Lexington Weather
Lexington, Massachusetts, USA
- Clear
-
76.1°F / 24.5°C
-
52.5°F
-
44%
- Calm, 10-min avg: Calm, gust: None
-
- 10 miles
- 0.00 in
Current Conditions [‒] Current Conditions [+]
76.1°F
24.5°C
Warm
Clear
This Afternoon: Hi 81 °F
Tonight: Lo 53 °F
Dew Point:
52.5°F
Humidity:
44%
Barometer:
mb
Rain Rate: 0.00 in/hr
Rain Today: 0.00 in
Rain Friday: 0.00 in
Visibility: 10 miles
Wind:
Now: Calm
Avg: Calm
Gusts: 0 mph
Forecast [‒] Forecast [+]
NWS Weather Forecast -
This Afternoon,
Tonight,
&
Sunday
through
Friday Night
Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sat Jul 25, 2026 2:43pm EDT
Overview:
- Fair weather for most areas except the Cape and Islands Sunday and Monday. A Rip Current Statement has been issued for Cape Cod tonight through early Monday.
- Temperatures on the lower end of seasonable as periodic chances for showers and thunderstorms return Mon-Wed (possibly into Thurs). Monitoring for increasing chances of localized heavy rainfall and potentially flash flooding.
This Afternoon:
Sunny
Hi 81 °F
Sunny, with a high near 81. East wind around 9 mph.
Tonight:
Mostly Clear
Lo 53 °F
Mostly clear, with a low around 53. East wind 1 to 8 mph.
Sunday:
Mostly Sunny
Hi 78 °F
Mostly sunny, with a high near 78. Northeast wind 2 to 8 mph.
Sunday Night:
Mostly Clear
Lo 52 °F
Mostly clear, with a low around 52. Northeast wind 1 to 7 mph.
Monday:
Sunny
Hi 82 °F
Sunny, with a high near 82. Northeast wind 1 to 8 mph.
Monday Night:
Partly Cloudy
Lo 62 °F
Partly cloudy, with a low around 62. Southeast wind 3 to 7 mph.
Tuesday:
Showers And T-Storms Likely
Hi 82 °F
A chance of rain showers between 8am and 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 82. South wind 3 to 10 mph. Chance of precipitation is 60%.
Tuesday Night:
Showers And T-Storms Likely
Lo 63 °F
Showers and thunderstorms likely. Mostly cloudy, with a low around 63. Southeast wind 6 to 9 mph. Chance of precipitation is 70%.
Wednesday:
Showers And T-Storms Likely
Hi 77 °F
Showers and thunderstorms likely. Mostly cloudy, with a high near 77. East wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Wednesday Night:
Showers And T-Storms Likely
Lo 62 °F
Showers and thunderstorms likely. Mostly cloudy, with a low around 62. Northeast wind around 8 mph. Chance of precipitation is 70%.
Thursday:
Chance Rain Showers
Hi 81 °F
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. Northeast wind around 8 mph. Chance of precipitation is 50%.
Thursday Night:
Chance Showers And T-Storms
Lo 63 °F
A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 63. Northwest wind around 6 mph. Chance of precipitation is 40%.
Friday:
Mostly Sunny then Slight Chance Showers And T-Storms
Hi 83 °F
A slight chance of showers and thunderstorms between 2pm and 5pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 83. North wind 3 to 7 mph. Chance of precipitation is 30%.
Friday Night:
Slight Chance Showers And T-Storms then Partly Cloudy
Lo 64 °F
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 64. Southwest wind around 5 mph.
