Lexington Weather
Lexington, Massachusetts, USA
- Overcast
-
62.8°F / 17.1°C
-
61.3°F
- 95%
-
SW Calm, 10-min avg: 1 mph, gust: 8 mph
- 10 miles
- 0.64 in
National Weather Service Forecast for:
Lexington, MA
Issued by:
National Weather Service Boston / Norton, MA
Tonight through Saturday
Point Forecast Updated Sat Apr 26, 2025 7:20pm EDT
Overview:
Lingering rain will move out of the region, and a cold front then ushers in a much cooler airmass tonight. Cloudy, cool, and blustery conditions on Sunday. High pressure returns with dry conditions for Monday and Tuesday, along with mild to warm temperatures. A cold front moves across the region on Wednesday with a few showers possible late Tuesday night into early Wednesday morning. Seasonable temperatures to end the week with the next chance for rain by Friday.
Tonight:
Rain Showers
Lo 44 °F
Rain showers before 1am. Mostly cloudy, with a low around 44. West wind 8 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
Sunday:
Partly Sunny then Slight Chance Light Rain
Hi 55 °F
A slight chance of rain after 4pm. Partly sunny, with a high near 55. West wind 10 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Sunday Night:
Slight Chance Light Rain then Partly Cloudy
Lo 48 °F
A slight chance of rain before 7pm. Partly cloudy, with a low around 48. Northwest wind 10 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
Monday:
Sunny
Hi 72 °F
Sunny, with a high near 72. Northwest wind around 9 mph.
Monday Night:
Mostly Clear
Lo 49 °F
Mostly clear, with a low around 49. West wind 2 to 6 mph.
Tuesday:
Mostly Sunny
Hi 77 °F
Mostly sunny, with a high near 77. Southwest wind 3 to 13 mph.
Tuesday Night:
Slight Chance Rain Showers
Lo 59 °F
A slight chance of rain showers between 10pm and 2am. Mostly cloudy, with a low around 59. Southwest wind around 12 mph, with gusts as high as 22 mph.
Wednesday:
Mostly Sunny
Hi 74 °F
Mostly sunny, with a high near 74. West wind around 13 mph, with gusts as high as 23 mph.
Wednesday Night:
Partly Cloudy
Lo 46 °F
Partly cloudy, with a low around 46. Northwest wind 6 to 10 mph.
Thursday:
Mostly Sunny
Hi 67 °F
Mostly sunny, with a high near 67. Southwest wind around 7 mph.
Thursday Night:
Mostly Cloudy then Chance Rain Showers
Lo 49 °F
A chance of rain showers after midnight. Mostly cloudy, with a low around 49. South wind around 7 mph. Chance of precipitation is 40%.
Friday:
Rain Showers Likely
Hi 68 °F
Rain showers likely. Mostly cloudy, with a high near 68. South wind 5 to 10 mph. Chance of precipitation is 60%.
Friday Night:
Rain Showers Likely
Lo 53 °F
Rain showers likely. Mostly cloudy, with a low around 53. Southwest wind around 9 mph. Chance of precipitation is 60%.
Saturday:
Chance Rain Showers
Hi 68 °F
A chance of rain showers. Partly sunny, with a high near 68. Southwest wind 7 to 10 mph. Chance of precipitation is 40%.
