Lexington Weather

Current Conditions [‒] Current Conditions [+]

80.4°F Warmer than last hour.

26.9°C

Feels like 81.1°F

Hot

Clear

This Afternoon: Hi 87 °F

Tonight: Lo 59 °F

Dew Point: 59.5°F Decreased 0.9°F since last hour.

Humidity: 49% Decreased 6.0% since last hour.

Air Quality Index: 37

Good

(Ozone)

Barometer: 30.03 in Falling 0.03 inHg/hr

1017 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Monday: 0.01 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 2 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

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

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Tue Jun 9, 2026 6:55am EDT

Overview:

- Dry conditions and low humidity continue through tonight leading to another pleasant day.

- Diurnal thunderstorms possible Wednesday through Friday, with above normal temperatures peaking on Friday.

- Temperatures remain warm, but humidity decreases, throughout the weekend, while uncertainty remains high regarding potential for rain showers.

This Afternoon:

Sunny

Hi 87 °F

Sunny, with a high near 87. West wind around 13 mph, with gusts as high as 23 mph.

Tonight:

Mostly Clear

Lo 59 °F

Mostly clear, with a low around 59. Southwest wind 6 to 10 mph.

Wednesday:

Partly Sunny then Chance Rain Showers

Hi 88 °F

A chance of rain showers after 2pm. Partly sunny. High near 88, with temperatures falling to around 81 in the afternoon. Southwest wind 6 to 14 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

Wednesday Night:

Chance Rain Showers

Lo 64 °F

A chance of rain showers before 5am. Mostly cloudy, with a low around 64. Southwest wind 5 to 13 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

Thursday:

Showers And T-Storms Likely

Hi 90 °F

Thursday: Showers And Thunderstorms Likely

A chance of rain showers between 8am and 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 90. West wind around 7 mph. Chance of precipitation is 60%.

Thursday Night:

Chance Showers And T-Storms then Slight Chance Showers And T-Storms

Lo 64 °F

Thursday Night: Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms

A chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 64. West wind 2 to 6 mph. Chance of precipitation is 50%.

Friday:

Slight Chance Rain Showers

Hi 85 °F

A slight chance of rain showers before 5pm. Partly sunny, with a high near 85. Northeast wind 2 to 8 mph.

Friday Night:

Chance Rain Showers

Lo 63 °F

A chance of rain showers before 2am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 63. Southeast wind 2 to 7 mph. Chance of precipitation is 30%.

Saturday:

Chance Showers And T-Storms then Slight Chance Showers And T-Storms

Hi 85 °F

Saturday: Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms

A chance of showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms between 11am and 5pm. Partly sunny, with a high near 85. West wind 2 to 7 mph. Chance of precipitation is 30%.

Saturday Night:

Partly Cloudy

Lo 64 °F

Partly cloudy, with a low around 64. West wind around 6 mph.

Sunday:

Sunny

Hi 89 °F

Sunny, with a high near 89. West wind 3 to 9 mph.

Sunday Night:

Partly Cloudy then Slight Chance Rain Showers

Lo 62 °F

A slight chance of rain showers after 2am. Partly cloudy, with a low around 62. West wind 3 to 8 mph.

Monday:

Chance Rain Showers

Hi 83 °F

A chance of rain showers. Mostly sunny, with a high near 83. East wind 3 to 8 mph. Chance of precipitation is 30%.

Monday Night:

Chance Rain Showers

Lo 61 °F

A chance of rain showers. Mostly cloudy, with a low around 61. Southeast wind around 7 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 1pm through Thu 12am

Issued by:
National Weather Service Boston / Norton, MA
Updated Tue Jun 9, 2026 6:55am EDT

