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Lexington Weather

Lexington, Massachusetts, USA

53°F
5/15/2026 4:42pm 
  • Lexington Conditions: Light rain, Mist, Overcast
  • Temperature: 53.4°F / 11.9°C 
  • Dew Point: 51.1°F 
  • Relative Humidity: 92
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 29.86 in Steady
  • Visibility: 2 miles
  • Rain Today: 0.00 in
  •   

Current Conditions [‒] Current Conditions [+]

53.4°F  

11.9°C

 

 Cool 

Light rain, Mist, Overcast

Light rain, Mist, Overcast

This Afternoon:  Hi 55 °F

Tonight:  Lo 46 °F

 

Dew Point:  51.1°F  

Humidity:  92%  

 

Air Quality Index: 33

 Good 

(Ozone)

Barometer:  29.86 in S

1011 mb

 

Rain Rate:  0.00 in/hr

Rain Today:  0.00 in

Rain Thursday 0.43 in

Visibility: 2 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

Calm wind


Forecast [‒] Forecast [+]

NWS Weather Forecast -
This Afternoon, Tonight, & Saturday through Thursday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Fri May 15, 2026 2:30pm EDT


Overview:

- Dreary conditions continue today with fog possible overnight before warm-up kicks off Saturday.

- Unseasonably warm temps Sun through Wed with near record high temps into the 90s possible Tue and/or Wed.

- Strong to severe thunderstorms possible by Tue with perhaps a better potential by Wed but a lot needs to be sorted out.

- Seasonable temperatures return by next Thu and Fri.


This Afternoon:

Mostly Cloudy

Hi 55 °F

This Afternoon: Mostly Cloudy

Mostly cloudy, with a high near 55. Northeast wind around 8 mph.


Tonight:

Partly Cloudy

Lo 46 °F

Tonight: Partly Cloudy

Partly cloudy, with a low around 46. Northwest wind 2 to 6 mph.


Saturday:

Sunny

Hi 76 °F

Saturday: Sunny

Sunny, with a high near 76. Southwest wind 6 to 10 mph.


Saturday Night:

Partly Cloudy then Scattered Rain Showers

Lo 59 °F

Saturday Night: Partly Cloudy then Scattered Rain Showers

Scattered rain showers between midnight and 5am. Partly cloudy, with a low around 59. Southwest wind around 10 mph. Chance of precipitation is 30%.


Sunday:

Sunny

Hi 84 °F

Sunday: Sunny

Sunny, with a high near 84. West wind 7 to 13 mph, with gusts as high as 24 mph.


Sunday Night:

Mostly Clear

Lo 54 °F

Sunday Night: Mostly Clear

Mostly clear, with a low around 54. North wind 2 to 10 mph.


Monday:

Mostly Sunny

Hi 77 °F

Monday: Mostly Sunny

Mostly sunny, with a high near 77. East wind 2 to 8 mph.


Monday Night:

Mostly Clear

Lo 58 °F

Monday Night: Mostly Clear

Mostly clear, with a low around 58. South wind 6 to 9 mph.


Tuesday:

Sunny

Hi 91 °F

Tuesday: Sunny

Sunny, with a high near 91. Southwest wind 6 to 10 mph.


Tuesday Night:

Partly Cloudy

Lo 66 °F

Tuesday Night: Partly Cloudy

Partly cloudy, with a low around 66. Southwest wind 6 to 9 mph.


Wednesday:

Mostly Sunny then Scattered Showers And T-Storms

Hi 88 °F

Wednesday: Mostly Sunny then Scattered Showers And Thunderstorms

Scattered showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Southwest wind 6 to 10 mph. Chance of precipitation is 50%.


Wednesday Night:

Scattered Showers And T-Storms

Lo 57 °F

Wednesday Night: Scattered Showers And Thunderstorms

Scattered showers and thunderstorms before 2am. Mostly cloudy, with a low around 57. West wind around 8 mph. Chance of precipitation is 40%.


Thursday:

Slight Chance Rain Showers

Hi 69 °F

Thursday: Slight Chance Rain Showers

A slight chance of rain showers between 8am and 2pm. Mostly sunny, with a high near 69. Northwest wind around 7 mph.


Thursday Night:

Partly Cloudy

Lo 50 °F

Thursday Night: Partly Cloudy

Partly cloudy, with a low around 50. Northwest wind 2 to 6 mph.


