Lexington Weather

Current Conditions [‒] Current Conditions [+]

74.8°F Warmer than last hour.

23.8°C

Warm

Partly cloudy

Today: Hi 80 °F

Tonight: Lo 59 °F

Dew Point: 57.0°F Decreased 2.2°F since last hour.

Humidity: 54% Decreased 8.0% since last hour.

Air Quality Index: 28

Good

(Ozone)

Barometer: 29.75 in S

1007 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Saturday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: 1 mph

Gusts: 2 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

NWS Weather Forecast -
Today, Tonight, & Monday through Saturday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sun Jun 21, 2026 6:17am EDT

Overview:

- While the risk for severe weather remains low, scattered diurnal showers and thunderstorms are possible today. Otherwise, not as gusty.

- Periods of heavy rain possible Monday into early Tuesday. Drier air with seasonable temperatures expected midweek. Chances for rain return for the end of next week.

Today:

Mostly Sunny then Slight Chance Showers And T-Storms

Hi 80 °F

Today: Mostly Sunny then Slight Chance Showers And Thunderstorms

A slight chance of showers and thunderstorms between 3pm and 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 80. Northwest wind 6 to 9 mph. Chance of precipitation is 30%.

Tonight:

Partly Cloudy

Lo 59 °F

Partly cloudy, with a low around 59. West wind 2 to 7 mph.

Monday:

Mostly Cloudy then Chance Showers And T-Storms

Hi 79 °F

Monday: Mostly Cloudy then Chance Showers And Thunderstorms

A chance of rain showers between noon and 5pm, then a chance of showers and thunderstorms. Mostly cloudy. High near 79, with temperatures falling to around 72 in the afternoon. Southwest wind 0 to 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.

Monday Night:

Showers And T-Storms

Lo 60 °F

Showers and thunderstorms. Cloudy, with a low around 60. South wind around 7 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Tuesday:

Rain Showers

Hi 78 °F

Rain showers. Mostly cloudy, with a high near 78. Northwest wind around 7 mph. Chance of precipitation is 80%.

Tuesday Night:

Slight Chance Rain Showers then Partly Cloudy

Lo 61 °F

A slight chance of rain showers before 7pm. Partly cloudy, with a low around 61. Northwest wind around 5 mph. Chance of precipitation is 20%.

Wednesday:

Sunny

Hi 84 °F

Sunny, with a high near 84. Northwest wind around 6 mph.

Wednesday Night:

Mostly Clear

Lo 62 °F

Mostly clear, with a low around 62. West wind around 5 mph.

Thursday:

Sunny

Hi 84 °F

Sunny, with a high near 84. Southwest wind 2 to 7 mph.

Thursday Night:

Partly Cloudy then Chance Rain Showers

Lo 63 °F

A chance of rain showers after midnight. Partly cloudy, with a low around 63. South wind 3 to 7 mph. Chance of precipitation is 30%.

Friday:

Chance Rain Showers

Hi 80 °F

A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 80. South wind 3 to 9 mph. Chance of precipitation is 50%.

Friday Night:

Chance Showers And T-Storms

Lo 64 °F

Friday Night: Chance Showers And Thunderstorms

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 64. Southwest wind 5 to 8 mph. Chance of precipitation is 50%.

Saturday:

Chance Showers And T-Storms

Hi 86 °F

Saturday: Chance Showers And Thunderstorms

A slight chance of rain showers between 9am and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 86. Southwest wind 5 to 8 mph. Chance of precipitation is 30%.

Saturday Night:

Chance Showers And T-Storms then Partly Cloudy

Lo 64 °F

Saturday Night: Chance Showers And Thunderstorms then Partly Cloudy

A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 64. West wind around 6 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 12pm through Mon 11pm

Issued by:
National Weather Service Boston / Norton, MA
Updated Sun Jun 21, 2026 6:17am EDT