1:00pm

Sunny

83°F
Dew Pt 55°F
Wind from W

W 12 mph
Precip: 0%

2:00pm

Sunny

85°F
Dew Pt 55°F
Wind from W

W 13 mph
Precip: 0%

3:00pm

Sunny

86°F
Dew Pt 55°F
Wind from W

W 12 mph
Precip: 0%

4:00pm

Sunny

87°F
Dew Pt 55°F
Wind from W

W 12 mph
Precip: 0%

5:00pm

Sunny

87°F
Dew Pt 55°F
Wind from W

W 12 mph
Precip: 0%

6:00pm

Mostly Clear

84°F
Dew Pt 55°F
Wind from SW

SW 10 mph
Precip: 0%

7:00pm

Mostly Clear

80°F
Dew Pt 56°F
Wind from SW

SW 9 mph
Precip: 0%

8:00pm

Mostly Clear

76°F
Dew Pt 56°F
Wind from SW

SW 8 mph
Precip: 0%

9:00pm

Mostly Clear

73°F
Dew Pt 54°F
Wind from SW

SW 8 mph
Precip: 0%

10:00pm

Mostly Clear

70°F
Dew Pt 51°F
Wind from SW

SW 8 mph
Precip: 0%

11:00pm

Mostly Clear

67°F
Dew Pt 51°F
Wind from SW

SW 8 mph
Precip: 0%

Wed
12:00am

Mostly Clear

65°F
Dew Pt 51°F
Wind from SW

SW 7 mph
Precip: 0%

Wed
1:00am

Mostly Clear

63°F
Dew Pt 51°F
Wind from SW

SW 7 mph
Precip: 0%

Wed
2:00am

Partly Cloudy

61°F
Dew Pt 52°F
Wind from SW

SW 6 mph
Precip: 0%

Wed
3:00am

Partly Cloudy

60°F
Dew Pt 53°F
Wind from SW

SW 6 mph
Precip: 0%

Wed
4:00am

Mostly Clear

59°F
Dew Pt 53°F
Wind from SW

SW 6 mph
Precip: 0%

Wed
5:00am

Partly Cloudy

59°F
Dew Pt 54°F
Wind from SW

SW 6 mph
Precip: 0%

Wed
6:00am

Mostly Sunny

60°F
Dew Pt 53°F
Wind from SW

SW 6 mph
Precip: 1%

Wed
7:00am

Partly Sunny

63°F
Dew Pt 55°F
Wind from SW

SW 7 mph
Precip: 1%

Wed
8:00am

Partly Sunny

67°F
Dew Pt 56°F
Wind from SW

SW 7 mph
Precip: 3%

Wed
9:00am

Partly Sunny

71°F
Dew Pt 58°F
Wind from SW

SW 8 mph
Precip: 3%

Wed
10:00am

Partly Sunny

76°F
Dew Pt 60°F
Wind from SW

SW 8 mph
Precip: 0%

Wed
11:00am

Partly Sunny

80°F
Dew Pt 62°F
Heat Index: 81°F
Wind from SW

SW 9 mph
Precip: 0%

Wed
12:00pm

Partly Sunny

83°F
Dew Pt 62°F
Heat Index: 84°F
Wind from SW

SW 10 mph
Precip: 1%

Wed
1:00pm

Partly Sunny

84°F
Dew Pt 63°F
Heat Index: 85°F
Wind from SW

SW 13 mph
Precip: 4%

Wed
2:00pm

Slight Chance Rain Showers

85°F
Dew Pt 63°F
Heat Index: 86°F
Wind from SW

SW 14 mph
Precip: 18%
Rain: 0.01 in

Wed
3:00pm

Chance Rain Showers

84°F
Dew Pt 64°F
Heat Index: 85°F
Wind from SW

SW 14 mph
Precip: 29%
Rain: 0.02 in

Wed
4:00pm

Chance Rain Showers

83°F
Dew Pt 65°F
Heat Index: 85°F
Wind from SW

SW 13 mph
Precip: 31%
Rain: 0.02 in

Wed
5:00pm

Slight Chance Rain Showers

81°F
Dew Pt 65°F
Heat Index: 83°F
Wind from SW

SW 13 mph
Precip: 24%
Rain: 0.01 in

Wed
6:00pm

Slight Chance Rain Showers

80°F
Dew Pt 65°F
Heat Index: 82°F
Wind from SW

SW 13 mph
Precip: 21%
Rain: 0.01 in

Wed
7:00pm

Slight Chance Rain Showers

78°F
Dew Pt 65°F
Wind from SW

SW 12 mph
Precip: 21%
Rain: 0.01 in

Wed
8:00pm

Chance Rain Showers

75°F
Dew Pt 65°F
Wind from S

S 12 mph
Precip: 30%

Wed
9:00pm

Chance Rain Showers

72°F
Dew Pt 64°F
Wind from S

S 8 mph
Precip: 35%

Wed
10:00pm

Chance Rain Showers

70°F
Dew Pt 64°F
Wind from S

S 8 mph
Precip: 41%

Wed
11:00pm

Chance Rain Showers

69°F
Dew Pt 64°F
Wind from S

S 7 mph
Precip: 47%

Thu
12:00am

Chance Rain Showers

68°F
Dew Pt 64°F
Wind from S

S 7 mph
Precip: 43%

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
for Boston / Norton, MA

        
000
FXUS61 KBOX 091120
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
720 AM EDT Tue Jun 9 2026

.WHAT HAS CHANGED...

No significant forecast changes.

&&

.KEY MESSAGES...

- Dry conditions and low humidity continue through tonight
  leading to another pleasant day.

- Diurnal thunderstorms possible Wednesday through Friday,
  with above normal temperatures peaking on Friday.

- Temperatures remain warm, but humidity decreases, throughout 
  the weekend, while uncertainty remains high regarding 
  potential for rain showers.

