Lexington Weather

Current Conditions [‒] Current Conditions [+]

63.5°F Warmer than last hour.

17.5°C

Comfortable

Clear

This Afternoon: Hi 69 °F

Tonight: Lo 41 °F

Dew Point: 46.6°F Increased 0.4°F since last hour .

Humidity: 54%

Air Quality Index: 41

Good

(Fine Particles)

Barometer: 29.74 in S

1007 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.05 in

Rain Wednesday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: 1 mph

Gusts: 8 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
This Afternoon, Tonight, & Friday through Wednesday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Thu Mar 26, 2026 12:48pm EDT

This Afternoon:

Mostly Cloudy

Hi 69 °F

Mostly cloudy, with a high near 69. Southwest wind around 12 mph, with gusts as high as 23 mph.

Tonight:

Rain

Lo 41 °F

Rain before 11pm, then rain and patchy fog. Cloudy. Low around 41, with temperatures rising to around 52 overnight. Southwest wind 7 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

Friday:

Chance Light Rain then Partly Sunny

Hi 48 °F

A chance of rain before 9am. Partly sunny, with a high near 48. Northwest wind around 10 mph. Chance of precipitation is 20%.

Friday Night:

Partly Cloudy

Lo 26 °F

Partly cloudy, with a low around 26. North wind around 7 mph.

Saturday:

Partly Sunny

Hi 37 °F

Partly sunny, with a high near 37. Northwest wind around 8 mph.

Saturday Night:

Partly Cloudy

Lo 25 °F

Partly cloudy, with a low around 25. West wind around 7 mph.

Sunday:

Mostly Sunny

Hi 49 °F

Mostly sunny, with a high near 49. Southwest wind 5 to 12 mph, with gusts as high as 22 mph.

Sunday Night:

Mostly Cloudy

Lo 37 °F

Mostly cloudy, with a low around 37. Southwest wind 7 to 10 mph.

Monday:

Partly Sunny

Hi 59 °F

Partly sunny, with a high near 59. Southwest wind 7 to 10 mph, with gusts as high as 21 mph.

Monday Night:

Mostly Cloudy then Slight Chance Light Rain

Lo 42 °F

A slight chance of rain between 2am and 3am. Mostly cloudy, with a low around 42. West wind 6 to 9 mph.

Tuesday:

Mostly Cloudy then Slight Chance Light Rain

Hi 54 °F

A slight chance of rain after 4pm. Mostly cloudy, with a high near 54. West wind around 8 mph.

Tuesday Night:

Chance Light Rain

Lo 39 °F

A chance of rain. Mostly cloudy, with a low around 39. Southeast wind around 8 mph. Chance of precipitation is 50%.

Wednesday:

Chance Light Rain

Hi 56 °F

A chance of rain. Mostly cloudy, with a high near 56. South wind around 9 mph. Chance of precipitation is 50%.

Wednesday Night:

Light Rain Likely

Lo 44 °F

Rain likely before midnight, then a chance of rain and isolated thunderstorms. Mostly cloudy, with a low around 44. Southwest wind around 9 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 2pm through Sat 1am

Issued by:
National Weather Service Boston / Norton, MA
Updated Thu Mar 26, 2026 12:48pm EDT

