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Lexington Weather

Lexington, Massachusetts, USA

49°F
3/21/2026 2:33pm 
  • Lexington Conditions: Mostly cloudy
  • Temperature: 48.6°F / 9.2°CColder 2.3°F than last hour.
  • Dew Point: 33.1°FDecreased 1.2°Fsince last hour.
  • Relative Humidity: 55%Increased 2.0% since last hour.
  • Wind: Wind from NNW NNW Calm, 10-min avg: 1 mph, gust: 6 mph
  • Barometer: 29.82 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   

Current Conditions [‒] Current Conditions [+]

48.6°F Colder than last hour.

9.2°C

 

 Chilly 

Mostly cloudy

Mostly cloudy

This Afternoon:  Hi 52 °F

Tonight:  Lo 34 °F

 

Dew Point:  33.1°F Decreased 1.2°F since last hour.

Humidity:  55% Increased 2.0% since last hour.

 

Air Quality Index: 30

 Good 

(Ozone)

Barometer:  29.82 in S

1010 mb

 

Rain Rate:  0.00 in/hr

Rain Today:  0.00 in

Rain Friday 0.07 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: 1 mph

Gusts: 6 mph

Wind from NNW


Expected Snow [‒] Expected Snow [+]

72-Hour Snowfall Forecast

Tap Click image to go to NWS winter weather page

For Lexington, 1" expected.

Forecast [‒] Forecast [+]

NWS Weather Forecast -
This Afternoon, Tonight, & Sunday through Friday Night

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sat Mar 21, 2026 1:00pm EDT


This Afternoon:

Mostly Sunny

Hi 52 °F

This Afternoon: Mostly Sunny

Mostly sunny, with a high near 52. Northwest wind around 12 mph.


Tonight:

Cloudy then Chance Light Snow

Lo 34 °F

Tonight: Cloudy then Chance Light Snow

A slight chance of rain between 4am and 5am, then a chance of snow. Cloudy, with a low around 34. Northeast wind 0 to 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.


Sunday:

Chance Light Snow then Light Rain

Hi 44 °F

Sunday: Chance Light Snow then Light Rain

A chance of snow before 8am, then rain. Cloudy, with a high near 44. Southeast wind 5 to 9 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.


Sunday Night:

Light Rain

Lo 33 °F

Sunday Night: Light Rain

Rain. Cloudy, with a low around 33. North wind 5 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.


Monday:

Chance Light Snow then Chance Snow Showers

Hi 40 °F

Monday: Chance Light Snow then Chance Snow Showers

A chance of snow before 8am, then a chance of snow showers between 8am and 2pm, then a slight chance of rain showers. Cloudy, with a high near 40. North wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New snow accumulation of less than half an inch possible.


Monday Night:

Chance Snow Showers

Lo 27 °F

Monday Night: Chance Snow Showers

A chance of snow showers before 2am. Mostly cloudy, with a low around 27. North wind around 8 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.


Tuesday:

Mostly Sunny

Hi 44 °F

Tuesday: Mostly Sunny

Mostly sunny, with a high near 44. West wind around 7 mph.


Tuesday Night:

Mostly Cloudy

Lo 32 °F

Tuesday Night: Mostly Cloudy

Mostly cloudy, with a low around 32. Southwest wind around 8 mph.


Wednesday:

Slight Chance Light Snow

Hi 50 °F

Wednesday: Slight Chance Light Snow

A slight chance of snow between 7am and 8am, then a slight chance of rain and snow. Partly sunny, with a high near 50. Southwest wind 8 to 12 mph, with gusts as high as 22 mph.


Wednesday Night:

Slight Chance Light Rain then Slight Chance Rain And Snow

Lo 31 °F

Wednesday Night: Slight Chance Light Rain then Slight Chance Rain And Snow

A slight chance of rain before 5am, then a slight chance of rain and snow. Mostly cloudy, with a low around 31. West wind around 9 mph.


Thursday:

Chance Rain And Snow

Hi 48 °F

Thursday: Chance Rain And Snow

A chance of rain and snow before 5pm, then a chance of rain and snow. Mostly cloudy, with a high near 48. South wind around 9 mph. Chance of precipitation is 30%.


Thursday Night:

Rain And Snow Likely

Lo 36 °F

Thursday Night: Rain And Snow Likely

Rain and snow likely. Mostly cloudy, with a low around 36. Southwest wind around 9 mph. Chance of precipitation is 60%.


Friday:

Chance Rain And Snow

Hi 47 °F

Friday: Chance Rain And Snow

Rain likely before 8am, then a chance of rain and snow. Partly sunny, with a high near 47. Northwest wind around 12 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.


