Lexington Weather
Lexington, Massachusetts, USA
- Mostly cloudy
-
63.9°F / 17.7°C
-
43.2°F
-
47%
- Calm, 10-min avg: Calm, gust: 2 mph
- 10 miles
- 0.00 in
Current Conditions [‒] Current Conditions [+]
63.9°F
17.7°C
Comfortable
Mostly cloudy
This Afternoon: Hi 67 °F
Tonight: Lo 39 °F
Dew Point:
43.2°F
Humidity:
47%
Barometer:
mb
Rain Rate: 0.00 in/hr
Rain Today: 0.00 in
Rain Thursday: 0.00 in
Visibility: 10 miles
Wind:
Now: Calm
Avg: Calm
Gusts: 2 mph
Forecast [‒] Forecast [+]
NWS Weather Forecast -
This Afternoon,
Tonight,
&
Saturday
through
Thursday Night
Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Fri Oct 9, 2026 2:50pm EDT
Overview:
- Breezy through sundown, then mostly clear and dry with decreasing winds tonight through Saturday.
- The next quick moving round of rain comes Sunday afternoon and evening, continuing overnight and exiting Monday morning.
- Quick round of rain around mid week, then dry weather returns by Thursday.
This Afternoon:
Sunny
Hi 67 °F
Sunny, with a high near 67. West wind around 13 mph, with gusts as high as 31 mph.
Tonight:
Mostly Clear
Lo 39 °F
Mostly clear, with a low around 39. West wind 3 to 8 mph, with gusts as high as 26 mph.
Saturday:
Sunny
Hi 63 °F
Sunny, with a high near 63. Northwest wind 2 to 7 mph.
Saturday Night:
Partly Cloudy
Lo 43 °F
Partly cloudy, with a low around 43. North wind around 1 mph.
Sunday:
Partly Sunny
Hi 64 °F
Partly sunny, with a high near 64. Southwest wind 1 to 7 mph.
Sunday Night:
Rain
Lo 54 °F
Rain after 8pm. Cloudy, with a low around 54. Southeast wind around 6 mph. Chance of precipitation is 100%.
Columbus Day:
Light Rain then Mostly Cloudy
Hi 67 °F
Rain before 9am. Mostly cloudy, with a high near 67. North wind 3 to 7 mph. Chance of precipitation is 80%.
Monday Night:
Partly Cloudy
Lo 52 °F
Partly cloudy, with a low around 52. Northwest wind around 3 mph.
Tuesday:
Chance Rain Showers
Hi 66 °F
A chance of rain showers after 7am. Partly sunny, with a high near 66. Southeast wind 3 to 9 mph. Chance of precipitation is 50%.
Tuesday Night:
Rain Showers Likely
Lo 49 °F
Rain showers likely. Mostly cloudy, with a low around 49. West wind around 9 mph. Chance of precipitation is 60%.
Wednesday:
Chance Rain Showers
Hi 60 °F
A chance of rain showers. Partly sunny, with a high near 60. Northwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Wednesday Night:
Partly Cloudy
Lo 42 °F
Partly cloudy, with a low around 42. Northwest wind around 8 mph.
Thursday:
Sunny
Hi 58 °F
Sunny, with a high near 58. Northwest wind around 7 mph.
Thursday Night:
Partly Cloudy
Lo 43 °F
Partly cloudy, with a low around 43. West wind around 6 mph.
