Lexington Weather

Lexington, Massachusetts, USA

39°F

1/28/2023 9:05pm

Lexington Conditions: Clear
Temperature: 38.8°F / 3.8°C
Dew Point: 27.3°F
Relative Humidity: 63%
Wind: Calm, 10-min avg: Calm, gust: None
Barometer: 30.24 in Rising Slowly
Visibility: 10 miles
Rain Today: 0.00 in

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Current Conditions [‒] Current Conditions [+]

38.8°F Colder than last hour.

3.8°C

Chilly

Clear

Tonight: Lo 30 °F

Sunday: Hi 51 °F

Dew Point: 27.3°F Increased 0.7°F since last hour .

Humidity: 63% Increased 4.0% since last hour.

Barometer: 30.24 in Rising 0.02 inHg/hr

1024 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

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

Tap Click image to go to NWS winter weather page

For Lexington, range of possible snowfall from 0.0 to 0.1". 0.0" expected.

Forecast [‒] Forecast [+]

Daily Forecast
Hourly Forecast

NWS Weather Forecast -
Tonight, Sunday, & Sunday Night through Saturday

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sat Jan 28, 2023 3:06pm EST

Overview:

Above normal temperatures continue into Sunday, along with mainly dry conditions, until Sunday evening when scattered showers impact the region. The weather turns colder next week, but the magnitude of the cold and timing remains uncertain. We also will have to watch for some wintry precipitation in the mid-to-late week timeframe, depending upon a few waves of low pressure passing close to our region.

Tonight:

Mostly Cloudy

Lo 30 °F

Mostly cloudy, with a low around 30. Southwest wind 2 to 6 mph.

Sunday:

Mostly Cloudy

Hi 51 °F

Mostly cloudy, with a high near 51. Southeast wind 3 to 15 mph, with gusts as high as 25 mph.

Sunday Night:

Slight Chance Rain Showers then Mostly Cloudy

Lo 36 °F

A slight chance of rain showers between 7pm and 8pm. Mostly cloudy, with a low around 36. Southwest wind 8 to 15 mph. Chance of precipitation is 20%.

Monday:

Partly Sunny

Hi 46 °F

Partly sunny, with a high near 46. West wind around 7 mph.

Monday Night:

Slight Chance Light Rain then Slight Chance Rain And Snow

Lo 29 °F

A slight chance of rain between 7pm and 1am, then a slight chance of rain and snow between 1am and 2am. Mostly cloudy, with a low around 29. West wind 7 to 10 mph. Chance of precipitation is 30%.

Tuesday:

Partly Sunny

Hi 32 °F

Partly sunny, with a high near 32. Northwest wind 10 to 14 mph.

Tuesday Night:

Partly Cloudy then Slight Chance Light Snow

Lo 17 °F

A slight chance of snow after 4am. Partly cloudy, with a low around 17. Northwest wind 7 to 10 mph.

Wednesday:

Slight Chance Light Snow then Mostly Sunny

Hi 29 °F

A slight chance of snow before 11am. Mostly sunny, with a high near 29. West wind 7 to 14 mph.

Wednesday Night:

Partly Cloudy

Lo 20 °F

Partly cloudy, with a low around 20. West wind 8 to 12 mph.

Thursday:

Mostly Cloudy

Hi 34 °F

Mostly cloudy, with a high near 34. West wind 8 to 13 mph.

Thursday Night:

Mostly Cloudy

Lo 20 °F

Mostly cloudy, with a low around 20. West wind around 12 mph.

Friday:

Mostly Sunny

Hi 28 °F

Mostly sunny, with a high near 28. Northwest wind 10 to 16 mph.

Friday Night:

Mostly Clear

Lo 7 °F

Mostly clear, with a low around 7. Northwest wind around 15 mph.

Saturday:

Sunny

Hi 24 °F

Sunny, with a high near 24. Northwest wind around 14 mph.

FULL FORECAST

NWS Hourly Forecast -
Tonight 9pm through Sun 8pm

Issued by:
National Weather Service Boston / Norton, MA
Updated Sat Jan 28, 2023 3:06pm EST

