Lexington Weather
Lexington, Massachusetts, USA
- Clear
-
55.4°F / 13.0°C
-
26.1°F
-
32%
- Calm, 10-min avg: Calm, gust: 6 mph
-
- 10 miles
- 0.00 in
Current Conditions [‒] Current Conditions [+]
55.4°F
13.0°C
Cool
Clear
This Afternoon: Hi 56 °F
Tonight: Lo 43 °F
Dew Point:
26.1°F
Humidity:
32%
Barometer:
mb
Rain Rate: 0.00 in/hr
Rain Today: 0.00 in
Rain Saturday: 0.00 in
Visibility: 10 miles
Wind:
Now: Calm
Avg: Calm
Gusts: 6 mph
Forecast [‒] Forecast [+]
NWS Weather Forecast -
This Afternoon,
Tonight,
&
Monday
through
Saturday Night
Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sun Apr 12, 2026 12:58pm EDT
This Afternoon:
Partly Sunny
Hi 56 °F
Partly sunny, with a high near 56. South wind 7 to 10 mph.
Tonight:
Scattered Rain Showers
Lo 43 °F
Scattered rain showers after 7pm. Cloudy, with a low around 43. South wind 10 to 15 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday:
Scattered Rain Showers
Hi 69 °F
Scattered rain showers. Mostly cloudy, with a high near 69. Southwest wind around 18 mph, with gusts as high as 31 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Monday Night:
Scattered Rain Showers then Partly Cloudy
Lo 58 °F
Scattered rain showers before 9pm. Partly cloudy, with a low around 58. Southwest wind 6 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Tuesday:
Mostly Sunny then Scattered Rain Showers
Hi 80 °F
Scattered rain showers after 3pm. Mostly sunny, with a high near 80. Southwest wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Tuesday Night:
Scattered Rain Showers
Lo 61 °F
Scattered rain showers before 2am. Mostly cloudy, with a low around 61. Southwest wind 6 to 9 mph. Chance of precipitation is 40%.
Wednesday:
Partly Sunny then Chance Rain Showers
Hi 79 °F
A chance of rain showers after 2pm. Partly sunny, with a high near 79. West wind around 8 mph. Chance of precipitation is 30%.
Wednesday Night:
Chance Rain Showers
Lo 56 °F
A chance of rain showers. Mostly cloudy, with a low around 56. Northwest wind around 7 mph. Chance of precipitation is 40%.
Thursday:
Chance Rain Showers
Hi 74 °F
A chance of rain showers. Mostly cloudy, with a high near 74. East wind 5 to 8 mph. Chance of precipitation is 40%.
Thursday Night:
Chance Rain Showers
Lo 56 °F
A chance of rain showers. Mostly cloudy, with a low around 56. South wind 5 to 8 mph. Chance of precipitation is 40%.
Friday:
Slight Chance Rain Showers
Hi 76 °F
A slight chance of rain showers. Partly sunny, with a high near 76. Northwest wind 5 to 8 mph.
Friday Night:
Slight Chance Rain Showers then Partly Cloudy
Lo 52 °F
A slight chance of rain showers before 8pm. Partly cloudy, with a low around 52. North wind around 6 mph.
Saturday:
Mostly Sunny
Hi 70 °F
Mostly sunny, with a high near 70. East wind 5 to 9 mph.
Saturday Night:
Chance Rain Showers
Lo 52 °F
A chance of rain showers after 8pm. Mostly cloudy, with a low around 52. South wind around 8 mph.
NWS Hourly Forecast -
Today 2pm through Tue 1am
Issued by:
National Weather Service Boston / Norton, MA
Updated Sun Apr 12, 2026 12:58pm EDT
2:00pm
Dew Pt 23°F
S 8 mphPrecip: 0%
3:00pm
Dew Pt 23°F
S 9 mphPrecip: 0%
4:00pm
Dew Pt 24°F
S 10 mphPrecip: 0%
5:00pm
Dew Pt 24°F
S 10 mphPrecip: 0%
6:00pm
Dew Pt 25°F
S 10 mphPrecip: 7%
7:00pm
Dew Pt 27°F
S 10 mphPrecip: 18%
8:00pm
Dew Pt 28°F
Wind Chill: 46°F
S 10 mphPrecip: 17%
Rain: 0.01 in
9:00pm
Dew Pt 30°F
Wind Chill: 43°F
S 12 mphPrecip: 26%
Rain: 0.01 in
10:00pm
Dew Pt 30°F
Wind Chill: 41°F
S 12 mphPrecip: 36%
Rain: 0.02 in
11:00pm
Dew Pt 31°F
Wind Chill: 38°F
S 12 mphPrecip: 45%
Rain: 0.02 in
12:00am
Dew Pt 33°F
Wind Chill: 37°F
S 12 mphPrecip: 44%
Rain: 0.02 in
1:00am
Dew Pt 35°F
Wind Chill: 38°F
S 13 mphPrecip: 43%
Rain: 0.02 in
2:00am
Dew Pt 36°F
Wind Chill: 38°F
S 13 mphPrecip: 42%
Rain: 0.01 in
3:00am
Dew Pt 37°F
Wind Chill: 39°F
S 14 mphPrecip: 35%
Rain: 0.01 in
4:00am
Dew Pt 38°F
Wind Chill: 38°F
S 15 mphPrecip: 29%
Rain: 0.01 in
5:00am
Dew Pt 39°F
Wind Chill: 40°F
S 15 mphPrecip: 22%
6:00am
Dew Pt 39°F
Wind Chill: 41°F