NWS Hourly Forecast -
Today 4pm through Mon 3am
Issued by:
National Weather Service Boston / Norton, MA
Updated Sat Jul 25, 2026 2:43pm EDT
4:00pm
Dew Pt 54°F
E 9 mphPrecip: 0%
5:00pm
Dew Pt 53°F
E 8 mphPrecip: 0%
6:00pm
Dew Pt 52°F
E 8 mphPrecip: 0%
7:00pm
Dew Pt 51°F
E 7 mphPrecip: 0%
8:00pm
Dew Pt 52°F
E 5 mphPrecip: 0%
9:00pm
Dew Pt 53°F
SE 3 mphPrecip: 0%
10:00pm
Dew Pt 54°F
SE 2 mphPrecip: 0%
11:00pm
Dew Pt 55°F
SE 2 mphPrecip: 0%
12:00am
Dew Pt 55°F
SE 1 mphPrecip: 0%
1:00am
Dew Pt 55°F
E 1 mphPrecip: 0%
2:00am
Dew Pt 55°F
E 1 mphPrecip: 0%
3:00am
Dew Pt 54°F
NE 1 mphPrecip: 0%
4:00am
Dew Pt 53°F
NE 1 mphPrecip: 0%
5:00am
Dew Pt 53°F
NE 2 mphPrecip: 0%
6:00am
Dew Pt 53°F
NE 2 mphPrecip: 0%
7:00am
Dew Pt 56°F
NE 2 mphPrecip: 0%
8:00am
Dew Pt 57°F
NE 2 mphPrecip: 0%
9:00am
Dew Pt 56°F
NE 3 mphPrecip: 0%
10:00am
Dew Pt 55°F
E 5 mphPrecip: 0%
11:00am
Dew Pt 54°F
E 6 mphPrecip: 0%
12:00pm
Dew Pt 54°F
E 7 mphPrecip: 0%
1:00pm
Dew Pt 53°F
E 7 mphPrecip: 0%
2:00pm
Dew Pt 53°F
E 8 mphPrecip: 0%
3:00pm
Dew Pt 53°F
E 8 mphPrecip: 0%
4:00pm
Dew Pt 52°F
E 8 mphPrecip: 0%
5:00pm
Dew Pt 52°F
E 7 mphPrecip: 0%
6:00pm
Dew Pt 52°F
E 7 mphPrecip: 0%
7:00pm
Dew Pt 52°F
E 6 mphPrecip: 0%
8:00pm
Dew Pt 53°F
E 5 mphPrecip: 0%
9:00pm
Dew Pt 54°F
E 3 mphPrecip: 0%
10:00pm
Dew Pt 55°F
E 2 mphPrecip: 0%
11:00pm
Dew Pt 56°F
E 1 mphPrecip: 0%
12:00am
Dew Pt 56°F
E 1 mphPrecip: 0%
1:00am
Dew Pt 56°F
NE 1 mphPrecip: 0%
2:00am
Dew Pt 56°F
N 1 mphPrecip: 0%
3:00am
Dew Pt 54°F
NW 1 mphPrecip: 0%
FORECAST DISCUSSION
Area Forecast Discussion
for Boston / Norton, MA
000
FXUS61 KBOX 251835
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
235 PM EDT Sat Jul 25 2026
.WHAT HAS CHANGED...
A Rip Current Statement has been issued for Cape Cod from 8
this evening through 7 am Monday.
&&
.KEY MESSAGES...
- Fair weather for most areas except the Cape and Islands
Sunday and Monday. A Rip Current Statement has been issued for
Cape Cod tonight through early Monday.
- Temperatures on the lower end of seasonable as periodic
chances for showers and thunderstorms return Mon-Wed (possibly
into Thurs). Monitoring for increasing chances of localized
heavy rainfall and potentially flash flooding.
&&
.DISCUSSION...
KEY MESSAGE 1...Fair weather for most areas except the Cape and
Islands Sunday and Monday. A Rip Current Statement has been
issued for Cape Cod tonight into Sunday.
Another mostly clear day Sunday as weak high pressure maintains
control. Height falls ahead of an approaching trough and a low
pressure system passing well offshore brings moisture and clouds
to the Cape and Islands Sunday afternoon. Model soundings
indicate a shallow layer of moisture at the surface with dry air
above. It is more likely that this layer will be too shallow to
support any showers/drizzle. A worst case would be some patchy
drizzle for the outer Cape/Islands. Aside from the clouds in
some areas, it will be a mainly dry day with a northeasterly
breeze for the eastern coastal areas. Temperatures likely range
in the low to mid 80s for the interior and mid to upper 70s in
the eastern and coastal areas.
A Rip Current Statement has been issued for the Cape as
easterly winds and prolonged swells leads to a moderate to high
chance for rip currents. While the highest risk exists along the
Cape, an elevated chance of rip currents spans the south and
east coastline with the greatest risk for the east-facing
beaches along the Cape and Islands and portions of the east
coast of MA.
Slightly warmer conditions across the interior on Monday with
925 mb temps warming to +20-23C translating to max temps in the
mid and upper 80s. A deeper shortwave trough moves overhead, and
with associated mid-level cooling should introduce increasing
cloud cover by the afternoon. Guidance shows a 20-40% chance of
showers across western portions of the CWA as forcing and
instability build.
KEY MESSAGE 2...Temperatures on the lower end of seasonable as
periodic chances for showers and thunderstorms return Mon-Wed
(possibly into Thurs). Monitoring for increasing chances of
localized heavy rainfall and potentially flash flooding.