NWS Hourly Forecast -
Today 4pm through Sun 3am

Issued by:
National Weather Service Boston / Norton, MA
Updated Fri May 15, 2026 2:30pm EDT

 
4:00pm
Fri 4:00pm: Cloudy
Cloudy
54°F
Dew Pt 49°F
Wind from N N 8 mph
Precip: 6%
 
5:00pm
Fri 5:00pm: Mostly Cloudy
Mostly Cloudy
54°F
Dew Pt 48°F
Wind from N N 8 mph
Precip: 5%
 
6:00pm
Fri 6:00pm: Mostly Cloudy
Mostly Cloudy
54°F
Dew Pt 48°F
Wind from NE NE 6 mph
Precip: 4%
 
7:00pm
Fri 7:00pm: Mostly Cloudy
Mostly Cloudy
53°F
Dew Pt 47°F
Wind from N N 5 mph
Precip: 3%
 
8:00pm
Fri 8:00pm: Mostly Cloudy
Mostly Cloudy
52°F
Dew Pt 48°F
Wind from N N 2 mph
Precip: 2%
 
9:00pm
Fri 9:00pm: Partly Cloudy
Partly Cloudy
50°F
Dew Pt 47°F
Wind from NW NW 2 mph
Precip: 1%
 
10:00pm
Fri 10:00pm: Mostly Clear
Mostly Clear
49°F
Dew Pt 47°F
Wind from NW NW 2 mph
Precip: 1%
 
11:00pm
Fri 11:00pm: Mostly Clear
Mostly Clear
47°F
Dew Pt 46°F
Wind from W W 2 mph
Precip: 1%
Sat
12:00am
Sat 12:00am: Mostly Clear
Mostly Clear
47°F
Dew Pt 46°F
Wind Chill: 46°F
Wind from W W 3 mph
Precip: 1%
Sat
1:00am
Sat 1:00am: Mostly Clear
Mostly Clear
47°F
Dew Pt 46°F
Wind Chill: 46°F
Wind from W W 3 mph
Precip: 1%
Sat
2:00am
Sat 2:00am: Mostly Clear
Mostly Clear
46°F
Dew Pt 45°F
Wind Chill: 45°F
Wind from W W 3 mph
Precip: 1%
Sat
3:00am
Sat 3:00am: Partly Cloudy
Partly Cloudy
46°F
Dew Pt 45°F
Wind Chill: 44°F
Wind from SW SW 5 mph
Precip: 1%
Sat
4:00am
Sat 4:00am: Partly Cloudy
Partly Cloudy
47°F
Dew Pt 45°F
Wind Chill: 45°F
Wind from SW SW 5 mph
Precip: 1%
Sat
5:00am
Sat 5:00am: Partly Cloudy
Partly Cloudy
47°F
Dew Pt 45°F
Wind Chill: 45°F
Wind from SW SW 5 mph
Precip: 0%
Sat
6:00am
Sat 6:00am: Mostly Sunny
Mostly Sunny
48°F
Dew Pt 46°F
Wind Chill: 45°F
Wind from SW SW 6 mph
Precip: 0%
Sat
7:00am
Sat 7:00am: Sunny
Sunny
50°F
Dew Pt 48°F
Wind Chill: 48°F
Wind from SW SW 6 mph
Precip: 0%
Sat
8:00am
Sat 8:00am: Sunny
Sunny
55°F
Dew Pt 49°F
Wind from SW SW 6 mph
Precip: 0%
Sat
9:00am
Sat 9:00am: Sunny
Sunny
59°F
Dew Pt 50°F
Wind from W W 6 mph
Precip: 0%
Sat
10:00am
Sat 10:00am: Sunny
Sunny
64°F
Dew Pt 50°F
Wind from W W 7 mph
Precip: 0%
Sat
11:00am
Sat 11:00am: Sunny
Sunny
67°F
Dew Pt 50°F
Wind from W W 8 mph
Precip: 0%
Sat
12:00pm
Sat 12:00pm: Sunny
Sunny
70°F
Dew Pt 49°F
Wind from W W 9 mph
Precip: 0%
Sat
1:00pm
Sat 1:00pm: Sunny
Sunny
72°F
Dew Pt 48°F
Wind from SW SW 9 mph
Precip: 0%
Sat
2:00pm
Sat 2:00pm: Sunny
Sunny
73°F
Dew Pt 48°F
Wind from SW SW 9 mph
Precip: 0%
Sat
3:00pm
Sat 3:00pm: Sunny
Sunny
74°F
Dew Pt 48°F
Wind from SW SW 10 mph
Precip: 0%
Sat
4:00pm
Sat 4:00pm: Sunny
Sunny
75°F
Dew Pt 47°F
Wind from SW SW 10 mph
Precip: 0%
Sat
5:00pm
Sat 5:00pm: Sunny
Sunny
75°F
Dew Pt 47°F
Wind from SW SW 10 mph
Precip: 0%
Sat
6:00pm
Sat 6:00pm: Mostly Clear
Mostly Clear
74°F
Dew Pt 48°F
Wind from SW SW 10 mph
Precip: 0%
Sat
7:00pm
Sat 7:00pm: Mostly Clear
Mostly Clear
71°F
Dew Pt 49°F
Wind from SW SW 9 mph
Precip: 0%
Sat
8:00pm
Sat 8:00pm: Mostly Clear
Mostly Clear
68°F
Dew Pt 48°F
Wind from SW SW 10 mph
Precip: 1%
Sat
9:00pm
Sat 9:00pm: Mostly Clear
Mostly Clear
64°F
Dew Pt 48°F
Wind from SW SW 10 mph
Precip: 2%
Sat
10:00pm
Sat 10:00pm: Mostly Clear
Mostly Clear
63°F
Dew Pt 48°F
Wind from SW SW 10 mph
Precip: 3%
Sat
11:00pm
Sat 11:00pm: Partly Cloudy
Partly Cloudy
61°F
Dew Pt 47°F
Wind from SW SW 9 mph
Precip: 4%
Sun
12:00am
Sun 12:00am: Isolated Rain Showers
Isolated Rain Showers
61°F
Dew Pt 47°F
Wind from SW SW 9 mph
Precip: 16%
Sun
1:00am
Sun 1:00am: Scattered Rain Showers
Scattered Rain Showers
61°F
Dew Pt 48°F
Wind from SW SW 9 mph
Precip: 28%
Sun
2:00am
Sun 2:00am: Scattered Rain Showers
Scattered Rain Showers
61°F
Dew Pt 48°F
Wind from SW SW 9 mph
Precip: 28%
Sun
3:00am
Sun 3:00am: Scattered Rain Showers
Scattered Rain Showers
61°F
Dew Pt 49°F
Wind from SW SW 9 mph
Precip: 28%




