Lexington, Massachusetts, USA
35.1°F
1.7°C
Cold
Mostly cloudy
Today: Hi 73 °F
Tonight: Lo 53 °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 Nov 3, 2026 8:59am EST
- Unseasonable warmth and dry weather hold through at least mid to late week. Maximum temperatures peak in the upper 60s to low and mid 70s potentially putting daily records in jeopardy.
- Unsettled weather with continued warmer temperatures expected later this week heading into the weekend, which would feature periodic chances for rain.
Partly Sunny
Hi 73 °F
Partly sunny. High near 73, with temperatures falling to around 66 in the afternoon. Southwest wind around 5 mph.
Partly Cloudy
Lo 53 °F
Partly cloudy, with a low around 53. Southwest wind around 6 mph.
Sunny
Hi 75 °F
Sunny. High near 75, with temperatures falling to around 69 in the afternoon. Southwest wind 6 to 9 mph.
Partly Cloudy
Lo 56 °F
Partly cloudy, with a low around 56. Southwest wind around 7 mph.
Partly Sunny
Hi 74 °F
Partly sunny, with a high near 74. Southwest wind 6 to 10 mph, with gusts as high as 23 mph.
Mostly Cloudy then Chance Light Rain
Lo 60 °F
A chance of rain after 1am. Mostly cloudy, with a low around 60. Southwest wind 5 to 8 mph. Chance of precipitation is 50%.
Rain Likely
Hi 70 °F
A chance of rain before 7am, then rain likely and a chance of thunderstorms. Mostly cloudy, with a high near 70. South wind around 6 mph. Chance of precipitation is 70%.
Rain
Lo 55 °F
Rain and a chance of thunderstorms. Cloudy, with a low around 55. East wind around 6 mph. Chance of precipitation is 80%.
Light Rain
Hi 64 °F
Rain. Mostly cloudy, with a high near 64. North wind around 7 mph. Chance of precipitation is 80%.
Chance Light Rain
Lo 47 °F
A chance of rain. Mostly cloudy, with a low around 47. Northwest wind around 6 mph. Chance of precipitation is 50%.
Chance Light Rain
Hi 60 °F
A chance of rain before 2pm. Mostly sunny, with a high near 60. Northwest wind around 6 mph. Chance of precipitation is 30%.
Partly Cloudy
Lo 43 °F
Partly cloudy, with a low around 43. West wind around 3 mph.
Chance Light Rain
Hi 58 °F
A chance of rain. Partly sunny, with a high near 58. West wind around 7 mph. Chance of precipitation is 30%.
Chance Light Rain
Lo 41 °F
A chance of rain. Mostly cloudy, with a low around 41. West wind around 8 mph.
Issued by:
National Weather Service Boston / Norton, MA
Updated Tue Nov 3, 2026 8:59am EST

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000
FXUS61 KBOX 031747
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
1247 PM EST Tue Nov 3 2026
.WHAT HAS CHANGED...
No significant changes to the forecast since the last update.
&&
.KEY MESSAGES...
- Unseasonable warmth and dry weather hold through at least mid
to late week. Maximum temperatures peak in the upper 60s to
low and mid 70s potentially putting daily records in jeopardy.
- Unsettled weather with continued warmer temperatures expected
later this week heading into the weekend, which would feature
periodic chances for rain.
&&
.DISCUSSION...
KEY MESSAGE 1...Dry with anomalous warmth continuing into mid-week.
Daily high in the upper 60s to low 70s, with isolated readings into
the mid-70s flirting with daily records.
High confidence in continued dry and warm conditions through late
week. Mid-level ridge remains dominant across the eastern CONUS,
with the ridge axis moving over the region through at least
Wednesday. Deep-layer subsidence combined with 925mb temps in the
+11C to +14C range will yield an uncharacteristically warm airmass
through Friday. Dry soil conditions and full solar insolation will
continue the chance for high temps to overperform vs the NBM/MOS
consensus. Thus, have bumped high temperatures on Wednesday and
Thursday in the CT and Merrimack Valleys up 3-5 degrees. Doing so
yields highs in the mid and even upper 70s across these
regions. These readings would potentially challenge daily
maximum temperature records both Wednesday and Thursday.
Additionally, a SSW return flow will help to increase surface
dew point temperatures into the 50s and 60s Wednesday night
through Friday. This results in elevated nocturnal minimums and
so both high and low maximum temperature records may be
challenged through the week. More details in the climate section
below.
KEY MESSAGE 2...Unsettled weather with continued warmer
temperatures expected later this week heading into the weekend,
which would feature periodic chances for rain.
A thermal ridge is expected to continue building over southern New
England towards the midweek timeframe, which will be supportive of
above-normal temperatures continuing for Wednesday and Thursday this
week. 925 mb temperatures between 12-16C along with SW to S flow
will bring the possibility of highs in the upper 60s into the
low/mid 70s across southern New England Wednesday and Thursday.
Ensembles have quite high probabilities of highs exceeding 70F
Wednesday afternoon, and these remain somewhat elevated (up to 90%
in southern parts of the coastal plain) for Thursday afternoon as
well. Guidance doesn't indicate much with regards to a return to
more mild temperatures until the second half of the weekend as the
ridging shifts off to the east, but that could vary depending on how
the approaching system evolves and tracks across the region.