12:00pm

Sunny

76°F
Dew Pt 55°F
Wind from W

W 7 mph
Precip: 4%

1:00pm

Mostly Sunny

77°F
Dew Pt 54°F
Wind from W

W 8 mph
Precip: 6%

2:00pm

Mostly Sunny

78°F
Dew Pt 54°F
Wind from W

W 9 mph
Precip: 14%

3:00pm

Slight Chance Showers And Thunderstorms

78°F
Dew Pt 54°F
Wind from W

W 9 mph
Precip: 19%

4:00pm

Chance Showers And Thunderstorms

77°F
Dew Pt 54°F
Wind from NW

NW 9 mph
Precip: 27%

5:00pm

Slight Chance Showers And Thunderstorms

77°F
Dew Pt 55°F
Wind from NW

NW 8 mph
Precip: 24%

6:00pm

Partly Cloudy

75°F
Dew Pt 56°F
Wind from NW

NW 7 mph
Precip: 14%

7:00pm

Mostly Clear

74°F
Dew Pt 56°F
Wind from NW

NW 6 mph
Precip: 9%

8:00pm

Mostly Clear

71°F
Dew Pt 58°F
Wind from W

W 2 mph
Precip: 3%

9:00pm

Mostly Clear

69°F
Dew Pt 58°F
Wind from NW

NW 2 mph
Precip: 2%

10:00pm

Mostly Clear

67°F
Dew Pt 58°F
Wind from W

W 2 mph
Precip: 1%

11:00pm

Partly Cloudy

65°F
Dew Pt 58°F
Wind from W

W 2 mph
Precip: 0%

Mon
12:00am

Partly Cloudy

64°F
Dew Pt 58°F
Wind from W

W 2 mph
Precip: 0%

Mon
1:00am

Mostly Clear

63°F
Dew Pt 57°F
Wind from W

W 2 mph
Precip: 0%

Mon
2:00am

Mostly Clear

62°F
Dew Pt 57°F
Wind from W

W 2 mph
Precip: 0%

Mon
3:00am

Partly Cloudy

61°F
Dew Pt 56°F
Wind from W

W 2 mph
Precip: 0%

Mon
4:00am

Partly Cloudy

60°F
Dew Pt 56°F
Wind from W

W 2 mph
Precip: 0%

Mon
5:00am

Partly Cloudy

59°F
Dew Pt 55°F
Wind from W

W 2 mph
Precip: 0%

Mon
6:00am

Mostly Sunny

60°F
Dew Pt 56°F
Wind from W

W 2 mph
Precip: 0%

Mon
7:00am

Mostly Sunny

63°F
Dew Pt 57°F
Wind from W

W 1 mph
Precip: 1%

Mon
8:00am

Partly Sunny

67°F
Dew Pt 58°F
Wind from

0 mph
Precip: 4%
Rain: 0.02 in

Mon
9:00am

Partly Sunny

71°F
Dew Pt 59°F
Wind from S

S 1 mph
Precip: 5%

Mon
10:00am

Mostly Cloudy

74°F
Dew Pt 59°F
Wind from S

S 2 mph
Precip: 1%

Mon
11:00am

Mostly Cloudy

76°F
Dew Pt 59°F
Wind from S

S 3 mph
Precip: 7%

Mon
12:00pm

Slight Chance Rain Showers

76°F
Dew Pt 59°F
Wind from SW

SW 5 mph
Precip: 21%
Rain: 0.01 in

Mon
1:00pm

Chance Rain Showers

75°F
Dew Pt 60°F
Wind from SW

SW 6 mph
Precip: 32%
Rain: 0.05 in

Mon
2:00pm

Chance Rain Showers

75°F
Dew Pt 61°F
Wind from S

S 7 mph
Precip: 36%
Rain: 0.02 in

Mon
3:00pm

Chance Rain Showers

74°F
Dew Pt 61°F
Wind from S

S 7 mph
Precip: 35%
Rain: 0.02 in

Mon
4:00pm

Chance Rain Showers

73°F
Dew Pt 62°F
Wind from SE

SE 7 mph
Precip: 34%
Rain: 0.02 in

Mon
5:00pm

Chance Showers And Thunderstorms

72°F
Dew Pt 62°F
Wind from SE

SE 7 mph
Precip: 35%
Rain: 0.02 in

Mon
6:00pm

Showers And Thunderstorms Likely

71°F
Dew Pt 63°F
Wind from SE

SE 7 mph
Precip: 59%
Rain: 0.03 in

Mon
7:00pm

Showers And Thunderstorms

70°F
Dew Pt 62°F
Wind from SE

SE 6 mph
Precip: 75%
Rain: 0.04 in

Mon
8:00pm

Showers And Thunderstorms

68°F
Dew Pt 62°F
Wind from SE

SE 6 mph
Precip: 95%
Rain: 0.09 in

Mon
9:00pm

Showers And Thunderstorms

67°F
Dew Pt 63°F
Wind from SE

SE 6 mph
Precip: 96%
Rain: 0.09 in

Mon
10:00pm

Showers And Thunderstorms

66°F
Dew Pt 63°F
Wind from SE

SE 6 mph
Precip: 96%
Rain: 0.09 in

Mon
11:00pm

Showers And Thunderstorms

66°F
Dew Pt 63°F
Wind from SE

SE 7 mph
Precip: 96%
Rain: 0.09 in

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 211217
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
817 AM EDT Sun Jun 21 2026

.WHAT HAS CHANGED...
Forecast remains on track.