Radar [‒] Radar [+]

Satellite [‒] Satellite [+]

Satellite images courtesy Weather Underground / Intellicast.

GOES East  

Tap Click image to go to NESDIS

Weather Underground Visible

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Weather Underground Infrared

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UV Forecast [‒] UV Forecast [+]

UV Index forecast from the Environmental Protection Agency

UV Index forecast high for today: 1    Low 

Current (Estimated): 1    Low 

Precipitation [‒] Precipitation [+]

Note: Rain measured automatically by weather station. Rain totals do not necessarily include melted frozen precipitation.

For more accurate, manually measured rain data, see the Local Precip Data page.

0.00 in

Rain Rate (/hr):

0.00 in

Rain Last 60 min:

0.00 in

Rain Today:

0.43 in

Thursday:

1.12 in

May:

8.62 in

2026

51.1 in

Season Snow:

Daily Extremes [‒] Daily Extremes [+]

1:36pm

54.7°F

High today:

6:19am

49.6°F

Low today:

11:25am

62.2°F

High Thursday:

11:43pm

52.9°F

Low Thursday:

6:19am

49.6°F

Low wind chill today:

1:36pm

52.3°F

High dew pt today:

11:24am

57.2°F

High dew pt Thursday:

3:05pm

3 mph

Wind gust today:

11:00am

14 mph

Wind gust Thursday:


Alerts / Advisories [‒] Alerts / Advisories [+]

Sun / Moon [‒] Sun / Moon [+]

Sun

First Light:

4:51am

Sunrise:

5:23am

Sunset:

8:00pm

Twilight ends:

8:32pm

Daylight length:

14 hours 37 minutes

Waning Crescent, Moon age: 28 days, 8 hours, 51 minutes, 2%

Phase:

Waning Crescent (2%)

Moon rise:

4:08am

Moon set:

7:02pm


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