Lexington Weather

Current Conditions [‒] Current Conditions [+]

47.7°F Colder than last hour.

8.7°C

Chilly

Overcast

Tonight: Lo 43 °F

Friday: Hi 64 °F

Dew Point: 41.7°F Decreased 4.3°F since last hour.

Humidity: 80% Decreased 8.0% since last hour.

Air Quality Index: 17

Good

(Fine Particles)

Barometer: 29.72 in Rising 0.02 inHg/hr

1006 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Thursday: 0.26 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 1 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
Tonight, Friday, & Friday Night through Thursday

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Thu Apr 30, 2026 6:51pm EDT

Overview:

- Mostly clear, breezy, and cooler today and tonight.

- Scattered showers Saturday with a better chance for rainfall Saturday night into Sunday

- A dry and mild start to the week gives way to unsettled conditions mid to late week.

Tonight:

Slight Chance Rain Showers then Mostly Cloudy

Lo 43 °F

A slight chance of rain showers between 10pm and 11pm. Mostly cloudy, with a low around 43. West wind 1 to 6 mph. Chance of precipitation is 20%.

Friday:

Mostly Sunny

Hi 64 °F

Mostly sunny, with a high near 64. Northwest wind 6 to 9 mph.

Friday Night:

Partly Cloudy then Slight Chance Rain Showers

Lo 43 °F

A slight chance of rain showers after 3am. Partly cloudy, with a low around 43. West wind 2 to 6 mph. Chance of precipitation is 20%.

Saturday:

Chance Rain Showers

Hi 59 °F

A chance of rain showers. Mostly cloudy, with a high near 59. Southwest wind 2 to 7 mph. Chance of precipitation is 30%.

Saturday Night:

Chance Rain Showers

Lo 44 °F

A chance of rain showers. Mostly cloudy, with a low around 44. Southwest wind around 6 mph. Chance of precipitation is 50%.

Sunday:

Chance Rain Showers

Hi 57 °F

A chance of rain showers. Mostly cloudy, with a high near 57. Northwest wind 5 to 9 mph. Chance of precipitation is 50%.

Sunday Night:

Slight Chance Rain Showers then Partly Cloudy

Lo 39 °F

A slight chance of rain showers before 7pm. Partly cloudy, with a low around 39. West wind 5 to 8 mph.

Monday:

Sunny

Hi 66 °F

Sunny, with a high near 66. Southwest wind 5 to 14 mph, with gusts as high as 24 mph.

Monday Night:

Slight Chance Rain Showers

Lo 51 °F

A slight chance of rain showers after 11pm. Partly cloudy, with a low around 51. Southwest wind around 12 mph, with gusts as high as 22 mph.

Tuesday:

Slight Chance Rain Showers

Hi 74 °F

A slight chance of rain showers. Mostly sunny, with a high near 74. Southwest wind 10 to 15 mph, with gusts as high as 28 mph.

Tuesday Night:

Slight Chance Rain Showers

Lo 56 °F

A slight chance of rain showers. Partly cloudy, with a low around 56. South wind 10 to 14 mph, with gusts as high as 26 mph.

Wednesday:

Slight Chance Rain Showers

Hi 72 °F

A slight chance of rain showers. Partly sunny, with a high near 72. South wind 9 to 16 mph, with gusts as high as 31 mph.

Wednesday Night:

Rain Showers Likely

Lo 53 °F

Rain showers likely. Mostly cloudy, with a low around 53. South wind 8 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.

Thursday:

Rain Showers Likely

Hi 66 °F

Rain showers likely. Mostly cloudy, with a high near 66. South wind around 10 mph, with gusts as high as 21 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 3am through Sat 2pm

Issued by:
National Weather Service Boston / Norton, MA
Updated Fri May 1, 2026 2:43am EDT

