Mastodon Mastodon Mastodon

Lexington Weather

Lexington, Massachusetts, USA

52°F
5/15/2026 8:45pm 
  • Lexington Conditions: Few Clouds
  • Temperature: 52.0°F / 11.1°CColder 1.4°F than last hour.
  • Dew Point: 50.0°FDecreased 1.4°Fsince last hour.
  • Relative Humidity: 93
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 29.92 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.02 in
  •   

Current Conditions [‒] Current Conditions [+]

52.0°F Colder than last hour.

11.1°C

 

 Cool 

Few Clouds

Few Clouds

Tonight:  Lo 46 °F

Saturday:  Hi 77 °F

 

Dew Point:  50.0°F Decreased 1.4°F since last hour.

Humidity:  93%  

 

Air Quality Index: 28

 Good 

(Ozone)

Barometer:  29.92 in S

1013 mb

 

Rain Rate:  0.00 in/hr

Rain Today:  0.02 in

Rain Thursday 0.43 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

Calm wind


Forecast [‒] Forecast [+]

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

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Fri May 15, 2026 8:18pm EDT


Overview:

- 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.


Tonight:

Mostly Clear then Patchy Fog

Lo 46 °F

Tonight: Mostly Clear then Patchy Fog

Patchy fog after 1am. Mostly clear, with a low around 46. West wind around 3 mph.


Saturday:

Patchy Fog then Sunny

Hi 77 °F

Saturday: Patchy Fog then Sunny

Patchy fog before 8am. Sunny, with a high near 77. Southwest wind 5 to 14 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 8 to 14 mph. Chance of precipitation is 30%.


Sunday:

Sunny

Hi 84 °F

Sunday: Sunny

Sunny, with a high near 84. West wind 9 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.


Friday:

Mostly Sunny

Hi 68 °F

Friday: Mostly Sunny

Mostly sunny, with a high near 68. Northwest wind 1 to 6 mph.


NWS Hourly Forecast -
Tonight 8pm through Sun 7am

Issued by:
National Weather Service Boston / Norton, MA
Updated Fri May 15, 2026 8:18pm EDT

 
8:00pm
Fri 8:00pm: Mostly Cloudy
Mostly Cloudy
51°F
Dew Pt 49°F
Wind from NW NW 3 mph
Precip: 0%
 
9:00pm
Fri 9:00pm: Partly Cloudy
Partly Cloudy
51°F
Dew Pt 48°F
Wind from NW NW 3 mph
Precip: 0%
 
10:00pm
Fri 10:00pm: Mostly Clear
Mostly Clear
50°F
Dew Pt 47°F
Wind Chill: 49°F
Wind from NW NW 3 mph
Precip: 0%
 