S 16 mphPrecip: 16%
7:00am
Dew Pt 40°F
Wind Chill: 42°F
SW 17 mphPrecip: 11%
8:00am
Dew Pt 41°F
Wind Chill: 44°F
SW 18 mphPrecip: 5%
9:00am
Dew Pt 43°F
SW 18 mphPrecip: 7%
10:00am
Dew Pt 44°F
SW 17 mphPrecip: 9%
11:00am
Dew Pt 46°F
SW 16 mphPrecip: 11%
12:00pm
Dew Pt 47°F
SW 17 mphPrecip: 14%
1:00pm
Dew Pt 47°F
SW 17 mphPrecip: 18%
Rain: 0.01 in
2:00pm
Dew Pt 48°F
SW 17 mphPrecip: 21%
3:00pm
Dew Pt 49°F
SW 17 mphPrecip: 24%
4:00pm
Dew Pt 49°F
SW 17 mphPrecip: 27%
5:00pm
Dew Pt 50°F
SW 17 mphPrecip: 30%
6:00pm
Dew Pt 51°F
SW 16 mphPrecip: 28%
7:00pm
Dew Pt 53°F
SW 15 mphPrecip: 25%
8:00pm
Dew Pt 54°F
SW 14 mphPrecip: 16%
9:00pm
Dew Pt 55°F
SW 12 mphPrecip: 14%
10:00pm
Dew Pt 55°F
SW 10 mphPrecip: 12%
11:00pm
Dew Pt 55°F
SW 8 mphPrecip: 10%
12:00am
Dew Pt 55°F
SW 7 mphPrecip: 9%
1:00am
Dew Pt 55°F
W 7 mphPrecip: 7%
FORECAST DISCUSSION
Area Forecast Discussion
for Boston / Norton, MA
000
FXUS61 KBOX 121140
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
740 AM EDT Sun Apr 12 2026
.WHAT HAS CHANGED...
Small Craft Advisories and Gale Watches issued for our coastal
waters late tonight and Monday. Confidence continues to increase
in well above normal summer-like warmth for much of the work
week, at least away from the immediate coast.
&&
.KEY MESSAGES...
- Dry weather today with highs in the 50s to near 60, but cooler
upper 40s to lower 50s on parts of the immediate coast. A few
showers tonight, mainly across northern MA. Gusty southerly
winds develop toward daybreak Mon.
- Summer-like warmth much of the work week with highs in the 70s
and 80s at least away from the immediate coast. A few showers
and thunderstorms are possible at times, but dry weather
dominates.
&&
.DISCUSSION...
KEY MESSAGE 1...Dry weather today with highs in the 50s to near
60, but cooler upper 40s to lower 50s on parts of the immediate
coast. A few showers tonight, mainly across northern MA. Gusty
southerly winds develop toward daybreak Mon.
Large high pressure gradually shifts east of the region today.
This will result in seasonable/pleasant weather to close out
the weekend...But with much less wind than yesterday. Plenty of
sunshine is also expected this morning...but we should see mid-
high level cloudiness increase and thicken this afternoon out
ahead of an approaching shortwave. High temperatures today will
mainly be in the 50s to perhaps near 60 in spots...but cooler
upper 40s to the lower 50s are expected along parts of the
immediate coast with sea breezes.
A warm front and associated shortwave energy crosses the region
tonight. The deeper moisture and stronger forcing will be
located to our north across northern New England where the bulk
of the showers will reside. Nonetheless...a few showers are
expected tonight mainly across northern MA closer to the better
forcing. Any rainfall amounts though should be rather light. Low
temperatures will be in the 40s...but many locations will rise
to around 50+ toward daybreak Mon as warm advection increases.
In fact...a 45 to 55+ knot southwest LLJ will result in gusty
southwest winds developing toward daybreak.
KEY MESSAGE 2...Summer-like warmth much of the work week with
highs in the 70s and 80s at least away from the immediate coast.
A few showers and thunderstorms are possible at times, but dry
weather dominates.
All of our model guidance continues to support well above normal
temperatures for most of the work week. On Monday...strong warm
advection aloft/southwest LLJ will result in a lot of clouds,
gusty southwest winds and the risk for a few showers at times.
High temps will mainly be in the 60s to the lower 70s...but
cooler along the south coast given gusty southwest winds.
The real warmth looks to arrive Tue and continue for the rest of
the work week. A strong upper level ridge over the Gulf of
Mexico will result in well above normal height fields across the
region. This should yield high temps in the 70s and 80s for the
rest of the work week...At least away from the immediate coast.