Tonight 8pm through Sun 7pm EDT
Updated Sat Apr 26, 2025 7:20pm EDT
8:00pm
Dew Pt 59°F
SW 9 mphPrecip: 79%
Rain: 0.02 in
9:00pm
Dew Pt 57°F
SW 8 mphPrecip: 42%
Rain: 0.01 in
10:00pm
Dew Pt 54°F
W 10 mphPrecip: 55%
Rain: 0.02 in
11:00pm
Dew Pt 49°F
W 13 mphPrecip: 38%
Rain: 0.01 in
12:00am
Dew Pt 46°F
W 13 mphPrecip: 26%
Rain: 0.01 in
1:00am
Dew Pt 43°F
W 14 mphPrecip: 0%
2:00am
Dew Pt 40°F
Wind Chill: 44°F
W 13 mphPrecip: 0%
3:00am
Dew Pt 39°F
Wind Chill: 42°F
W 12 mphPrecip: 0%
4:00am
Dew Pt 38°F
Wind Chill: 41°F
W 12 mphPrecip: 0%
5:00am
Dew Pt 37°F
Wind Chill: 40°F
W 10 mphPrecip: 0%
6:00am
Dew Pt 36°F
Wind Chill: 40°F
W 10 mphPrecip: 0%
7:00am
Dew Pt 37°F
Wind Chill: 39°F
W 12 mphPrecip: 0%
8:00am
Dew Pt 37°F
Wind Chill: 41°F
W 13 mphPrecip: 2%
9:00am
Dew Pt 38°F
Wind Chill: 43°F
W 13 mphPrecip: 2%
10:00am
Dew Pt 37°F
Wind Chill: 45°F
W 13 mphPrecip: 3%
11:00am
Dew Pt 38°F
W 14 mphPrecip: 4%
12:00pm
Dew Pt 38°F
W 15 mphPrecip: 5%
1:00pm
Dew Pt 38°F
W 16 mphPrecip: 4%
2:00pm
Dew Pt 38°F
NW 16 mphPrecip: 5%
3:00pm
Dew Pt 37°F
NW 17 mphPrecip: 11%
4:00pm
Dew Pt 37°F
NW 17 mphPrecip: 17%
5:00pm
Dew Pt 36°F
NW 17 mphPrecip: 23%
6:00pm
Dew Pt 36°F
NW 17 mphPrecip: 17%
7:00pm
Dew Pt 37°F
Wind Chill: 45°F
NW 15 mphPrecip: 11%
FORECAST DISCUSSION
Area Forecast Discussion
for Boston / Norton, MA
000
FXUS61 KBOX 270017
AFDBOX
Area Forecast Discussion
National Weather Service Boston/Norton MA
817 PM EDT Sat Apr 26 2025
.SYNOPSIS...
Lingering rain will move out of the region, and a cold front
then ushers in a much cooler airmass tonight. Cloudy, cool, and
blustery conditions on Sunday. High pressure returns with dry
conditions for Monday and Tuesday, along with mild to warm
temperatures. A cold front moves across the region on Wednesday
with a few showers possible late Tuesday night into early
Wednesday morning. Seasonable temperatures to end the week with
the next chance for rain by Friday.
&&
.NEAR TERM /UNTIL 6 AM SUNDAY MORNING/...
Key Messages:
* Drying out with dropping temperatures and gusty winds with
frontal passage tonight
Updated rainfall chances through this evening using timing from
the last few runs of the HRRR. Expecting most of southern New
England to be dry by midnight EDT. Latest SPC mesoanalysis
showed a rapid trend for increasing stability. The greatest risk
for any thunderstorms will be before 9 PM EDT. Still expecting
gusty west winds to develop behind a cold front moving across
southern New England this evening.
Previous Discussion...
Any lingering rain will exit the region tonight around midnight
and a cold front will progress through, which will also help
clear some of today's cloud cover. Gusty west winds to around
25 knots will be possible. Drier conditions take hold as this
cooler and drier airmass moves in; dewpoints expected to fall
from the 50s and 60s down to the 30s and 40s, and PWATs decrease
down to around 0.5". Lows tonight expected to be in the low 40s
across the interior, with mid 40s for much of the coastal plain
into the Cape and Islands.
&&
.SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/...
Key Messages:
* Cool and blustery before winds diminish overnight
Clouds return for Sunday due to the cyclonic flow aloft from a
trough sitting over the region. Winds shift more NW as the day
goes on. CAA will continue to promote the mixing of winds aloft
down to the surface, fueling gusts to 35 kt in the highest
elevations. Most guidance is indicating that the highest winds
are possible in the afternoon to evening hours when the core of
the 50-60 kt jet will be over much of southern New England as
the trough continues to move east. However, the mixing of the
strongest winds may be cut off as the jet decouples in the
evening hours, so held off on any wind headlines for the time
being. Clear conditions make a return Sunday night as high
pressure begins to move in after the low exits. Highs Sunday are
expected to be in the 50s, and lows Sunday night should be in
the 40s.
&&
.LONG TERM /MONDAY THROUGH SATURDAY/...
