Lexington Weather

Current Conditions [‒] Current Conditions [+]

68.2°F Warmer than last hour.

20.1°C

Comfortable

Mostly cloudy

Today: Hi 73 °F

Tonight: Lo 50 °F

Dew Point: 52.3°F Decreased 1.7°F since last hour.

Humidity: 57% Decreased 8.0% since last hour.

Air Quality Index: 26

Good

(Ozone)

Barometer: 29.74 in S

1007 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.07 in

Rain Wednesday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 1 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
Today, Tonight, & Friday through Wednesday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Thu May 28, 2026 7:43am EDT

Overview:

- Cooler today with scattered showers developing in the afternoon, especially across eastern with a low risk of an isolated t-storm.

- Unsettled conditions Friday through early next week with periods of showers. Gusty northerly winds possible Saturday.

Today:

Scattered Rain Showers

Hi 73 °F

Scattered rain showers between 11am and 2pm, then scattered showers and thunderstorms. Partly sunny, with a high near 73. North wind 6 to 13 mph. Chance of precipitation is 40%.

Tonight:

Isolated Rain Showers then Partly Cloudy

Lo 50 °F

Isolated rain showers before 9pm. Partly cloudy, with a low around 50. North wind around 7 mph. Chance of precipitation is 20%.

Friday:

Partly Sunny then Chance Rain Showers

Hi 70 °F

A chance of rain showers after 4pm. Partly sunny, with a high near 70. West wind 7 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Friday Night:

Rain Showers

Lo 46 °F

Rain showers before 4am, then patchy fog and showers and thunderstorms. Cloudy, with a low around 46. West wind 5 to 12 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Saturday:

Rain Showers

Hi 56 °F

Rain showers and patchy fog before 2pm. Mostly cloudy, with a high near 56. North wind 12 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

Saturday Night:

Mostly Clear

Lo 45 °F

Mostly clear, with a low around 45. Northwest wind 2 to 9 mph.

Sunday:

Mostly Sunny

Hi 70 °F

Mostly sunny, with a high near 70. Northwest wind 3 to 8 mph.

Sunday Night:

Chance Rain Showers

Lo 52 °F

A chance of rain showers after 9pm. Mostly cloudy, with a low around 52. Southwest wind around 7 mph. Chance of precipitation is 30%.

Monday:

Chance Showers And T-Storms

Hi 68 °F

Monday: Chance Showers And Thunderstorms

A chance of rain showers before 8am, then a chance of showers and thunderstorms. Partly sunny, with a high near 68. Northwest wind 5 to 8 mph. Chance of precipitation is 50%.

Monday Night:

Chance Showers And T-Storms

Lo 49 °F

Monday Night: Chance Showers And Thunderstorms

A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. Northeast wind 2 to 6 mph. Chance of precipitation is 50%.

Tuesday:

Chance Rain Showers

Hi 67 °F

A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 67. Northeast wind 3 to 9 mph. Chance of precipitation is 50%.

Tuesday Night:

Chance Showers And T-Storms

Lo 51 °F

Tuesday Night: Chance Showers And Thunderstorms

A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Northeast wind around 7 mph. Chance of precipitation is 40%.

Wednesday:

Slight Chance Rain Showers

Hi 69 °F

A slight chance of rain showers. Mostly sunny, with a high near 69. North wind 5 to 8 mph.

Wednesday Night:

Slight Chance Rain Showers

Lo 53 °F

A slight chance of rain showers before 2am. Partly cloudy, with a low around 53. West wind 3 to 7 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 11am through Fri 10pm

Issued by:
National Weather Service Boston / Norton, MA
Updated Thu May 28, 2026 7:43am EDT