3:00am

Mostly Cloudy

46°F
Dew Pt 42°F
Wind Chill: 43°F
Wind from NW

NW 6 mph
Precip: 2%

4:00am

Mostly Cloudy

45°F
Dew Pt 40°F
Wind Chill: 42°F
Wind from NW

NW 6 mph
Precip: 2%

5:00am

Partly Cloudy

44°F
Dew Pt 39°F
Wind Chill: 41°F
Wind from NW

NW 6 mph
Precip: 1%

6:00am

Mostly Sunny

44°F
Dew Pt 39°F
Wind Chill: 41°F
Wind from NW

NW 6 mph
Precip: 0%

7:00am

Sunny

45°F
Dew Pt 38°F
Wind Chill: 41°F
Wind from NW

NW 7 mph
Precip: 0%

8:00am

Sunny

48°F
Dew Pt 38°F
Wind Chill: 45°F
Wind from NW

NW 7 mph
Precip: 0%

9:00am

Sunny

50°F
Dew Pt 36°F
Wind Chill: 47°F
Wind from NW

NW 7 mph
Precip: 0%

10:00am

Sunny

53°F
Dew Pt 35°F
Wind from NW

NW 8 mph
Precip: 0%

11:00am

Sunny

56°F
Dew Pt 34°F
Wind from NW

NW 8 mph
Precip: 0%

12:00pm

Sunny

58°F
Dew Pt 34°F
Wind from NW

NW 8 mph
Precip: 0%

1:00pm

Sunny

59°F
Dew Pt 33°F
Wind from W

W 9 mph
Precip: 0%

2:00pm

Sunny

61°F
Dew Pt 32°F
Wind from W

W 9 mph
Precip: 0%

3:00pm

Sunny

62°F
Dew Pt 32°F
Wind from W

W 9 mph
Precip: 0%

4:00pm

Sunny

62°F
Dew Pt 31°F
Wind from W

W 8 mph
Precip: 0%

5:00pm

Sunny

62°F
Dew Pt 29°F
Wind from W

W 8 mph
Precip: 0%

6:00pm

Mostly Clear

61°F
Dew Pt 30°F
Wind from W

W 6 mph
Precip: 1%

7:00pm

Mostly Clear

59°F
Dew Pt 31°F
Wind from NW

NW 6 mph
Precip: 1%

8:00pm

Mostly Clear

55°F
Dew Pt 32°F
Wind from NW

NW 5 mph
Precip: 3%

9:00pm

Mostly Clear

53°F
Dew Pt 33°F
Wind from NW

NW 5 mph
Precip: 4%

10:00pm

Mostly Clear

52°F
Dew Pt 33°F
Wind from NW

NW 5 mph
Precip: 4%

11:00pm

Partly Cloudy

50°F
Dew Pt 33°F
Wind Chill: 49°F
Wind from W

W 3 mph
Precip: 5%

Sat
12:00am

Partly Cloudy

49°F
Dew Pt 33°F
Wind Chill: 48°F
Wind from W

W 3 mph
Precip: 5%

Sat
1:00am

Partly Cloudy

48°F
Dew Pt 34°F
Wind from W

W 2 mph
Precip: 5%

Sat
2:00am

Partly Cloudy

47°F
Dew Pt 35°F
Wind from W

W 2 mph
Precip: 14%

Sat
3:00am

Slight Chance Rain Showers

47°F
Dew Pt 35°F
Wind from W

W 2 mph
Precip: 20%

Sat
4:00am

Slight Chance Rain Showers

47°F
Dew Pt 36°F
Wind from W

W 2 mph
Precip: 23%

Sat
5:00am

Slight Chance Rain Showers

46°F
Dew Pt 37°F
Wind from W

W 2 mph
Precip: 23%

Sat
6:00am

Slight Chance Rain Showers

45°F
Dew Pt 38°F
Wind from W

W 2 mph
Precip: 21%

Sat
7:00am

Slight Chance Rain Showers

47°F
Dew Pt 39°F
Wind Chill: 46°F
Wind from W

W 3 mph
Precip: 21%

Sat
8:00am

Chance Rain Showers

50°F
Dew Pt 40°F
Wind Chill: 49°F
Wind from SW

SW 3 mph
Precip: 43%

Sat
9:00am

Chance Rain Showers

51°F
Dew Pt 40°F
Wind from SW

SW 3 mph
Precip: 43%

Sat
10:00am

Chance Rain Showers

53°F
Dew Pt 40°F
Wind from SW

SW 5 mph
Precip: 43%

Sat
11:00am

Chance Rain Showers

55°F
Dew Pt 41°F
Wind from SW

SW 6 mph
Precip: 44%

Sat
12:00pm

Chance Rain Showers

57°F
Dew Pt 41°F
Wind from SW

SW 7 mph
Precip: 44%

Sat
1:00pm

Chance Rain Showers

58°F
Dew Pt 41°F
Wind from SW

SW 7 mph
Precip: 45%

Sat
2:00pm

Chance Rain Showers

58°F
Dew Pt 41°F
Wind from SW

SW 7 mph
Precip: 46%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 010648
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
248 AM EDT Fri May 1 2026

.WHAT HAS CHANGED...
Increased the probability of showers for the Cape and Islands
Saturday night into Sunday.