We will have to watch for a backdoor cold front lurking to our
north. Most of the guidance keeps it generally north of us
during the work week except for areas near the eastern MA
coast...where temps could be noticeably cooler for a day or two
than the rest of the region. We also should mention that
sometimes these backdoor cold fronts end up further south than
the global guidance suggests...so this will be one potential fly
in the ointment. Again right now thinking outside the immediate
coast...odds favor summerlike warmth for the rest of the week.
But given our climatology...still a bit cautious until we get
into more of the high resolution CAMs which handle these
situations better.
While much of the upcoming week will be dry...there will be the
risk for a few showers/t-storms at times. Westerly flow aloft
coupled with an anomalous airmass in place will result in this
potential especially during the afternoon/evening hours. That
being said...timing of any shortwaves in westerly flow aloft is
often difficult. Just something to keep in mind. FWIW...the CSU
machine learning probs do even has some low severe probs across
the region on Tue.
&&
.AVIATION /12Z SUNDAY THROUGH THURSDAY/...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
High confidence.
Mainly VFR conditions continue today through Monday. A few
showers tonight mainly across northern MA may result in briefly
lower/localized conditions. We also should see MVFR-IFR
conditions in low clouds and fog patches develop near the south
coast during the day Monday as high dewpoint air begins to work
over the relatively cold ocean.
Light and variable winds early this morning become S at 6-12 kt
this afternoon, but with localized sea breezes developing along
parts of the immediate coast. SW winds will increase very late
tonight and especially Monday with gusts of 20 to 30 kt
expected, strongest of which will be near the south coast. In
fact, we may see southwest wind gusts near 35 knots in the
vicinity of KFMH given pattern recognition.
KBOS Terminal... High confidence in TAF. Sea breeze should
develop by 14z this morning.
KBDL Terminal... High confidence in TAF.
Outlook /Monday Night through Thursday/...
Monday Night: VFR. Breezy.
Tuesday through Tuesday Night: VFR. Breezy. Scattered SHRA.
Wednesday through Wednesday Night: VFR. Chance SHRA, slight
chance TSRA.
Thursday: VFR. Chance SHRA.
&&
.MARINE...
Forecaster Confidence Levels...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Today through Monday...High confidence.
Winds/seas will remain below Small Craft Advisory thresholds
today. However, a strengthening LLJ very late tonight and
especially Monday will result in SW wind gusts of 25 to 30+ kt
over all the waters and potentially some nearshore 35 kt gusts
in the climatologically favorable locations in this setup near
Buzzards/Cape Cod Bays as well as Block Island and Nantucket
sounds. Therefore, we opted to issue a Gale Watch for those
waters on Monday. Lastly, will need to watch for the development
of fog across the southern waters on Monday as high dewpoint air
advects northward over the relatively cold ocean.
Outlook /Monday Night through Thursday/...
Monday Night: Low risk for Small Craft Advisory winds with
gusts up to 30 kt. Areas of rough seas. Slight chance of rain
showers.
Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Tuesday Night: Winds less than 25 kt. Seas locally approaching
5 ft. Isolated rain showers.
Wednesday: Winds less than 25 kt. Seas locally approaching
5 ft. Slight chance of rain showers.
Wednesday Night: Winds less than 25 kt. Areas of seas
approaching 5 ft. Chance of rain showers.
Thursday: Winds less than 25 kt. Areas of seas approaching
5 ft. Slight chance of rain showers.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory from 2 AM to 8 PM EDT Monday for ANZ230-
236.
Gale Watch from Monday morning through Monday afternoon for
ANZ231>234.
Small Craft Advisory from 2 AM Monday to 5 AM EDT Tuesday for
ANZ235-237.
Small Craft Advisory from 10 PM this evening to 2 AM EDT
Tuesday for ANZ250-251.
Small Craft Advisory from 2 AM Monday to 8 AM EDT Tuesday for
ANZ254>256.
&&
$$
DISCUSSION...Frank
AVIATION...Belk/Frank
MARINE...Frank
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: 6 High
Current (Estimated): 5 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
Saturday:
0.65 in
April:
6.27 in
2026
51.1 in
Season Snow:
1 snow day in April
Daily Extremes [‒] Daily Extremes [+]
1:46pm
55.6°F
High today:
7:00am
35.8°F
Low today:
2:00pm
60.1°F
High Saturday:
11:57pm
44.6°F
Low Saturday:
7:00am
35.8°F
Low wind chill today:
11:27pm
42.4°F
Low wind chill Saturday:
12:43pm
31.3°F
High dew pt today:
6:07am
44.8°F
High dew pt Saturday:
12:32am
7 mph
Wind gust today:
10:45am
17 mph
Wind gust Saturday:
Alerts / Advisories [‒] Alerts / Advisories [+]
No alerts/warnings active for Southeast Middlesex County.
Expected Snow [‒] Expected Snow [+]
72-Hour Snowfall Forecast
No snow expected in Lexington.
Sun / Moon [‒] Sun / Moon [+]
First Light:
5:39am
Sunrise:
6:08am
Sunset:
7:23pm
Twilight ends:
7:52pm
Daylight length:
13 hours 15 minutes
Phase:
Waning Crescent (26%)
Moon rise:
3:49am
Moon set:
2:00pm
Social Media - Mastodon [‒] Social Media - Mastodon [+]
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