&&

.KEY MESSAGES...

- While the risk for severe weather remains low, scattered
  diurnal showers and thunderstorms are possible today.
  Otherwise, not as gusty.

- Periods of heavy rain possible Monday into early Tuesday.
  Drier air with seasonable temperatures expected midweek.
  Chances for rain return for the end of next week.

&&

.DISCUSSION...
KEY MESSAGE 1...While the risk for severe weather remains low,
scattered diurnal showers and thunderstorms are possible 
today. Otherwise, not as gusty.

Not much change to the overall synoptic pattern today. We will
still have a mid level trough over eastern Canada as well as
another sheared shortwave this afternoon and evening. Projected
CAPE values still between 500-1,000 J/kg. Almost no vertical
shear to speak of, so not overly concerned about the prospects
for severe weather. This should be enough for another round of
scattered afternoon showers and thunderstorms. The greatest risk
is towards northeast MA. 

Tricky forecast with respect to coastal winds. Westerly winds do
look to be just strong enough to prevent the seabreeze from
moving too far inland. A seabreeze front could provide a greater
focus for showers and thunderstorms. At this time, expecting
only local seabreezes rather than the typical front which pushes
inland to the I-95 corridor. This will need to be monitored
through today.

KEY MESSAGE 2...Periods of heavy rain possible Monday into early
Tuesday. Drier air with seasonable temperatures expected
midweek. Chances for rain return for the end of next week.

A low pressure system is expected to bring a widespread, soaking
rainfall to southern New England from Monday afternoon into
Tuesday. The probability for 1+ inch of storm total rainfall was
still between 70 to 80 percent across most of our region. The 
probability for 2+ inches of rainfall remained about 30 to 50 
percent, greatest across western MA and CT. Groundwater and
streamflow observations were less than the 10th percentile. 
This indicates we have plenty of room to accommodate this 
rainfall. Perhaps a different story in the urban areas. While 
there could be thunderstorms, we do not anticipate these to be 
strong enough to result in flooding. This will still need to be 
monitored. We should dry out from west to east as a low pressure
along the south coast of New England moves offshore.

High pressure builds into the region behind this system, 
providing drier with and seasonable temperatures for the middle 
of the week. Chances for rain begin to increase once again by 
the end of the work week.

&&

.AVIATION /12Z SUNDAY THROUGH THURSDAY/...
Forecaster Confidence Levels...

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

Today: High confidence.

VFR. W/WNW 6-12 mph. A few brief gusts up to 18 kts possible
late morning-early afternoon. It is possible if winds end up
lighter, a sea breeze may develop late afteroon. There is a low
risk for an isolated shower or storm after 2 PM through this
evening. 

Tonight: High Confidence.

VFR with light and variable winds.

Monday: High confidence.

VFR for most of the day. S/SSE 8-12 kts. MVFR ceilings arrive 
from west to east in the afternoon with the arrival of rain. 

KBOS Terminal...Moderate confidence in TAF. Have some concern 
for a seabreeze if winds slacken later today. Most likely time 
for a seabreeze would be between 20-00Z. There is also a low
risk (<20%) for an isolated shower or storm at or near the
terminal late afternoon/early evening mainly after 20Z. 
 
KBDL Terminal...High confidence in TAF.

Outlook /Monday Night through Thursday/...

Monday Night: Mainly MVFR, with areas IFR possible. Breezy.
SHRA, slight chance TSRA.

Tuesday: Mainly VFR, with local IFR possible. Breezy. Chance
SHRA.

Tuesday Night through Thursday: VFR. 

&&

.MARINE...
Forecaster Confidence Levels...

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

Small Craft Advisories will be allowed to end early this morning.
Risk for scattered showers and isolated thunderstorms this
afternoon and evening, especially near the east coast. Any 
showers and thunderstorms should diminish after sunset.

Outlook /Monday Night through Thursday/...

Monday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Areas of seas approaching 5 ft. Rain
showers, slight chance of thunderstorms. 

Tuesday: Winds less than 25 kt. Seas up to 5 ft. Chance of rain
showers, slight chance of thunderstorms. 

Tuesday Night: Winds less than 25 kt. Seas up to 5 ft. Slight
chance of rain showers. 

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

Thursday: Winds less than 25 kt. 

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...None.

&&

$$

DISCUSSION...Belk/McMinn
AVIATION...Belk/Mensch
MARINE...Belk/McMinn

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