low around 49. Northeast wind 5 to 8 mph.
Mostly Sunny
Hi 64 °F
Mostly sunny, with a high near 64. Northeast wind 8 to 13 mph, with gusts as high as 26 mph.
Mostly Clear
Lo 48 °F
Mostly clear, with a low around 48. Northeast wind 6 to 10 mph, with gusts as high as 21 mph.
Sunny
Hi 64 °F
Sunny, with a high near 64. Northeast wind 8 to 12 mph, with gusts as high as 24 mph.
Partly Cloudy
Lo 50 °F
Partly cloudy, with a low around 50. Northeast wind 6 to 9 mph.
Partly Sunny then Chance Rain Showers
Hi 65 °F
A chance of rain showers after 2pm. Partly sunny, with a high near 65. North wind 9 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Chance Rain Showers
Lo 54 °F
A chance of rain showers. Mostly cloudy, with a low around 54. North wind around 15 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Chance Rain Showers
Hi 63 °F
A chance of rain showers. Mostly cloudy, with a high near 63. North wind around 15 mph, with gusts as high as 35 mph. Chance of precipitation is 50%.
Chance Showers And T-Storms
Lo 55 °F
A chance of rain showers before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 55. North wind around 15 mph, with gusts as high as 32 mph. Chance of precipitation is 50%.
Showers And T-Storms Likely
Hi 62 °F
A chance of rain showers before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 62. North wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Showers And T-Storms Likely
Lo 53 °F
Showers and thunderstorms likely. Mostly cloudy, with a low around 53. North wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Chance Rain Showers
Hi 62 °F
A chance of rain showers. Mostly cloudy, with a high near 62. North wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Chance Rain Showers
Lo 52 °F
A chance of rain showers before 3am. Mostly cloudy, with a low around 52. North wind around 7 mph.
Issued by:
National Weather Service Boston / Norton, MA
Updated Tue Sep 22, 2026 3:22pm EDT

NE 9 mph
NE 7 mph
NE 6 mph
NE 5 mph
NE 5 mph
NE 5 mph
NE 5 mph
NE 5 mph
NE 6 mph
NE 6 mph
N 7 mph
N 7 mph
N 8 mph
N 8 mph
NE 8 mph
NE 9 mph
NE 10 mph
NE 12 mph
NE 13 mph
NE 13 mph
NE 13 mph
NE 13 mph
NE 13 mph
NE 12 mph
NE 12 mph
NE 10 mph
NE 8 mph
NE 7 mph
NE 6 mph
NE 6 mph
NE 6 mph
NE 6 mph
N 6 mph
N 6 mph
N 7 mph
N 8 mph
000
FXUS61 KBOX 222001
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
401 PM EDT Tue Sep 22 2026
.WHAT HAS CHANGED...
No changes to current weather headlines. Confidence in an
impactful coastal storm for Friday into this weekend is
increasing.
&&
.KEY MESSAGES...
- Dry, cool, and breezy conditions continue through Thursday.
- Monitoring the potential for a strong coastal low to arrive
late week, bringing chances for strong winds, rainfall, and
coastal flood/erosion concerns through the weekend.
&&
.DISCUSSION...
KEY MESSAGE 1...Dry, cool, and breezy conditions continue
through Thursday.
Not anticipating much change to the forecast through Thursday.
A sprawling high pressure to our north will maintain cooler
conditions with gusty east to northeast winds. There should be a
brief period this evening where gusts subside before another
surge of colder air starts the gustiness again. The strongest
gusts should be from late morning into the afternoon Wednesday.
Slightly less breezy conditions for Thursday.
Across the southern coastal waters, Gale Warnings remain in
effect for Wednesday and Thursday.
KEY MESSAGE 2...Monitoring the potential for a strong coastal
low to arrive late week, bringing chances for strong winds,
rainfall, and coastal flood/erosion concerns through the
weekend.
While there is still a large amount of uncertainty in the
guidance, the overarching trend is indicating the low slowly
meanders north and retrograding west into the waters south of
Block Island and Nantucket; however, how close the low tracks to
the southern coast is still a large question. It is important
to note that the exact track and strength of the low will
strongly influence the timing and magnitude of gusts, QPF, and
how far inland the rain extends. The latest ECMWF is indicating
the low passes closer to Long Island whereas the latest GFS is
showing the low passing closer to the outer Cape and Nantucket.
Depending on the track the low takes, the onset of the strongest
winds could be as early as Friday evening or as late as
Saturday afternoon. Regardless, confidence is slowly increasing
in at least Gale Force winds (34kts/40mph), with the possibility
of Storm Force winds (48kts/55mph) Friday night/Saturday,
across the southern waters leading to an upgrade of the Gale
Watch to a Gale Warning for the southern and southeastern
waters.
This prolonged period of gusty northeasterly winds will build
rough seas and raise the threat for coastal flooding and
erosion, especially for east facing beaches and harbors. Latest
coastal flooding guidance from the Stevens Institute shows
greatest risk for at least minor coastal flooding for Nantucket
Harbor around the high tidal cycles Friday, Friday night, and
Saturday. The coastal flooding risk is slowly increasing for
Boston Harbor as well, although to a slightly lesser extent
compared to Nantucket.