Ensemble guidance has started to come into better consensus
that a low pressure system will traverse through the Great Lakes
Monday/Tuesday and into New England around Wednesday. This
system will likely be accompanied by several embedded shortwaves
and a mid- level trough, bringing chances for a few rounds of
showers, and possibly thunderstorms, Monday through Wednesday...
possibly lingering into Thursday. There continues to be a
strong signal for PWATs 120-170 percent of normal to advect into
the region by Tuesday, with deterministic guidance on the
extreme high end of that range. Some guidance is also honing in
on some potential for the low to slow on approach to New England
as well as slower mid-level wind speeds, which would create an
environment for training storms. Combined with the enhanced
forcing of the low, the higher PWATs and potential for training,
localized heavy rainfall and potentially flash flooding are
becoming something to watch for. Unfortunately, there still
remains a large amount of uncertainty in the guidance regarding
where exactly the low could track, with some models indicating
the low moving further south near NYC and some further north
through northern MA. Depending on where exactly the low tracks,
it's possible the threat ends up west/south of the region or
confined to western portions of southern New England.
Otherwise, high temperatures are expected to remain on the
lower end of seasonable, even dipping to slightly below normal
at times given 850mb temperatures hovering around +12C to +14C
through mid-week.
&&
.AVIATION /18Z SATURDAY THROUGH THURSDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
12z TAF Update...
Saturday night...Moderate confidence.
VFR for most. Very low chance of some marginal VFR/MVFR
conditions across Cape and Island terminals. Best chance would
be ACK after 05z. Otherwise, light and variable winds.
Sunday...High confidence overall (Moderate for cigs in far
east).
VFR for most. Uncertainty in the potential for low clouds in
eastern MA and how far west they extend will be the main
challenge. Greatest risk for Cape and Nantucket with MVFR
ceilings possible. E winds for the interior 5-10 kts. NE winds
for east coast terminals 8-12 kts.
KBOS Terminal...High confidence in TAF.
KBDL Terminal...High confidence in TAF.
Outlook /Monday through Thursday/...
Monday: VFR.
Monday Night: VFR. Slight chance SHRA.
Tuesday: Mainly VFR, with local MVFR possible. Breezy. Chance
SHRA, chance TSRA.
Tuesday Night: Mainly MVFR, with local IFR possible. Breezy.
SHRA likely, chance TSRA.
Wednesday: Mainly VFR, with areas MVFR possible. Breezy. SHRA
likely, chance TSRA.
Wednesday Night through Thursday: VFR. Breezy. 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 Tuesday...High confidence.
Light winds and seas 1-4 ft through Monday. Increasing winds
and seas for Sunday; however, below SCA. NE winds 8-12 kts with
gusts to 20 kts and seas 2-4 ft with 5 ft for the outermost
southern waters. Seas increase to 4-6 ft later Tuesday afternoon
with SCA conditions becoming More likely.
Increased risk for rip currents Sunday with the greatest risk
for the east-facing beaches/coastline.
Outlook /Monday
Monday: Winds less than 25 kt. Seas locally approaching 5 ft.
Monday Night: Winds less than 25 kt.
Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Chance of rain showers.
Tuesday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Seas up to 5 ft. Chance of rain showers,
slight chance of thunderstorms.
Wednesday: Low 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 Night: Winds less than 25 kt. Seas up to 5 ft. Chance
of rain showers.
Thursday: Winds less than 25 kt. Rough seas up to 9 ft. Slight
chance of rain showers.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...High Risk for Rip Currents from 8 PM EDT this evening through
Monday morning for MAZ022.
RI...None.
MARINE...None.
&&
$$
DISCUSSION...McMinn/FT
AVIATION...McMinn/FT
MARINE...McMinn/FT
Radar [‒] Radar [+]
Radar images courtesy Weather Underground / Intellicast.
Satellite [‒] Satellite [+]
Satellite images courtesy Weather Underground / Intellicast.
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UV Forecast [‒] UV Forecast [+]
UV Index forecast from the Environmental Protection Agency
UV Index forecast high for today: 8 Very High
Current (Estimated): 4 Medium
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
Friday:
3.94 in
July:
15.76 in
2026
Daily Extremes [‒] Daily Extremes [+]
1:08pm
80.2°F
High today:
6:19am
58.8°F
Low today:
1:56pm
82.2°F
High Friday:
5:42am
58.6°F
Low Friday:
8:34am
59.0°F
High dew pt today:
10:05am
61.2°F
High dew pt Friday:
1:07pm
80.6°F
High heat index today:
1:56pm
82.1°F
High heat index Friday:
12:14pm
7 mph
Wind gust today:
1:53pm
6 mph
Wind gust Friday:
Alerts / Advisories [‒] Alerts / Advisories [+]
No alerts/warnings active for Southeast Middlesex County.
Sun / Moon [‒] Sun / Moon [+]
First Light:
4:58am
Sunrise:
5:31am
Sunset:
8:12pm
Twilight ends:
8:45pm
Daylight length:
14 hours 42 minutes
Phase:
Waxing Gibbous (87%)
Moon set:
1:26am
Moon rise:
5:51pm
Social Media - Mastodon [‒] Social Media - Mastodon [+]
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