&&

.KEY MESSAGES...

- Mostly clear, breezy, and cooler today and tonight. 

- Scattered showers Saturday with a better chance for rainfall 
  Saturday night into Sunday

- A dry and mild start to the week gives way to unsettled conditions 
  mid to late week.

&&

.DISCUSSION...

KEY MESSAGE 1... Mostly clear, breezy, and cooler today and tonight. 

Mostly sunny day ahead behind departing low pressure with scattered 
CU developing as New England finds itself on the periphery of an 
upper level low with relatively cold temps aloft. Seasonable temps 
expected with highs low-mid 60s, except cooler higher terrain. 

Dry weather continues for the first half of the overnight. Clouds 
lower and thicken with scattered showers possible after midnight as 
a weak shortwave approaches from the west. Best chance for shower 
activity will be across the interior. 

KEY MESSAGE 2...Scattered showers Saturday with a better chance for 
rainfall Saturday night into Sunday

00z guidance has continued to trend toward a more amplified, further 
west track with the coastal low for this weekend. In fact, the NBM 
50th percentile QPF Saturday night into Sunday has increased to 0.5-
0.75" for much of SE Massachusetts. These changes likely stem from a 
trend towards a significantly deeper longwave trough Saturday night 
and Sunday. Further shifts in the orientation and amplitude of this 
flow could force an even further west track with a risk for rain and 
showers further inland.

Consensus of the low track is still well SE of the 40N/70W benchmark 
at the closest approach of a low pressure trending towards Sunday 
morning. As previously mentioned, the trend has been for increased 
rainfall chances across the Cape and islands, as well as portions of 
the coastal plains of MA and RI. Not looking at much rainfall when 
all is done by Sunday afternoon. Expecting amounts 0.10 inch or less 
north and west of I-495, with perhaps 0.50-0.75 inch across the Cape 
and islands.

KEY MESSAGE 3...A dry and mild start to the week gives way to 
unsettled conditions mid to late week.

Deep trough moves east of the region Monday with increasing heights 
around an amplifying ridge across the Mid Atlantic. It will remain 
mainly dry and breezy Monday ahead of an approaching cold front. 
POPs increase to between 20 and 30 percent Tuesday with the greatest 
risk for showers Wednesday night into Thursday. Mid week weather 
will be largely dependent on a low pressure that moves through the 
Great Lakes and pushes a couple of fronts across our region. Will 
also be quite a bit warmer early next week with highs rising into 
the middle and upper 70s Tuesday and Wednesday.

&&

.AVIATION /06Z FRIDAY THROUGH TUESDAY/...
Forecaster Confidence Levels...

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

06z TAF Update...High confidence in trends. Moderate confidence
in timing.

Patches of MVFR across eastern MA thru the next several hours
with isolated areas of low elevation fog. Otherwise, VFR
develops today and tonight. Chance for scattered showers
late tonight across the interior. Winds 5-10 kt this morning increasing
to 10-15 kt this afternoon, then becoming light overnight.

KBOS Terminal...Moderate confidence in TAF. Main uncertainty is
the when conditions fully improve to VFR 

KBDL Terminal...Moderate confidence in TAF.

Outlook /Saturday Night through Tuesday/...

Saturday Night: Mainly VFR, with areas MVFR possible. Chance
RA.

Sunday: Mainly VFR, with local MVFR possible. Breezy. Chance
RA.

Sunday Night: VFR. 

Monday through Monday Night: VFR. Breezy. 

Tuesday: VFR. Windy with gusts up to 30 kt. Slight chance SHRA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Light NW winds this morning increasing to between 10 and 15 kt 
with gusts up to 25 kt this afternoon and evening. Winds shift
to the SW later this afternoon into the overnight Seas 4-6 ft 
over outer waters will subside late tonight into Saturday. SCA 
for seas will continue until this time. Watching for seas to
increase Sunday afternoon behind a coastal storm. 

Outlook /Saturday Night through Tuesday/...

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

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

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

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

Monday Night: Moderate risk for Small Craft Advisory winds with
gusts up to 30 kt. Seas up to 5 ft. 

Tuesday: Low risk for gale force winds with gusts up to 35 kt.
Areas of rough seas. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 6 PM EDT this evening for ANZ250.
     Small Craft Advisory until 2 AM EDT Saturday for ANZ254>256.

&&

$$

DISCUSSION...FT
AVIATION...FT
MARINE...FT

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