Friday Night:

Slight Chance Rain And Snow then Partly Cloudy

Lo 24 °F

Friday Night: Slight Chance Rain And Snow then Partly Cloudy

A slight chance of rain and snow before 9pm. Partly cloudy, with a low around 24. Northwest wind around 10 mph. New snow accumulation of less than half an inch possible.


NWS Hourly Forecast -
Today 2pm through Mon 1am

Issued by:
National Weather Service Boston / Norton, MA
Updated Sat Mar 21, 2026 1:00pm EDT

 
2:00pm
Sat 2:00pm: Mostly Sunny
Mostly Sunny
51°F
Dew Pt 29°F
Wind from NW NW 12 mph
Precip: 0%
 
3:00pm
Sat 3:00pm: Mostly Sunny
Mostly Sunny
51°F
Dew Pt 28°F
Wind from NW NW 12 mph
Precip: 0%
 
4:00pm
Sat 4:00pm: Mostly Sunny
Mostly Sunny
51°F
Dew Pt 26°F
Wind from NW NW 12 mph
Precip: 0%
 
5:00pm
Sat 5:00pm: Mostly Sunny
Mostly Sunny
49°F
Dew Pt 25°F
Wind Chill: 45°F
Wind from N N 10 mph
Precip: 0%
 
6:00pm
Sat 6:00pm: Mostly Cloudy
Mostly Cloudy
47°F
Dew Pt 25°F
Wind Chill: 43°F
Wind from N N 8 mph
Precip: 0%
 
7:00pm
Sat 7:00pm: Mostly Cloudy
Mostly Cloudy
45°F
Dew Pt 26°F
Wind Chill: 42°F
Wind from N N 6 mph
Precip: 0%
 
8:00pm
Sat 8:00pm: Mostly Cloudy
Mostly Cloudy
42°F
Dew Pt 27°F
Wind from N N 2 mph
Precip: 0%
 
9:00pm
Sat 9:00pm: Cloudy
Cloudy
41°F
Dew Pt 27°F
Wind from N N 2 mph
Precip: 10%
 
10:00pm
Sat 10:00pm: Cloudy
Cloudy
40°F
Dew Pt 27°F
Wind from NE NE 1 mph
Precip: 10%
 