9:00pm

Mostly Cloudy

36°F
Dew Pt 30°F
Wind Chill: 31°F
Wind from W

W 6 mph
Precip: 0%

10:00pm

Mostly Cloudy

35°F
Dew Pt 29°F
Wind Chill: 31°F
Wind from W

W 5 mph
Precip: 0%

11:00pm

Mostly Cloudy

34°F
Dew Pt 29°F
Wind Chill: 31°F
Wind from W

W 3 mph
Precip: 0%

Sun
12:00am

Mostly Cloudy

34°F
Dew Pt 29°F
Wind Chill: 31°F
Wind from W

W 3 mph
Precip: 1%

Sun
1:00am

Mostly Cloudy

33°F
Dew Pt 28°F
Wind from W

W 2 mph
Precip: 1%

Sun
2:00am

Mostly Cloudy

33°F
Dew Pt 28°F
Wind from SW

SW 2 mph
Precip: 1%

Sun
3:00am

Mostly Cloudy

33°F
Dew Pt 28°F
Wind from S

S 2 mph
Precip: 1%

Sun
4:00am

Mostly Cloudy

32°F
Dew Pt 28°F
Wind from S

S 2 mph
Precip: 1%

Sun
5:00am

Mostly Cloudy

31°F
Dew Pt 28°F
Wind from S

S 2 mph
Precip: 1%

Sun
6:00am

Mostly Cloudy

31°F
Dew Pt 28°F
Wind Chill: 28°F
Wind from SE

SE 3 mph
Precip: 1%

Sun
7:00am

Mostly Cloudy

31°F
Dew Pt 29°F
Wind Chill: 28°F
Wind from E

E 3 mph
Precip: 2%

Sun
8:00am

Mostly Cloudy

33°F
Dew Pt 30°F
Wind Chill: 29°F
Wind from SE

SE 5 mph
Precip: 2%

Sun
9:00am

Cloudy

35°F
Dew Pt 32°F
Wind Chill: 30°F
Wind from SE

SE 6 mph
Precip: 2%

Sun
10:00am

Cloudy

39°F
Dew Pt 34°F
Wind Chill: 34°F
Wind from S

S 7 mph
Precip: 3%

Sun
11:00am

Cloudy

43°F
Dew Pt 36°F
Wind Chill: 38°F
Wind from S

S 9 mph
Precip: 4%

Sun
12:00pm

Cloudy

47°F
Dew Pt 38°F
Wind Chill: 42°F
Wind from S

S 12 mph
Precip: 6%

Sun
1:00pm

Cloudy

50°F
Dew Pt 39°F
Wind Chill: 45°F
Wind from S

S 14 mph
Precip: 7%

Sun
2:00pm

Cloudy

51°F
Dew Pt 40°F
Wind from S

S 14 mph
Precip: 6%

Sun
3:00pm

Mostly Cloudy

51°F
Dew Pt 39°F
Wind from S

S 14 mph
Precip: 5%

Sun
4:00pm

Mostly Cloudy

50°F
Dew Pt 38°F
Wind Chill: 45°F
Wind from S

S 14 mph
Precip: 3%

Sun
5:00pm

Mostly Cloudy

49°F
Dew Pt 38°F
Wind Chill: 43°F
Wind from S

S 15 mph
Precip: 7%

Sun
6:00pm

Mostly Cloudy

48°F
Dew Pt 37°F
Wind Chill: 42°F
Wind from SW

SW 15 mph
Precip: 11%

Sun
7:00pm

Slight Chance Rain Showers

48°F
Dew Pt 37°F
Wind Chill: 42°F
Wind from SW

SW 15 mph
Precip: 15%

Sun
8:00pm

Mostly Cloudy

47°F
Dew Pt 37°F
Wind Chill: 41°F
Wind from SW

SW 14 mph
Precip: 14%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 282321
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
621 PM EST Sat Jan 28 2023

.SYNOPSIS...
Above normal temperatures continue into Sunday, along with mainly 
dry conditions, until Sunday evening when scattered showers impact 
the region. The weather turns colder next week, but the magnitude of 
the cold and timing remains uncertain. We also will have to watch 
for some wintry precipitation in the mid-to-late week timeframe, 
depending upon a few waves of low pressure passing close to our 
region.

&&

.NEAR TERM /UNTIL 6 AM SUNDAY MORNING/...

630 PM update...

Quiet weather continues this evening with minimal changes to the
forecast necessary. 

Previous Discussion...

* Above normal temps again tonight

Tonight...

Tranquil January weather this evening and overnight, as weak ridging 
advects across the area. The combination of weak high pressure, 
partly cloudy conditions and a dry airmass (dew pts in the 20s away 
from the south coast) will allow temps to cool off rapidly with 
sunset, especially with diminishing winds.  Some uncertainty how low 
temps will get tonight, pending how much cloud cover moves across 
the area. Given this uncertainty, blended in some of the colder MOS 
guidance to derive overnight lows, which yields 20s mainly northwest 
of I-95, and low to mid 30s elsewhere. Still above normal for late 
January.

&&

.SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/...
345 PM update...

Sunday...

* Late March-like temps again

Low pressure moving thru western NY into northern New England will 
drive another warm sector into SNE Sunday.  Even warmer 925 mb 
temps, +4C Sunday vs +1C Saturday. Thus, potentially warmer Sunday 
but also possibly more clouds than today. Although, this time of 
year with low sun angle, temps more driven from thermal advection 
than solar insolation. Therefore, we blended in some of the warmer 
NBM 75 percentile temps.  This yields temps slightly milder than 
today, with highs 50-55, upper 40s along the immediate south coast 
and high terrain. Again, well above normal, about 15-20 degs! More 
typical highs for late March. Although, it will feel cooler given a 
brisk SSW wind 15-25 mph. Dry weather much of the day, but risk for 
scattered showers late as weak short wave and associated cold front 
approach the area. 

Sunday night...