11:00pm
Fri 11:00pm: Mostly Clear
Mostly Clear
49°F
Dew Pt 46°F
Wind from W W 2 mph
Precip: 0%
Sat
12:00am
Sat 12:00am: Mostly Clear
Mostly Clear
48°F
Dew Pt 46°F
Wind Chill: 47°F
Wind from W W 3 mph
Precip: 0%
Sat
1:00am
Sat 1:00am: Patchy Fog
Patchy Fog
48°F
Dew Pt 46°F
Wind Chill: 47°F
Wind from W W 3 mph
Precip: 0%
Sat
2:00am
Sat 2:00am: Patchy Fog
Patchy Fog
47°F
Dew Pt 45°F
Wind Chill: 46°F
Wind from SW SW 3 mph
Precip: 0%
Sat
3:00am
Sat 3:00am: Patchy Fog
Patchy Fog
46°F
Dew Pt 44°F
Wind Chill: 45°F
Wind from SW SW 3 mph
Precip: 0%
Sat
4:00am
Sat 4:00am: Patchy Fog
Patchy Fog
46°F
Dew Pt 44°F
Wind Chill: 45°F
Wind from SW SW 3 mph
Precip: 0%
Sat
5:00am
Sat 5:00am: Patchy Fog
Patchy Fog
47°F
Dew Pt 44°F
Wind from SW SW 2 mph
Precip: 0%
Sat
6:00am
Sat 6:00am: Patchy Fog
Patchy Fog
49°F
Dew Pt 45°F
Wind Chill: 47°F
Wind from SW SW 5 mph
Precip: 0%
Sat
7:00am
Sat 7:00am: Patchy Fog
Patchy Fog
52°F
Dew Pt 48°F
Wind from SW SW 6 mph
Precip: 0%
Sat
8:00am
Sat 8:00am: Sunny
Sunny
55°F
Dew Pt 50°F
Wind from SW SW 7 mph
Precip: 0%
Sat
9:00am
Sat 9:00am: Sunny
Sunny
59°F
Dew Pt 50°F
Wind from SW SW 8 mph
Precip: 0%
Sat
10:00am
Sat 10:00am: Mostly Sunny
Mostly Sunny
64°F
Dew Pt 49°F
Wind from SW SW 8 mph
Precip: 0%
Sat
11:00am
Sat 11:00am: Mostly Sunny
Mostly Sunny
67°F
Dew Pt 49°F
Wind from SW SW 9 mph
Precip: 0%
Sat
12:00pm
Sat 12:00pm: Sunny
Sunny
70°F
Dew Pt 48°F
Wind from SW SW 10 mph
Precip: 0%
Sat
1:00pm
Sat 1:00pm: Sunny
Sunny
73°F
Dew Pt 47°F
Wind from SW SW 12 mph
Precip: 0%
Sat
2:00pm
Sat 2:00pm: Sunny
Sunny
75°F
Dew Pt 46°F
Wind from SW SW 13 mph
Precip: 0%
Sat
3:00pm
Sat 3:00pm: Sunny
Sunny
76°F
Dew Pt 47°F
Wind from SW SW 14 mph
Precip: 0%
Sat
4:00pm
Sat 4:00pm: Sunny
Sunny
77°F
Dew Pt 46°F
Wind from SW SW 14 mph
Precip: 0%
Sat
5:00pm
Sat 5:00pm: Sunny
Sunny
76°F
Dew Pt 47°F
Wind from SW SW 14 mph
Precip: 0%
Sat
6:00pm
Sat 6:00pm: Mostly Clear
Mostly Clear
74°F
Dew Pt 47°F
Wind from SW SW 14 mph
Precip: 0%
Sat
7:00pm
Sat 7:00pm: Mostly Clear
Mostly Clear
71°F
Dew Pt 48°F
Wind from SW SW 13 mph
Precip: 0%
Sat
8:00pm
Sat 8:00pm: Mostly Clear
Mostly Clear
68°F
Dew Pt 48°F
Wind from SW SW 12 mph
Precip: 0%
Sat
9:00pm
Sat 9:00pm: Partly Cloudy
Partly Cloudy
64°F
Dew Pt 48°F
Wind from SW SW 13 mph
Precip: 1%
Sat
10:00pm
Sat 10:00pm: Partly Cloudy
Partly Cloudy
63°F
Dew Pt 48°F
Wind from SW SW 13 mph
Precip: 3%
Sat
11:00pm
Sat 11:00pm: Partly Cloudy
Partly Cloudy
61°F
Dew Pt 47°F
Wind from SW SW 13 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 13 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 12 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 10 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 10 mph
Precip: 28%
Sun
4:00am
Sun 4:00am: Isolated Rain Showers
Isolated Rain Showers
61°F
Dew Pt 50°F
Wind from SW SW 9 mph
Precip: 20%
Sun
5:00am
Sun 5:00am: Partly Cloudy
Partly Cloudy
61°F
Dew Pt 50°F
Wind from SW SW 8 mph
Precip: 12%
Sun
6:00am
Sun 6:00am: Mostly Sunny
Mostly Sunny
61°F
Dew Pt 51°F
Wind from SW SW 9 mph
Precip: 8%
Sun
7:00am
Sun 7:00am: Mostly Sunny
Mostly Sunny
62°F
Dew Pt 52°F
Wind from W W 9 mph
Precip: 5%




Radar [‒] Radar [+]

Satellite [‒] Satellite [+]

Satellite images courtesy Weather Underground / Intellicast.

GOES East  

Tap Click image to go to NESDIS

Weather Underground Visible

Tap Click image to go to Weather Underground

Weather Underground Infrared

Tap Click image to go to Weather Underground

UV Forecast [‒] UV Forecast [+]

UV Index forecast from the Environmental Protection Agency

UV Index forecast high for today: 8    Very High 

Current (Estimated): 0   None

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:

0.02 in

Rain Today:

0.43 in

Thursday:

1.14 in

May:

8.64 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, 12 hours, 54 minutes, 1%

Phase:

Waning Crescent (1%)

Moon rise:

4:08am

Moon set:

7:02pm


Social Media - Mastodon [‒] Social Media - Mastodon [+]