11:00pm
Sat 11:00pm: Cloudy
Cloudy
40°F
Dew Pt 28°F
Wind from 0 mph
Precip: 9%
Sun
12:00am
Sun 12:00am: Cloudy
Cloudy
39°F
Dew Pt 28°F
Wind from NE NE 1 mph
Precip: 8%
Sun
1:00am
Sun 1:00am: Cloudy
Cloudy
38°F
Dew Pt 28°F
Wind from E E 1 mph
Precip: 7%
Sun
2:00am
Sun 2:00am: Cloudy
Cloudy
37°F
Dew Pt 28°F
Wind from SE SE 1 mph
Precip: 6%
Sun
3:00am
Sun 3:00am: Cloudy
Cloudy
36°F
Dew Pt 29°F
Wind from SE SE 1 mph
Precip: 13%
Sun
4:00am
Sun 4:00am: Slight Chance Light Rain
Slight Chance Light Rain
35°F
Dew Pt 29°F
Wind from SE SE 2 mph
Precip: 21%
Sun
5:00am
Sun 5:00am: Chance Light Snow
Chance Light Snow
34°F
Dew Pt 29°F
Wind Chill: 31°F
Wind from SE SE 3 mph
Precip: 28%
Rain: 0.01 in
Sun
6:00am
Sun 6:00am: Chance Light Snow
Chance Light Snow
34°F
Dew Pt 30°F
Wind Chill: 30°F
Wind from SE SE 5 mph
Precip: 31%
Rain: 0.01 in
Sun
7:00am
Sun 7:00am: Chance Light Snow
Chance Light Snow
34°F
Dew Pt 31°F
Wind Chill: 29°F
Wind from SE SE 6 mph
Precip: 34%
Rain: 0.01 in
Sun
8:00am
Sun 8:00am: Chance Light Rain
Chance Light Rain
35°F
Dew Pt 32°F
Wind Chill: 28°F
Wind from SE SE 8 mph
Precip: 37%
Rain: 0.02 in
Sun
9:00am
Sun 9:00am: Chance Light Rain
Chance Light Rain
36°F
Dew Pt 33°F
Wind Chill: 30°F
Wind from SE SE 8 mph
Precip: 51%
Rain: 0.02 in
Sun
10:00am
Sun 10:00am: Light Rain Likely
Light Rain Likely
37°F
Dew Pt 34°F
Wind Chill: 30°F
Wind from S S 9 mph
Precip: 65%
Rain: 0.03 in
Sun
11:00am
Sun 11:00am: Light Rain
Light Rain
39°F
Dew Pt 34°F
Wind Chill: 33°F
Wind from S S 9 mph
Precip: 79%
Rain: 0.03 in
Sun
12:00pm
Sun 12:00pm: Light Rain
Light Rain
40°F
Dew Pt 35°F
Wind Chill: 35°F
Wind from S S 8 mph
Precip: 82%
Rain: 0.03 in
Sun
1:00pm
Sun 1:00pm: Light Rain
Light Rain
41°F
Dew Pt 37°F
Wind Chill: 37°F
Wind from SE SE 6 mph
Precip: 85%
Rain: 0.03 in
Sun
2:00pm
Sun 2:00pm: Light Rain
Light Rain
42°F
Dew Pt 38°F
Wind Chill: 39°F
Wind from SE SE 5 mph
Precip: 88%
Rain: 0.02 in
Sun
3:00pm
Sun 3:00pm: Light Rain
Light Rain
43°F
Dew Pt 38°F
Wind Chill: 40°F
Wind from E E 5 mph
Precip: 84%
Rain: 0.02 in
Sun
4:00pm
Sun 4:00pm: Light Rain
Light Rain
43°F
Dew Pt 38°F
Wind Chill: 40°F
Wind from N N 5 mph
Precip: 81%
Rain: 0.02 in
Sun
5:00pm
Sun 5:00pm: Light Rain
Light Rain
43°F
Dew Pt 38°F
Wind Chill: 40°F
Wind from NW NW 5 mph
Precip: 78%
Rain: 0.02 in
Sun
6:00pm
Sun 6:00pm: Light Rain
Light Rain
43°F
Dew Pt 38°F
Wind Chill: 40°F
Wind from N N 5 mph
Precip: 77%
Rain: 0.02 in
Sun
7:00pm
Sun 7:00pm: Light Rain
Light Rain
43°F
Dew Pt 37°F
Wind Chill: 39°F
Wind from N N 6 mph
Precip: 76%
Rain: 0.02 in
Sun
8:00pm
Sun 8:00pm: Light Rain
Light Rain
42°F
Dew Pt 37°F
Wind Chill: 38°F
Wind from N N 6 mph
Precip: 75%
Rain: 0.03 in
Sun
9:00pm
Sun 9:00pm: Light Rain
Light Rain
42°F
Dew Pt 36°F
Wind Chill: 38°F
Wind from N N 6 mph
Precip: 75%
Rain: 0.03 in
Sun
10:00pm
Sun 10:00pm: Light Rain
Light Rain
40°F
Dew Pt 35°F
Wind Chill: 36°F
Wind from N N 6 mph
Precip: 75%
Rain: 0.03 in
Sun
11:00pm
Sun 11:00pm: Light Rain
Light Rain
39°F
Dew Pt 34°F
Wind Chill: 35°F
Wind from N N 6 mph
Precip: 76%
Rain: 0.03 in
Mon
12:00am
Mon 12:00am: Light Rain Likely
Light Rain Likely
38°F
Dew Pt 33°F
Wind Chill: 33°F
Wind from N N 7 mph
Precip: 68%
Rain: 0.02 in
Mon
1:00am
Mon 1:00am: Light Rain Likely
Light Rain Likely
38°F
Dew Pt 33°F
Wind Chill: 33°F
Wind from N N 7 mph
Precip: 60%
Rain: 0.02 in




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: 4    Medium 

Current (Estimated): 3    Medium 

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:

0.07 in

Friday:

2.95 in

March:

4.66 in

2026

50.9 in

Season Snow:

4 snow days in March

Daily Extremes [‒] Daily Extremes [+]

12:42pm

51.8°F

High today:

4:18am

43.3°F

Low today:

1:40pm

57.6°F

High Friday:

6:46am

31.6°F

Low Friday:

12:03am

39.0°F

Low wind chill today:

3:36am

30.9°F

Low wind chill Friday:

9:47am

42.3°F

High dew pt today:

11:35pm

41.9°F

High dew pt Friday:

2:04pm

10 mph

Wind gust today:

6:00pm

23 mph

Wind gust Friday:


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

Sun / Moon [‒] Sun / Moon [+]

Sun

First Light:

6:18am

Sunrise:

6:46am

Sunset:

6:58pm

Twilight ends:

7:26pm

Daylight length:

12 hours 12 minutes

Waxing Crescent, Moon age: 2 days, 17 hours, 12 minutes, 10%

Phase:

Waxing Crescent (10%)

Moon rise:

7:44am

Moon set:

10:36pm


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