11:00am

Isolated Rain Showers

71°F
Dew Pt 48°F
Wind from N

N 13 mph
Precip: 22%

12:00pm

Scattered Rain Showers

71°F
Dew Pt 47°F
Wind from NW

NW 12 mph
Precip: 29%

1:00pm

Scattered Rain Showers

71°F
Dew Pt 47°F
Wind from N

N 12 mph
Precip: 35%

2:00pm

Scattered Showers And Thunderstorms

71°F
Dew Pt 47°F
Wind from N

N 12 mph
Precip: 42%

3:00pm

Scattered Showers And Thunderstorms

70°F
Dew Pt 47°F
Wind from N

N 12 mph
Precip: 36%

4:00pm

Scattered Showers And Thunderstorms

69°F
Dew Pt 47°F
Wind from N

N 9 mph
Precip: 31%

5:00pm

Scattered Rain Showers

68°F
Dew Pt 47°F
Wind from E

E 6 mph
Precip: 25%

6:00pm

Isolated Rain Showers

66°F
Dew Pt 48°F
Wind from E

E 6 mph
Precip: 22%

7:00pm

Isolated Rain Showers

64°F
Dew Pt 48°F
Wind from N

N 6 mph
Precip: 18%

8:00pm

Isolated Rain Showers

62°F
Dew Pt 47°F
Wind from N

N 6 mph
Precip: 15%

9:00pm

Partly Cloudy

60°F
Dew Pt 47°F
Wind from N

N 6 mph
Precip: 12%

10:00pm

Mostly Clear

59°F
Dew Pt 47°F
Wind from N

N 6 mph
Precip: 9%

11:00pm

Mostly Clear

57°F
Dew Pt 48°F
Wind from NW

NW 7 mph
Precip: 6%

Fri
12:00am

Mostly Clear

56°F
Dew Pt 47°F
Wind from NW

NW 7 mph
Precip: 4%

Fri
1:00am

Mostly Clear

54°F
Dew Pt 46°F
Wind from NW

NW 7 mph
Precip: 3%

Fri
2:00am

Partly Cloudy

52°F
Dew Pt 46°F
Wind from NW

NW 6 mph
Precip: 1%

Fri
3:00am

Mostly Cloudy

51°F
Dew Pt 45°F
Wind from NW

NW 6 mph
Precip: 1%

Fri
4:00am

Mostly Cloudy

51°F
Dew Pt 45°F
Wind from NW

NW 5 mph
Precip: 1%

Fri
5:00am

Mostly Cloudy

51°F
Dew Pt 45°F
Wind from NW

NW 5 mph
Precip: 2%

Fri
6:00am

Partly Sunny

52°F
Dew Pt 45°F
Wind from NW

NW 7 mph
Precip: 3%

Fri
7:00am

Partly Sunny

54°F
Dew Pt 46°F
Wind from NW

NW 7 mph
Precip: 4%

Fri
8:00am

Partly Sunny

57°F
Dew Pt 46°F
Wind from NW

NW 8 mph
Precip: 4%

Fri
9:00am

Mostly Sunny

60°F
Dew Pt 45°F
Wind from NW

NW 9 mph
Precip: 3%

Fri
10:00am

Mostly Sunny

64°F
Dew Pt 43°F
Wind from NW

NW 10 mph
Precip: 1%

Fri
11:00am

Mostly Sunny

65°F
Dew Pt 42°F
Wind from NW

NW 12 mph
Precip: 1%

Fri
12:00pm

Partly Sunny

67°F
Dew Pt 42°F
Wind from NW

NW 10 mph
Precip: 1%

Fri
1:00pm

Partly Sunny

68°F
Dew Pt 41°F
Wind from NW

NW 9 mph
Precip: 0%

Fri
2:00pm

Mostly Cloudy

69°F
Dew Pt 41°F
Wind from NW

NW 8 mph
Precip: 6%

Fri
3:00pm

Mostly Cloudy

69°F
Dew Pt 42°F
Wind from W

W 8 mph
Precip: 12%

Fri
4:00pm

Slight Chance Rain Showers

69°F
Dew Pt 43°F
Wind from W

W 8 mph
Precip: 19%
Rain: 0.01 in

Fri
5:00pm

Chance Rain Showers

69°F
Dew Pt 43°F
Wind from SW

SW 9 mph
Precip: 25%
Rain: 0.01 in

Fri
6:00pm

Chance Rain Showers

66°F
Dew Pt 45°F
Wind from SW

SW 7 mph
Precip: 36%
Rain: 0.02 in

Fri
7:00pm

Chance Rain Showers

65°F
Dew Pt 46°F
Wind from SW

SW 6 mph
Precip: 46%
Rain: 0.02 in

Fri
8:00pm

Rain Showers Likely

63°F
Dew Pt 48°F
Wind from SW

SW 5 mph
Precip: 57%
Rain: 0.02 in

Fri
9:00pm

Rain Showers Likely

59°F
Dew Pt 49°F
Wind from SW

SW 6 mph
Precip: 70%
Rain: 0.03 in

Fri
10:00pm

Rain Showers

57°F
Dew Pt 49°F
Wind from SW

SW 7 mph
Precip: 82%
Rain: 0.03 in

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 281052
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
652 AM EDT Thu May 28 2026

.WHAT HAS CHANGED...

A Gale Watch has been issued for all of the coastal and outer
waters for Saturday. Gusty northerly winds are possible with the
passage of a strong low pressure system.

&&

.KEY MESSAGES...

- Cooler today with scattered showers developing in the afternoon, 
  especially across eastern with a low risk of an isolated t-storm. 

- Unsettled conditions Friday through early next week with
  periods of showers. Gusty northerly winds possible Saturday.

&&

.DISCUSSION...

KEY MESSAGE 1...Cooler today with scattered showers developing in 
the afternoon, especially across eastern MA with a low risk of
an isolated t-storm.

Cooler temperatures are expected today within the post-frontal 
airmass. 925mb temperatures range 11-13C, supporting highs in the 
low to mid 70s for most while onshore flow will hold highs in the 
upper 60s along the east MA coast. A shortwave trough drops 
southward across the region accompanied by a slight uptick in 
moisture. Weak ascent with the wave should be sufficient enough to 
trigger light scattered showers after late morning through the 
evening. Surface flow fields show indications of a coastal front off 
the eastern MA coast extending southward  with E/NE flow offshore 
and N/NNW winds not far inland. This should act to enhance moisture 
convergence along the coastal and near-coastal areas thus favoring 
those areas for the greater risk for scattered showers. Enough
instability may be present for the low risk for an isolated
t-storm or two...But not expecting any severe weather. 