Weak cold front and associated low level SSW jet, providing modest 
thermal and moisture advection, including low level convergence, 
likely sufficient for scattered evening showers. Although, given 
deep layer moisture is limited along with weak synoptic forcing, 
some areas may remain dry. Thus, not a washout. Breezy and mild in 
the evening in response to low level WAA, then weak post frontal CAA 
brings temps down into the 30s regionwide overnight. Once again, 
above normal for late Jan.

&&

.LONG TERM /MONDAY THROUGH SATURDAY/...
345 PM update...

Highlights...

* Mostly dry this week with periodic shots of light precipitation

* Potential for much colder air toward the end of the week, but 
  details are uncertain. 

Details...

Overall a quiet, generally zonal weather pattern for the coming work 
week. Southern New England will be positioned between an upper level 
ridge of high pressure over the Caribbean and a trough over eastern 
Canada. Given the setup we'll stay dry save for a few disturbances 
mixed in. The first comes Monday night into Tuesday when a shortwave 
and surface cold front swings through kicking off some light, high 
elevation snow and low elevation rain. Behind that cold front a 
cooler airmass moves in and temperatures previously well above 
normal (in the 40s and low 50s Monday) will crash back to Earth. 850 
mb temps around 0C for the weekend into Monday will drop to anywhere 
from -8 to -15C Tuesday through at least Thursday. This brings us 
afternoon highs in the 30s. A true surge of colder arctic air is 
possible around Friday into the weekend as deeper trough digs into 
the eastern seaboard. Timing and magnitude remain uncertain, but the 
global guidance indicates those 850 mb temps dropping up to another 
15 degrees, as cold as -25 or -30C. We're not expecting a prolonged 
arctic intrusion, but a brief shot at much colder air is possible at 
the end of the week. A low passing to our south on Thursday may 
bring wet weather but ensemble probabilities of this coming close 
enough to impact southern New England are low.

&&

.AVIATION /23Z SATURDAY THROUGH THURSDAY/...
Forecaster Confidence Levels:

Low - less than 30 percent. 
Medium - 30 to 60 percent. 
High - greater than 60 percent.

00z update...

Tonight...High confidence.

SKC, then VFR cloud bases entering northwest MA late. WSW winds
10-15 kt at 00z, then becoming light south late. 

Sunday...High confidence.

VFR cloud bases, but MVFR cigs late northwest MA. Chance of
scattered rain showers toward 00z. Light south winds in the
morning become SSW winds in the afternoon, 15-25 kt. 

Sunday night...high confidence.

VFR cloud bases, with MVFR cigs across northwest MA. Chance of
scattered showers 00z-06z, then drying out and trending toward
VFR 12z. SSW winds 15-25 kt at 00z, shift to west after 05z and
diminish to 5-10 kt. 

KBOS Terminal...High confidence. Gusty WSW winds diminish
20z/21z, then become light WSW. 

KBDL Terminal...High confidence.

Outlook /Monday through Thursday/... 

Monday & Monday night: Breezy. Slight chance RA.

Tuesday: Breezy. 

Tuesday Night: Slight chance SN.

Wednesday: Breezy. Slight chance SN.

Wednesday Night through Thursday: Breezy.

&&

.MARINE...
Forecaster Confidence Levels:

Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.

345 PM update...

Through Sunday night...

Tonight...high confidence.

Gusty SW winds 15-25 kt near shore this evening, diminish and become 
light south overnight. Dry weather and good vsby.

Sunday...high confidence.

Light south winds in the morning, becoming SSW 15-25 kt in the 
afternoon. Dry weather and good vsby, although low risk of scattered 
showers late in the day. 

Sunday night...high confidence. 

SSW winds in the evening of 15-25 kt, becoming west 10-15 kt 
overnight. Scattered evening showers, trending dry overnight. 

Outlook /Monday through Thursday/... 

Monday: Winds less than 25 kt. Areas of seas approaching 5 ft. 

Monday Night: Winds less than 25 kt. Areas of seas approaching
5 ft. Slight chance of rain. 

Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.

Tuesday Night: Winds less than 25 kt. Areas of seas approaching
5 ft. Slight chance of snow. 

Wednesday: Winds less than 25 kt. Seas locally approaching
5 ft. Slight chance of snow. 

Wednesday Night: Winds less than 25 kt. Seas locally
approaching 5 ft. 

Thursday: Winds less than 25 kt. Seas locally approaching 5 ft.
Slight chance of rain.

&&

.HYDROLOGY...
345 PM update...

Flood warnings continue for the Pawcatuck River in RI, impacting
Westerly RI, and the Taunton River, impacting Bridgewater in 
southeast MA. Both rivers are in minor flood but continue to 
recede and will fall below flood stage this evening (Taunton 
River) and Sunday afternoon (Pawcatuck).

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 10 PM EST this evening for ANZ250-
     254>256.

&&

$$
SYNOPSIS...Nocera/BW
NEAR TERM...Nocera/BW
SHORT TERM...Nocera
LONG TERM...BW
AVIATION...Nocera/BW
MARINE...Nocera/BW
HYDROLOGY...