2:00pm

Partly Sunny

65°F
Dew Pt 44°F
Wind from SW

SW 12 mph
Precip: 3%

3:00pm

Mostly Cloudy

67°F
Dew Pt 44°F
Wind from SW

SW 12 mph
Precip: 5%

4:00pm

Mostly Cloudy

67°F
Dew Pt 44°F
Wind from SW

SW 10 mph
Precip: 7%

5:00pm

Mostly Cloudy

67°F
Dew Pt 45°F
Wind from SW

SW 10 mph
Precip: 9%

6:00pm

Slight Chance Light Rain

62°F
Dew Pt 45°F
Wind from SW

SW 10 mph
Precip: 24%

7:00pm

Chance Light Rain

61°F
Dew Pt 46°F
Wind from S

S 9 mph
Precip: 40%

8:00pm

Chance Light Rain

59°F
Dew Pt 46°F
Wind from S

S 9 mph
Precip: 55%
Rain: 0.02 in

9:00pm

Rain

56°F
Dew Pt 46°F
Wind from S

S 9 mph
Precip: 61%
Rain: 0.04 in

10:00pm

Rain

54°F
Dew Pt 48°F
Wind from SW

SW 9 mph
Precip: 66%
Rain: 0.04 in

11:00pm

Rain

53°F
Dew Pt 49°F
Wind from SW

SW 8 mph
Precip: 72%
Rain: 0.04 in

Fri
12:00am

Rain Likely

53°F
Dew Pt 49°F
Wind from SW

SW 8 mph
Precip: 63%
Rain: 0.04 in

Fri
1:00am

Light Rain Likely

54°F
Dew Pt 49°F
Wind from W

W 8 mph
Precip: 54%
Rain: 0.03 in

Fri
2:00am

Light Rain Likely

53°F
Dew Pt 50°F
Wind from W

W 7 mph
Precip: 45%

Fri
3:00am

Chance Light Rain

52°F
Dew Pt 49°F
Wind from NW

NW 7 mph
Precip: 40%

Fri
4:00am

Slight Chance Light Rain

51°F
Dew Pt 48°F
Wind from NW

NW 7 mph
Precip: 34%

Fri
5:00am

Chance Light Rain

52°F
Dew Pt 46°F
Wind from NW

NW 7 mph
Precip: 29%

Fri
6:00am

Chance Light Rain

48°F
Dew Pt 44°F
Wind Chill: 44°F
Wind from NW

NW 8 mph
Precip: 24%

Fri
7:00am

Chance Light Rain

45°F
Dew Pt 41°F
Wind Chill: 40°F
Wind from NW

NW 10 mph
Precip: 20%

Fri
8:00am

Slight Chance Light Rain

44°F
Dew Pt 37°F
Wind Chill: 38°F
Wind from N

N 10 mph
Precip: 15%

Fri
9:00am

Mostly Cloudy

42°F
Dew Pt 35°F
Wind Chill: 36°F
Wind from N

N 10 mph
Precip: 12%

Fri
10:00am

Partly Sunny

44°F
Dew Pt 31°F
Wind Chill: 38°F
Wind from N

N 10 mph
Precip: 10%

Fri
11:00am

Partly Sunny

46°F
Dew Pt 29°F
Wind Chill: 41°F
Wind from N

N 10 mph
Precip: 7%

Fri
12:00pm

Partly Sunny

44°F
Dew Pt 27°F
Wind Chill: 39°F
Wind from N

N 10 mph
Precip: 5%

Fri
1:00pm

Partly Sunny

45°F
Dew Pt 24°F
Wind Chill: 39°F
Wind from N

N 10 mph
Precip: 4%

Fri
2:00pm

Mostly Sunny

45°F
Dew Pt 21°F
Wind Chill: 40°F
Wind from N

N 10 mph
Precip: 2%

Fri
3:00pm

Mostly Sunny

45°F
Dew Pt 20°F
Wind Chill: 40°F
Wind from N

N 9 mph
Precip: 2%

Fri
4:00pm

Mostly Sunny

44°F
Dew Pt 18°F
Wind Chill: 39°F
Wind from N

N 9 mph
Precip: 2%

Fri
5:00pm

Mostly Sunny

44°F
Dew Pt 16°F
Wind Chill: 39°F
Wind from N

N 8 mph
Precip: 2%

Fri
6:00pm

Mostly Clear

42°F
Dew Pt 17°F
Wind Chill: 38°F
Wind from N

N 7 mph
Precip: 2%

Fri
7:00pm

Mostly Clear

40°F
Dew Pt 17°F
Wind Chill: 36°F
Wind from N

N 6 mph
Precip: 1%

Fri
8:00pm

Mostly Clear

38°F
Dew Pt 18°F
Wind Chill: 34°F
Wind from N

N 6 mph
Precip: 1%

Fri
9:00pm

Mostly Clear

36°F
Dew Pt 19°F
Wind Chill: 31°F
Wind from N

N 6 mph
Precip: 1%

Fri
10:00pm

Mostly Clear

34°F
Dew Pt 18°F
Wind Chill: 30°F
Wind from N

N 6 mph
Precip: 2%

Fri
11:00pm

Mostly Clear

33°F
Dew Pt 16°F
Wind Chill: 28°F
Wind from N

N 6 mph
Precip: 2%

Sat
12:00am

Mostly Clear

32°F
Dew Pt 15°F
Wind Chill: 27°F
Wind from N

N 6 mph
Precip: 2%

Sat
1:00am

Partly Cloudy

31°F
Dew Pt 14°F
Wind Chill: 26°F
Wind from N

N 6 mph
Precip: 2%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 261125
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
725 AM EDT Thu Mar 26 2026

.WHAT HAS CHANGED...
No major changes since Wednesday morning update.

&&

.KEY MESSAGES...

- Mild conditions today will be followed by a soaking rain 
  tonight into Friday. Cooler, but still near normal Friday.

- Cold and windy start to the weekend with a warm up expected
  Sunday and the start of the work week. Watching the chance for 
  unsettled weather through at least mid week.

&&

.DISCUSSION...
KEY MESSAGE 1...Mild conditions today will be followed by a
soaking rain tonight into Friday. Cooler, but still near 
normal Friday.