&&

.DISCUSSION...

KEY MESSAGE 1...Dry conditions and low humidity continue 
through tonight leading to another pleasant day.

The high pressure system sitting south of Long Island will 
continue to slowly meander further south throughout today, 
allowing for the continuation of dry conditions and mostly clear
skies. Temperatures will continue to warm over the next week, 
aided by southwesterly flow, bringing today's high temperatures 
well into the 80s, with the exception of the immediate south 
coast, Cape, and Islands, where temperatures should remain in 
the low to mid 70s. Dewpoints will remain generally below 55, so
humidity levels will remain quite comfortable despite the warm 
temperatures.

KEY MESSAGE 2...Diurnal thunderstorms possible Wednesday 
through Friday, with above normal temperatures peaking on 
Friday.

As the high pressure system moves south, dew points will surge 
generally in the mid to upper 60s... possible to near 70 degrees
in some areas. While the combination of heat and humidity will 
create enough instability for elevated chances for the 
development of scattered showers and thunderstorms, several weak
disturbances moving through the upper atmosphere could help 
trigger this activity, particularly during the afternoon and 
evening hours.

There remains little indication of a widespread severe weather 
event at this time. Guidance continues to indicate a possible 
weak warm front, somewhat limited instability, and weaker wind 
shear on Friday. Even so, a few stronger storms cannot be ruled 
out. The latest CSU machine-learning guidance continues to 
indicate a 5 to 15 percent probability of severe weather 
Thursday into Friday, with slightly higher probabilities of 15 
to 30 percent across portions of Connecticut. Forecast 
confidence regarding thunderstorm coverage and intensity should 
improve as higher-resolution guidance becomes available over the
next couple of days.

Confidence is slowly increasing that heat and humidity could 
pose a risk, especially Thursday and Friday when heat index 
values may approach 100 degrees in parts of the Connecticut 
River Valley. These values are associated with moderate to major
heat impacts, increasing the risk of heat-related illness for 
anyone spending extended time outdoors without adequate 
hydration or access to cooling.

KEY MESSAGE 3...Temperatures remain warm, but humidity 
decreases, throughout the weekend, while uncertainty remains 
high regarding potential for rain showers.

By the weekend, a mid-level ridge is expected to strengthen 
over southern New England, promoting rising heights aloft and a 
somewhat drier air mass. Some ensemble guidance is even 
indicating a quick low spinning up over southern New England 
Saturday or Sunday, which introduces the potential for some 
spotty rain showers. Regardless, temperatures will remain quite 
warm, but dew points should fall back into the 50s, resulting in
noticeably more comfortable conditions.

&&

.AVIATION /12Z TUESDAY THROUGH SATURDAY/...

Forecaster Confidence Levels...

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

12z TAF Update...High confidence.

VFR conditions continue today into much of Wednesday. Some MVFR
to localized IFR conditions may overspread parts of the region 
from southwest to northeast by late Wednesday afternoon/early
evening along with a few showers. 

SW winds will gust around 20 knots this afternoon...except 
25-30 knots towards the Cape. Gusts diminish early this 
evening...but may linger a bit longer near the upper
Cape/Buzzards Bay area.

KBOS Terminal...High confidence in TAF. 

KBDL Terminal...High confidence in TAF.

Outlook /Wednesday Night through Saturday/...

Wednesday Night: Mainly VFR, with areas IFR possible. Breezy.
Chance SHRA, slight chance TSRA.

Thursday: VFR. Chance SHRA, slight chance TSRA.

Thursday Night through Friday: Mainly VFR, with local MVFR
possible. Slight chance SHRA, slight chance TSRA.

Friday Night: VFR. Chance SHRA, slight chance TSRA.

Saturday: VFR. Slight chance SHRA, slight chance TSRA.

&&

.MARINE...
Forecaster Confidence Levels...

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

Through Wednesday Morning...High confidence.

High pressure centered across the mid-Atlantic states will 
continue to slowly sink southward through Tuesday night, with 
winds already shifting SW. Good mixing over the land should 
yield SW wind gusts around 25 knots across our nearshore 
southern waters Tuesday afternoon, prompting the continuation of
Small Craft Advisories. The rest of the region should generally
remain below small craft advisory criteria through Wednesday 
morning.

Outlook /Wednesday Night through Saturday/...

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

Thursday: Winds less than 25 kt. Local rough seas. Slight
chance of rain showers, slight chance of thunderstorms. 

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

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

Friday Night through Saturday: Winds less than 25 kt. Slight
chance of rain showers.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 7 PM EDT this evening for 
     ANZ231>236.

&&

$$

DISCUSSION...McMinn
AVIATION...Frank
MARINE...McMinn

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