&&
.AVIATION /20Z TUESDAY THROUGH SUNDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through 00Z...High confidence.
VFR for most. Local MVFR cloud bases between 020-025 possible
towards southeast MA, and perhaps across some of the higher
terrain of central and western MA. Gusty E to NE winds diminish
with sunset. MVFR cloud bases should also dissipate.
Tonight...High confidence.
Mainly VFR. NE winds of 5 to 15 kt tonight with 20-25 kt gusts
at times across the southeast New England coast and 25-30 kt for
Nantucket.
Wednesday and Wednesday Night...High confidence.
Mainly VFR. NE winds of 10 to 20 kt with gusts of 20 to 30 kt,
strongest towards the southeast New England coast. Gusts near
35 kt for Nantucket.
KBOS Terminal...High confidence in TAF.
KBDL Terminal...High confidence in TAF.
Outlook /Thursday through Sunday/...
Thursday: VFR. Windy with gusts up to 35 kt.
Thursday Night: VFR. Strong winds with local gusts up to 40 kt.
Friday: VFR. Strong winds with gusts up to 45 kt. Chance SHRA.
Friday Night: VFR. Strong winds with gusts up to 40 kt. Chance
SHRA.
Saturday: VFR. Strong winds with gusts up to 40 kt. Chance
SHRA, slight chance TSRA.
Saturday Night: Mainly VFR, with local MVFR possible. Strong
winds with local gusts up to 40 kt. Chance SHRA, slight chance
TSRA.
Sunday: Mainly VFR, with areas MVFR possible. Windy with gusts
up to 35 kt. Chance SHRA, slight chance TSRA.
&&
.MARINE...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through Wednesday Night...High Confidence.
NE winds 15-20 kt with gusts up to 25 kt at times will
continue, as strong 1030+ mb high pressure over southeast
Ontario moves eastward into Quebec. This northeast fetch will
yield rough seas on the ocean waters. Dry weather and good
visibility prevail. Potential for gale force gusts appear to
hold off until Wed and beyond. Seas increase to 6-13 ft outside
the bays, harbors and sounds by Wednesday evening and night.
Outlook /Thursday through Sunday/...
Thursday: Strong winds with gusts up to 45 kt. Rough seas up to
16 ft.
Thursday Night: Moderate risk for gale force winds with local
gusts up to 45 kt. Rough seas up to 17 ft. Chance of rain
showers.
Friday: gale force winds with gusts up to 45 kt. Rough seas up
to 20 ft. Chance of rain showers.
Friday Night: gale force winds with gusts up to 45 kt. Rough
seas up to 22 ft. Chance of rain showers, slight chance of
thunderstorms.
Saturday: gale force winds with gusts up to 45 kt. Rough seas
up to 21 ft. Rain showers likely, chance of thunderstorms.
Saturday Night: Strong winds with local gusts up to 45 kt.
Rough seas up to 19 ft. Rain showers likely, slight chance of
thunderstorms.
Sunday: Strong winds with gusts up to 35 kt. Rough seas up to
16 ft. Rain showers likely, slight chance of thunderstorms.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...High Risk for Rip Currents until 8 PM EDT this evening for MAZ007-
015-016-019>024.
RI...High Risk for Rip Currents until 8 PM EDT this evening for RIZ002-
004>008.
MARINE...Small Craft Advisory until 8 PM EDT Thursday for ANZ230-250-
251.
Gale Warning from 8 PM Wednesday to 8 PM EDT Thursday for
ANZ231-254.
Gale Warning from 5 AM Wednesday to 8 PM EDT Thursday for
ANZ232>235-237-281.
Small Craft Advisory from 5 AM Wednesday to 8 PM EDT Thursday
for ANZ236.
Gale Warning from 2 AM Wednesday to 8 PM EDT Thursday for
ANZ255-256-282-283.
&&
$$
DISCUSSION...Belk/McMinn
AVIATION...Belk/McMinn
MARINE...Belk/McMinn
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
Monday:
0.01 in
September:
1.26 in
2026
1:17pm
36.1°F
High today:
12:00am
25.2°F
Low today:
2:28pm
30.4°F
High Monday:
7:11am
16.2°F
Low Monday:
12:00am
25.2°F
Low wind chill today:
7:11am
16.2°F
Low wind chill Monday:
1:17pm
33.3°F
High dew pt today:
11:56pm
20.7°F
High dew pt Monday:
None
Wind gust today:
None
Wind gust Monday:
No alerts/warnings active for Southeast Middlesex County.
First Light:
6:11am
Sunrise:
6:39am
Sunset:
5:19pm
Twilight ends:
5:47pm
Daylight length:
10 hours 39 minutes
Phase:
Waxing Gibbous (82%)
Moon set:
8:18am
Moon rise:
9:38pm