KEY MESSAGE 2...Unsettled conditions Friday through early next week 
with periods of showers. Gusty northerly winds possible Saturday.

There is a good consensus among ensemble guidance for a blocky upper 
level pattern to set up over the northeast featuring upper troughing 
Friday through early next week. Several shortwaves moves through the 
broad cyclonic flow aloft bringing periodic chances for 
showers/rain.

The first wave features a closed upper low that drops south across 
southern New England late Friday into Saturday. There is still some 
spread amongst guidance on the exact timing of the wave and 
arrival of showers. Some guidance (GFS/AIGFS) indicates showers 
arriving as early as late Friday afternoon, while others lean 
later (Fri night). Showers continue through Saturday, with 
showers gradually diminishing in the afternoon/evening. With 
limited moisture, rain amounts aren't expected to be heavy with 
ensembles generally showing a more likely range of 0.20" to 
0.80" with the higher amounts favored in northeast MA. 
Temperatures trend below normal Saturday in the upper 50s to low
60s. The pressure gradient tightens as a surface low tracks 
across the region which will promote a period of gusty N-NE 
winds Saturday. The expected gusts will depend on the track of 
the low, but if the low tracks nearby gusts 30-40 mph are 
possible, isolated 45 mph can't be ruled out. The ECMWF ensemble
leans toward widespread gusty winds with moderate to high probs
for gusts greater than 40 mph. However, the GEFS shows weaker 
winds overall and confines low-moderate probabilities for 40 
mph+ to the Cape and waters. Something we will keep monitoring. 

Sunday trends drier and more seasonable with a 
mix of sun and clouds. 

A few more waves move through the flow beyond Sunday into early next 
week. There is still spread in the details of the waves such as the 
timing, but they may support periodic chances for showers. There is 
a better consensus for a round of showers sometime Monday and 
another Tuesday. 850mb temperatures anomalies lean below normal 
early next week likely yielding temperatures in the 60s and low 70s 
through Wednesday. There are signs of the blocky pattern breaking 
down later next week which should help warm temperatures back
up.

&&

.AVIATION /12Z THURSDAY THROUGH MONDAY/...

Forecaster Confidence Levels...

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

12z TAF Update...

Today...High Confidence. 

VFR outside brief scattered showers developing this afternoon
especially across eastern MA. Low risk for an isolated t-storm
or two...But certainly northing widespread. Winds will become N-NW
winds at 10-15 kts with gusts of 20+ kts for the interior 
terminals and E-NE 7-13 kts near the eastern MA coast. 

Tonight...High confidence. 

VFR. Light N-NW wind. 

KBOS...High confidence in TAF. The main risk for brief scattered
showers in the vicinity of terminal will be after 18z through 
about 00z/01z. There is a low risk for a brief rumble of 
thunder as well.

KBDL...High confidence in TAF. 

Outlook /Friday through Monday/...

Friday: VFR. Breezy. Chance SHRA.

Friday Night: Mainly VFR, with local MVFR possible. Windy with
local gusts up to 35 kt. Chance SHRA, patchy BR.

Saturday: Mainly VFR, with local MVFR possible. Windy with
gusts up to 35 kt. Chance SHRA.

Saturday Night: VFR. Windy with local gusts up to 30 kt. 

Sunday: VFR. 

Sunday Night: VFR. Slight chance SHRA.

Monday: VFR. Chance SHRA, slight chance TSRA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Today and Tonight...

Winds and seas below SCA thresholds. N winds tonight. N-NE winds
5-15 kts today becoming N-NW tonight. Scattered showers 
developing Thu afternoon. Low chance of an isolated storm. 

We issued a Gale Watch for all the waters for Saturday due to
the potential for a stronger low pressure to track across the
region bringing gusty N-NE winds. Confidence is moderate as the
Gales will depend on the track of the low. 

Outlook /Friday through Monday/...

Friday: Winds less than 25 kt. Chance of rain showers. 

Friday Night: Low risk for Small Craft Advisory winds with
gusts up to 30 kt. Areas of seas approaching 5 ft. Rain
showers, slight chance of thunderstorms, patchy fog. 

Saturday: Strong winds with gusts up to 40 kt. Areas of rough
seas. Chance of rain showers. 

Saturday Night: Low risk for Small Craft Advisory winds with
areas of gusts up to 30 kt. Rough seas up to 11 ft. 

Sunday: Winds less than 25 kt. Local rough seas. 

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

Monday: Winds less than 25 kt. Seas locally approaching 5 ft.
Chance of rain showers, slight chance of thunderstorms.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Gale Watch from late Friday night through Saturday evening for 
     ANZ230-250-251-280.
     Gale Watch from Saturday morning through Saturday evening for 
     ANZ231>237-254>256-281>283.

&&

$$

DISCUSSION...Frank/Mensch
AVIATION...Frank/Mensch
MARINE...Mensch

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