NWS Hourly Forecast -
Today 5pm through Sun 4am
Issued by:
National Weather Service Boston / Norton, MA
Updated Fri Oct 9, 2026 2:50pm EDT
5:00pm
Dew Pt 43°F
W 10 mphPrecip: 0%
6:00pm
Dew Pt 42°F
W 8 mphPrecip: 0%
7:00pm
Dew Pt 43°F
W 7 mphPrecip: 0%
8:00pm
Dew Pt 45°F
W 7 mphPrecip: 0%
9:00pm
Dew Pt 45°F
W 7 mphPrecip: 0%
10:00pm
Dew Pt 45°F
W 8 mphPrecip: 0%
11:00pm
Dew Pt 44°F
W 6 mphPrecip: 0%
12:00am
Dew Pt 45°F
Wind Chill: 48°F
W 6 mphPrecip: 0%
1:00am
Dew Pt 44°F
Wind Chill: 46°F
W 5 mphPrecip: 0%
2:00am
Dew Pt 44°F
Wind Chill: 45°F
W 5 mphPrecip: 0%
3:00am
Dew Pt 45°F
Wind Chill: 43°F
W 5 mphPrecip: 0%
4:00am
Dew Pt 43°F
Wind Chill: 40°F
NW 5 mphPrecip: 0%
5:00am
Dew Pt 41°F
Wind Chill: 39°F
NW 3 mphPrecip: 0%
6:00am
Dew Pt 40°F
Wind Chill: 37°F
NW 5 mphPrecip: 0%
7:00am
Dew Pt 39°F
Wind Chill: 36°F
NW 5 mphPrecip: 0%
8:00am
Dew Pt 40°F
Wind Chill: 37°F
NW 5 mphPrecip: 0%
9:00am
Dew Pt 43°F
Wind Chill: 42°F
NW 6 mphPrecip: 0%
10:00am
Dew Pt 42°F
Wind Chill: 47°F
NW 7 mphPrecip: 0%
11:00am
Dew Pt 41°F
NW 7 mphPrecip: 0%
12:00pm
Dew Pt 40°F
NW 7 mphPrecip: 0%
1:00pm
Dew Pt 40°F
NW 6 mphPrecip: 0%
2:00pm
Dew Pt 39°F
NW 6 mphPrecip: 0%
3:00pm
Dew Pt 38°F
NW 5 mphPrecip: 0%
4:00pm
Dew Pt 39°F
NW 3 mphPrecip: 0%
5:00pm
Dew Pt 40°F
NW 2 mphPrecip: 0%
6:00pm
Dew Pt 40°F
N 1 mphPrecip: 0%
7:00pm
Dew Pt 40°F
N 1 mphPrecip: 0%
8:00pm
Dew Pt 42°F
NE 1 mphPrecip: 0%
9:00pm
Dew Pt 43°F
NE 1 mphPrecip: 0%
10:00pm
Dew Pt 42°F
N 1 mphPrecip: 0%
11:00pm
Dew Pt 42°F
NE 1 mphPrecip: 0%
12:00am
Dew Pt 43°F
NE 1 mphPrecip: 0%
1:00am
Dew Pt 42°F
N 1 mphPrecip: 0%
2:00am
Dew Pt 42°F
N 1 mphPrecip: 0%
3:00am
Dew Pt 42°F
N 1 mphPrecip: 0%
4:00am
Dew Pt 42°F
NW 1 mphPrecip: 0%
FORECAST DISCUSSION
Area Forecast Discussion
for Boston / Norton, MA
000
FXUS61 KBOX 091859
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
259 PM EDT Fri Oct 9 2026
.WHAT HAS CHANGED...
No significant changes to the forecast.
&&
.KEY MESSAGES...
- Breezy through sundown, then mostly clear and dry with
decreasing winds tonight through Saturday.
- The next quick moving round of rain comes Sunday afternoon and
evening, continuing overnight and exiting Monday morning.
- Quick round of rain around mid week, then dry weather returns
by Thursday.
&&
.DISCUSSION...
KEY MESSAGE 1...Breezy through sundown, then mostly clear and dry
with decreasing winds tonight through Saturday.
It's been a partly sunny day but also quite breezy with a mixing
depth to 800 mb, supporting westerly wind gusts in the 25 to as much
as 35 mph this afternoon. Expect those conditions to continue
through sundown, bringing a decrease in gust speeds as the mixed
layer decreases. The main issue for tonight is if winds can slacken
enough to support patchy frost. A sprawling area of high pressure
centered over western NY/PA is forecast to move eastward overnight
tonight but not really crest over Southern New England until
Saturday morning. Efficient radiational cooling is expected tonight;
there may be just enough of wind (around 5 mph) to keep frost from
developing or in isolated coverage, and for those reasons haven't
issued frost headlines for those non-Northwest MA zones where the
growing season continues. If you do have crops or plants, it may not
be a bad idea to consider taking protective actions to prevent frost
damage, but I think the coverage ends up being too isolated. Lows
forecast in the mid/upper 30s in the coolest outlying areas similar
to surface dewpoints, and into the low to mid 40s for the urban
areas and coastlines.
A chilly start to Saturday but high pressure becomes established
across Southern New England. Much of the day features full or mostly-
full sunshine and light northwest winds, but a canopy of high-level
clouds/cirrus will be streaming in from the south and southwest.
Seasonable highs in the mid 60s under full sun. High pressure then
retreats eastward by Saturday night, supporting lows in the upper
30s to the mid/upper 40s.
KEY MESSAGE 2...The next quick moving round of rain comes Sunday
afternoon and evening, continuing overnight and exiting Monday
morning.
The latest guidance suite continued to exhibit large uncertain with
the timing of rainfall ending Monday morning. The deterministic GFS
was on the more progressive side, with many of the international
models more closely aligned with a slower timing and closer track to
southern New England. However, there is agreement on the overall
trend of drier conditions developing through the day. It is the
timing that will need to be refined with later forecasts. For now,
held on to a chance of showers towards the Cape and islands
for a time Monday morning.