Key Messages:
* Much warmer with dry conditions Monday and Tuesday. A few
showers are possible Tuesday night into Wednesday morning
ahead of an approaching cold front.
* Near seasonable temperatures Thursday and Friday. While
Thursday is likely dry, rain chances return for Friday.
High pressure moves off the Mid Atlantic coast early neat week,
but extends far enough north into New England to maintain dry
weather through Tuesday. Our region will also be on the warmer
side of this high pressure with increasing southwest winds,
especially Tuesday.
A low pressure moving across eastern Canada should push its cold
front across southern New England some time Tuesday night into
Wednesday morning. This will mean a chance for showers during
this time.
High pressure briefly returns Thursday with dry weather, but
this time its positioning will lead to lower temperatures.
Another low pressure moving across eastern Canada should send
another cold front our way late next week. Thus, there is a risk
for more showers late next week into next weekend.
&&
.AVIATION /00Z SUNDAY THROUGH THURSDAY/...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
Tonight: High confidence.
Improvement toward SCT-BKN VFR with cold frontal passage, though
some MVFR bases may develop overnight in western airports. Winds
become W/WNW around 10-15 kt with gusts 25 kt (up to 30 kt
across the high terrain).
Sunday through Sunday Night: High confidence.
VFR. NW winds 10-15 kts. Gusts to 30-35 kt possible across the
region during the afternoon/evening hours, dropping off
overnight.
KBOS TAF...Moderate confidence in timing.
Scattered RA possible over the next few hours, ending around 02z.
Cigs improving to borderline VFR levels overnight. Gusty winds
continue through tonight with the cold frontal passage.
KBDL TAF...Moderate confidence in TAF.
Timing for lifting of cigs dependent on frontal passage.
Improvement to MVFR possible around 21z, but may be later.
Isolated TS could be possible this evening.
Outlook /Monday through Thursday/...
Monday: VFR. Breezy.
Monday Night: VFR.
Tuesday: VFR. Breezy.
Tuesday Night: VFR. Breezy. Slight chance SHRA.
Wednesday: VFR. Breezy.
Wednesday Night through Thursday: VFR.
&&
.MARINE...
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Southerly flow continues to strengthen into the SCA range for
the rest of today, with winds 25-30 kt and seas 4-7 ft. Rain and
reduced visibilities expected until a sharp frontal passage this
evening, bringing a windshift to W/NW around 15-25 kt. Sunday
NW winds will gust 20 to 25 kts with seas of 3-6 ft. Small Craft
Advisory conditions expected to continue through Sunday night
across the eastern waters into Nantucket Sound and Cape Cod Bay,
with wind gusts to 25 kt and higher possible. Seas Sunday night
ranging from 4-6 ft.
Outlook /Monday through Thursday/...
Monday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Monday Night: Winds less than 25 kt.
Tuesday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Seas locally approaching 5 ft.
Tuesday Night: Moderate risk for Small Craft Advisory winds
with gusts up to 25 kt. Seas up to 5 ft. Slight chance of rain
showers.
Wednesday: Winds less than 25 kt. Local rough seas.
Wednesday Night: Winds less than 25 kt. Areas of seas
approaching 5 ft.
Thursday: Winds less than 25 kt.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 7 AM EDT Monday for ANZ231-232-250-
254-255.
Small Craft Advisory until 4 AM EDT Monday for ANZ233>237-256.
&&
$$
SYNOPSIS...Belk/Hrencecin
NEAR TERM...Belk/Hrencecin
SHORT TERM...Hrencecin
LONG TERM...Belk
AVIATION...Belk/Hrencecin
MARINE...Belk/Hrencecin/Mensch
Meta data
Point forecast:
https://api.weather.gov/gridpoints/BOX/65,93/forecast
Zone forecast:
https://api.weather.gov/zones/forecast/MAZ014/forecast
Hourly forecast:
https://api.weather.gov/gridpoints/BOX/65,93/forecast/hourly
Hourly detail:
https://api.weather.gov/gridpoints/BOX/65,93
Point detail:
https://api.weather.gov/points/42.4399,-71.2405
Alerts:
https://api.weather.gov/alerts?active=1&point=42.4399,-71.2405
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