Ensembles have continued to show a consensus with regards to the
return of more unsettled weather for the second half of this week. A
mid to upper level trough is expected to move in from the west,
which will help advect in an anomalous moisture plume around 2 to 3
standard deviations above normal over southern New England. Closer
to the surface, a frontal system associated with a previously more
developed low pressure is expected to track across the region,
bringing good chances for wetting rains towards the end of the week.
Exact timing is still a bit uncertain, but latest guidance is
leaning towards onset being Thursday evening at the earliest in
western MA and CT, then tracking eastward through Friday. Showers
may even linger into Sunday for parts of the region. Ensemble
probabilities with regards to totals have not changed much from the
overnight forecast, with probabilities for 24-hr totals >= 0.5"
(period ending Saturday morning) generally between 30-70% across
ensemble suites. Notably, though, the Canadian and ECMWF ensembles
distribute these probabilities across the majority of southern New
England as the front tracks from west to east, while the GEFS has a
more focused footprint of higher probabilities and totals over Cape
Cod and some of the coastal plain in SE MA. Given the spread in
guidance, there is still decent uncertainty regarding the
progression and development of the surface features that would
really enhance rainfall totals and even introduce the chance for
some rumbles of thunder.
&&
.AVIATION /18Z TUESDAY THROUGH SUNDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
18z TAF Update:
Today and Tonight...High confidence.
VFR. Mid level ceilings this afternoon and tonight. Low chance
for development of a low stratus deck across the south coast and
Cape/Islands 06-12Z. Not high enough confidence to include in
TAFs. Winds generally SW at 5-15 kts this afternoon. Light SSE
winds for a period early this afternoon before shifting to the
S/SSW by 21Z.
Wednesday...High confidence.
VFR. SCT higher decks possible during the day. Areas of lower
FEW/SCT cloud decks can't be ruled out along the south
coast/Cape terminals. Winds SSW/SW at 5-15 kts. Few gusts to 18
kts for ORH and Cape/Island terminals in afternoon.
KBOS Terminal...High confidence in TAF.
Lighter winds have resulted in a weak sea breeze early this
afternoon. SSE winds possible until winds mix out a little more
and increase above 06 kts (by 21Z).
KBDL Terminal...High confidence in TAF.
Outlook /Wednesday through Sunday/...
Wednesday: VFR. Breezy.
Wednesday Night: VFR.
Thursday: Mainly VFR, with local MVFR possible. Breezy. Slight
chance RA.
Thursday Night: Mainly VFR, with local MVFR possible. Chance
RA.
Friday: Mainly VFR, with local IFR possible. RA likely, slight
chance TSRA.
Friday Night: Mainly MVFR, with local IFR possible. RA, slight
chance TSRA.
Saturday through Saturday Night: VFR. Chance RA.
Sunday: VFR. Slight chance RA.
&&
.MARINE...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Through Wednesday...High confidence.
An upper level ridge of high pressure will keep winds/seas below
small craft advisory thresholds through the middle of the week.
Nonetheless...we may have some SW wind gusts of 20+ knots at times
particularly nearshore during the afternoons. This may result in
some choppy seas at times...but thinking we should remain below the
need for headlines. Greatest chance of 20+ knot winds is this
afternoon across the SE waters.
Outlook /Wednesday through Sunday/...
Wednesday: Winds less than 25 kt. Patchy fog. Local visibility
1 to 3 nm.
Wednesday Night: Winds less than 25 kt.
Thursday: Winds less than 25 kt. Seas locally approaching 5 ft.
Thursday Night: Winds less than 25 kt. Seas up to 5 ft. Chance
of rain.
Friday: Winds less than 25 kt. Seas up to 5 ft. Rain likely,
slight chance of thunderstorms.
Friday Night: Winds less than 25 kt. Seas up to 5 ft. Rain,
slight chance of thunderstorms.
Saturday: Winds less than 25 kt. Rough seas up to 9 ft. Rain,
slight chance of thunderstorms.
Saturday Night: Winds less than 25 kt. Rough seas up to 10 ft.
Chance of rain.
Sunday: Winds less than 25 kt. Rough seas up to 7 ft. Chance of
rain.
&&
.CLIMATE...
Persistent unseasonable warmth over the next several day will
challenge calendar-day record highs and record high minimums
across southern New England climate sites.
Daily Record Highs to Watch:
Boston (BOS): Wednesday 78F (1987)|Thursday 79F (1994)
Hartford/Bradley (BDL): Wednesday 78F (1987)|Thursday 75F (2022)
Providence (PVD): Wednesday 77F (1987)|Thursday 75F (1994)
Worcester (ORH): Wednesday 74F (1987)|Thursday 73F (1994)
Daily Record Lows to Watch:
Boston (BOS): Thursday 56F (1994)|Friday 57F (2020)
Hartford/Bradley (BDL): Thursday 55F (1994)|Friday 56F (2020)
Providence (PVD): Thursday 56F (1994)|Friday 58F (2020)
Worcester (ORH): Thursday 55F (1994)| 55F (2020)
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...None.
&&
$$
DISCUSSION...Hrencecin/FT
AVIATION...Mensch/FT
MARINE...Hrencecin/FT
CLIMATE...FT
Radar images courtesy Weather Underground / Intellicast.
UV Index forecast high for today: 3 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
November:
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.
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 Crescent (82%)
Moon set:
8:18am
Moon rise:
9:38pm