The timing will also impact rainfall totals. At present, expecting
this will be a modest rainfall, with rainfall amounts generally
between one half to one inch. A slower timing, should it occur,
opens the door for rainfall up to 1.50", mainly towards the Cape and
islands.
A brief dry period is anticipated for Monday afternoon and most of
Monday night.
KEY MESSAGE 3...Quick round of rain around mid week, then dry
weather returns by Thursday.
Our region should then get clipped by a pair of low pressures, each
taking a different track. The first should pass by to our north
later Monday night into Tuesday. Its cold front likely does not
clear the coastal waters until late Tuesday night. This will be a
period of more showery precipitation.
Another dry period is expected Wednesday though most of Thursday
night, with high pressure moving across northern New England.
The forecast for next Friday is uncertain. A low pressure near James
Bay could swing its associated fronts across our region Friday into
Friday Night. Have a mention in the forecast for more showers some
time Friday. However, this timing could be delayed with later
forecasts.
&&
.AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
18z TAF Update:
Through 00z Saturday: High confidence.
VFR. Westerly wind gusts 25-30 kt continue through sundown
(22-23z).
Tonight through Saturday Night: High confidence.
VFR. NW winds around 5-10 kt, becoming light N to NE by late-
afternoon, then turning easterly Saturday night into overnight
Sunday.
KBOS Terminal...High confidence in TAF.
KBDL Terminal...High confidence in TAF.
Outlook /Saturday Night through Wednesday/...
Sunday: VFR. Chance RA.
Sunday Night: MVFR/IFR conditions possible. Breezy. RA.
Columbus Day: Mainly VFR, with local IFR possible. Breezy.
Monday Night: VFR.
Tuesday through Tuesday Night: VFR. Breezy. Chance SHRA.
Wednesday: VFR. Breezy. Slight chance SHRA.
&&
.MARINE...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through Saturday Night: High confidence.
SCAs remain in effect until 7 PM this evening to allow westerly
gusts 25-30 kt to subside. Thereafter, gradually easing NW winds
around 15-20 kt early tonight continue to decrease to around 10-15
kt by Saturday. Light northeasterly winds late Saturday into
Saturday night. Seas 3 ft or less all waters.
Outlook /Saturday Night through Wednesday/...
Sunday: Winds less than 25 kt. Chance of rain.
Sunday Night: Low risk for Small Craft Advisory winds with
local gusts up to 30 kt. Local rough seas. Rain, slight chance
of thunderstorms.
Columbus Day: Winds less than 25 kt. Rough seas up to 9 ft.
Chance of rain.
Monday Night: Winds less than 25 kt. Seas up to 5 ft.
Tuesday: Winds less than 25 kt. Seas up to 5 ft. Chance of rain
showers.
Tuesday Night: Moderate risk for Small Craft Advisory winds
with gusts up to 25 kt. Seas up to 5 ft. Rain showers likely,
slight chance of thunderstorms.
Wednesday: Low risk for Small Craft Advisory winds with gusts
up to 25 kt. Seas up to 5 ft. Chance of rain showers.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 7 PM EDT this evening for
ANZ230>237-250-251-254>256.
&&
$$
DISCUSSION...Belk/Loconto
AVIATION...Belk/Loconto
MARINE...Belk/Loconto
Radar [‒] Radar [+]
Radar images courtesy Weather Underground / Intellicast.
Satellite [‒] Satellite [+]
Satellite images courtesy Weather Underground / Intellicast.
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Precipitation [‒] Precipitation [+]
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:
0.00 in
Rain Today:
0.00 in
Thursday:
0.06 in
October:
24.40 in
2026
Daily Extremes [‒] Daily Extremes [+]
3:17pm
66.6°F
High today:
7:21am
50.0°F
Low today:
2:12pm
70.9°F
High Thursday:
12:59am
54.3°F
Low Thursday:
7:38am
48.4°F
Low wind chill today:
10:37am
50.4°F
High dew pt today:
11:29am
58.5°F
High dew pt Thursday:
3:05pm
16 mph
Wind gust today:
8:14am
12 mph
Wind gust Thursday:
Alerts / Advisories [‒] Alerts / Advisories [+]
No alerts/warnings active for Southeast Middlesex County.
Sun / Moon [‒] Sun / Moon [+]
First Light:
6:23am
Sunrise:
6:51am
Sunset:
6:13pm
Twilight ends:
6:41pm
Daylight length:
11 hours 22 minutes
Phase:
Waning Crescent (1%)
Moon rise:
5:41am
Moon set:
5:30pm
Social Media - Mastodon [‒] Social Media - Mastodon [+]
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