A band of rainfall moving across southern New England this 
morning was not resulting in much accumulation at the ground,
despite some higher reflectivity. Expecting this band to be 
well over the ocean by around daybreak, leaving dry conditions 
for this morning. Increasing southwest winds will push warmer 
air into our region. Any sunshine we get this morning should be 
effective in boosting temperatures above normal, with many 
locations in the 60s away from the immediate south coast. Still 
stuck int he 50s there due to the onshore flow. Depending on how
much sunshine we get this morning, a few spots in the CT River 
valley could even push 70 degrees for a high temperature.

More clouds and rain arrive along and ahead of a cold front late
today across western MA, but especially tonight for most of
southern New England. Still thinking a forecast of 0.25-0.50
inch of rainfall is most likely when all is done later Friday
morning. Drier and colder weather overspreads our region Friday
as well. This cold advection appears to be strong enough to hold
temperatures nearly steady during the day. While colder than
today, high temperatures should still be near normal for late
March.

KEY MESSAGE 2...Cold and windy start to the weekend with a warm
up expected Sunday and the start of the work week. Watching the 
chance for unsettled weather through at least mid week.

By Saturday the of the trough moves over New England with 500 mb 
heights falling to 520dm. We won't see too much in the way of
improving temperatures as 850mb temps remain well below -10C, or 
about 15-20 below average! Thus, expect highs to struggle into
the upper 30s to lower 40s on Saturday and Sunday with NW flow
and continued cold advection aloft. Gusty NW winds will make it 
feel closer to the teens and 20s across the region, especially 
on Saturday. Expect warmer conditions to arrive Monday as high 
pressure shifts offshore and establishes a southwesterly return 
flow. Highs likely climb into the lower to mid 50s Monday 
afternoon. 

Focus then shifts to another frontal boundary that arrives later  
Monday into Tuesday. Guidance initially shows a cold front that 
moves SE before slowing and transitioning to more of a
stationary front somewhere over New England. This boundary could 
act as a focus for numerous waves of unsettled weather starting 
later Monday and for perhaps the first half of the week.
Ensembles have ample PWATs (150-200 percent of normal) so, no
issues with available moisture. Uncertainty will be driven
primarily by the location of the frontal boundary and the
eventual track/intensity of shortwaves originating from the
Pacific Northwest and racing east on an increasingly zonal 
upper flow.

&&

.AVIATION /12Z THURSDAY THROUGH MONDAY/...
Low - less than 30 percent. 
Moderate - 30 to 60 percent. 
High - greater than 60 percent.

Today...High confidence.

VFR conditions dominate outside perhaps some brief marginal 
MVFR cigs under -RA during the early-mid morning hours. SW wind 
gusts of 20-30 kt develop. Generally dry weather, but a few spot
showers possible mainly early in the morning and perhaps later 
in the day near the NH border. Strong LLWS possible over the 
south coast with 40-50 kt of shear to 2000 feet.

Tonight...Moderate confidence.

Conditions deteriorate to MVFR/IFR, possibly even LIFR, tonight
with -RA overspreading the region from west to east between 00 
and 06z. Southwest winds becoming northwest between 06 and 12Z 
Friday.

Friday...High confidence.

Becoming VFR from NW to SE during the morning. Gusty N winds 
behind a cold frontal passage.

KBOS Terminal...High confidence in trends. Moderate confidence
in timing.

KBDL Terminal...High confidence in trends. Moderate confidence
in timing..

Outlook /Friday Night through Monday/...

Friday Night through Saturday: VFR. Breezy. 

Saturday Night: VFR. 

Sunday: VFR. Breezy. 

Sunday Night: Breezy. 

Monday: Windy with areas of gusts up to 35 kt. 

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Friday...High confidence.

Winds increasing out of the south/southwest this morning.
Moderate sustained winds between 15-25 kt with gusts up to
30 kt. Winds shift to the northwest tonight as a cold front 
moves over the coastal waters with a round of showers. North to
northeast winds expected for Friday. Small Craft Advisory
criteria through the end of this week with a few gale force 
gusts possible on the edge of the outer marine zones.

Outlook /Friday Night through Monday/...

Friday Night: Winds less than 25 kt. Seas up to 5 ft. 

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

Saturday Night: Winds less than 25 kt. 

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

Sunday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Seas up to 5 ft. 

Monday: Strong winds with gusts up to 35 kt. Seas up to 5 ft. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until midnight EDT tonight for ANZ230-236.
     Small Craft Advisory until 8 AM EDT Friday for ANZ231>234-251.
     Small Craft Advisory until 5 PM EDT Friday for ANZ235-237.
     Small Craft Advisory until 2 PM EDT Friday for ANZ250.
     Small Craft Advisory until 8 PM EDT Friday for ANZ254>256.

&&

$$

DISCUSSION...Belk/FT
AVIATION...McMinn
MARINE...Belk/FT

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