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Lexington Weather

Lexington, Massachusetts, USA

57°F
9/19/2026 3:55am 
  • Lexington Conditions: Clear
  • Temperature: 57.0°F / 13.9°CColder 0.9°F than last hour.
  • Dew Point: 46.2°FDecreased 1.3°Fsince last hour.
  • Relative Humidity: 67%Decreased 1.0% since last hour.
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 30.10 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   

Current Conditions [‒] Current Conditions [+]

57.0°F Colder than last hour.

13.9°C

 

 Cool 

Clear

Clear

Overnight:  Lo 46 °F

Saturday:  Hi 66 °F

 

Dew Point:  46.2°F Decreased 1.3°F since last hour.

Humidity:  67% Decreased 1.0% since last hour.

 

Air Quality Index: 26

 Good 

(Ozone)

Barometer:  30.10 in S

1019 mb

 

Rain Rate:  0.00 in/hr

Rain Today:  0.00 in

Rain Friday 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

Calm wind


Forecast [‒] Forecast [+]

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

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sat Sep 19, 2026 2:36am EDT


Overview:

- Dry with fall-like weather tonight through Sat night. Lows both nights mainly in the 40s-lower 50s. Highs Sat mainly in the 60s perhaps flirting with 70 in the lower CT River Valley.

- Next chance for rain Sunday into Monday. There remains uncertainty in the details such as coverage, timing, and amounts. Showers may linger through early next week. A coastal low pressure is possible late next week.


Overnight:

Partly Cloudy

Lo 46 °F

Overnight: Partly Cloudy

Partly cloudy, with a low around 46. North wind around 5 mph.


Saturday:

Mostly Sunny

Hi 66 °F

Saturday: Mostly Sunny

Mostly sunny, with a high near 66. Northeast wind around 5 mph.


Saturday Night:

Partly Cloudy

Lo 47 °F

Saturday Night: Partly Cloudy

Partly cloudy, with a low around 47. South wind 1 to 5 mph.


Sunday:

Mostly Cloudy then Rain Showers

Hi 63 °F

Sunday: Mostly Cloudy then Rain Showers

Rain showers between 1pm and 4pm, then rain showers and patchy fog. Mostly cloudy, with a high near 63. Southeast wind 2 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.


Sunday Night:

Rain Showers

Lo 51 °F

Sunday Night: Rain Showers

Rain showers before 7pm, then rain showers and patchy fog. Cloudy, with a low around 51. Northeast wind 5 to 8 mph. Chance of precipitation is 80%.


Monday:

Partly Sunny

Hi 65 °F

Monday: Partly Sunny

Partly sunny, with a high near 65. Northeast wind 6 to 9 mph.


Monday Night:

Mostly Cloudy

Lo 48 °F

Monday Night: Mostly Cloudy

Mostly cloudy, with a low around 48. Northeast wind 2 to 7 mph.


Tuesday:

Partly Sunny

Hi 61 °F

Tuesday: Partly Sunny

Partly sunny, with a high near 61. Northeast wind around 9 mph.


Tuesday Night:

Mostly Cloudy

Lo 47 °F

Tuesday Night: Mostly Cloudy

Mostly cloudy, with a low around 47. Northeast wind 5 to 8 mph.


Wednesday:

Partly Sunny

Hi 62 °F

Wednesday: Partly Sunny

Partly sunny, with a high near 62. Northeast wind 8 to 14 mph, with gusts as high as 29 mph.


Wednesday Night:

Mostly Cloudy then Slight Chance Rain Showers

Lo 47 °F

Wednesday Night: Mostly Cloudy then Slight Chance Rain Showers

A slight chance of rain showers after 4am. Mostly cloudy, with a low around 47. Northeast wind 6 to 10 mph.


Thursday:

Chance Rain Showers

Hi 61 °F

Thursday: Chance Rain Showers

A chance of rain showers. Mostly cloudy, with a high near 61. Northeast wind 9 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.


Thursday Night:

Chance Rain Showers

Lo 48 °F

Thursday Night: Chance Rain Showers

A chance of rain showers. Mostly cloudy, with a low around 48. Northeast wind 10 to 14 mph. Chance of precipitation is 40%.


Friday:

Chance Rain Showers

Hi 62 °F

Friday: Chance Rain Showers

A chance of rain showers. Partly sunny, with a high near 62. North wind around 14 mph, with gusts as high as 30 mph.


NWS Hourly Forecast -
Today 3am through Sun 2pm

Issued by:
National Weather Service Boston / Norton, MA
Updated Sat Sep 19, 2026 2:36am EDT

 
3:00am
Sat 3:00am: Partly Cloudy
Partly Cloudy
51°F
Dew Pt 43°F
Wind from N N 5 mph
Precip: 0%
 
4:00am
Sat 4:00am: Partly Cloudy
Partly Cloudy
50°F
Dew Pt 43°F
Wind Chill: 48°F
Wind from N N 5 mph
Precip: 0%
 
5:00am
Sat 5:00am: Partly Cloudy
Partly Cloudy
48°F
Dew Pt 42°F
Wind Chill: 46°F
Wind from N N 5 mph
Precip: 0%
 
6:00am
Sat 6:00am: Sunny
Sunny
46°F
Dew Pt 42°F
Wind Chill: 44°F
Wind from N N 5 mph
Precip: 0%
 
7:00am
Sat 7:00am: Sunny
Sunny
46°F
Dew Pt 41°F
Wind Chill: 44°F
Wind from N N 5 mph
Precip: 0%
 
8:00am
Sat 8:00am: Sunny
Sunny
49°F
Dew Pt 42°F
Wind Chill: 47°F
Wind from N N 5 mph
Precip: 0%
 
9:00am
Sat 9:00am: Sunny
Sunny
52°F
Dew Pt 42°F
Wind from N N 5 mph
Precip: 0%
 
10:00am
Sat 10:00am: Sunny
Sunny
56°F
Dew Pt 42°F
Wind from NE NE 5 mph
Precip: 0%
 
11:00am
Sat 11:00am: Sunny
Sunny
60°F
Dew Pt 41°F
Wind from NE NE 5 mph
Precip: 0%
 
12:00pm
Sat 12:00pm: Mostly Sunny
Mostly Sunny
61°F
Dew Pt 41°F
Wind from NE NE 5 mph
Precip: 0%
 
1:00pm
Sat 1:00pm: Mostly Sunny
Mostly Sunny
64°F
Dew Pt 41°F
Wind from NE NE 3 mph
Precip: 0%
 
2:00pm
Sat 2:00pm: Mostly Sunny
Mostly Sunny
65°F
Dew Pt 41°F
Wind from E E 3 mph
Precip: 0%
 
3:00pm
Sat 3:00pm: Mostly Sunny
Mostly Sunny
65°F
Dew Pt 42°F
Wind from E E 3 mph
Precip: 0%
 
4:00pm
Sat 4:00pm: Mostly Sunny
Mostly Sunny
64°F
Dew Pt 43°F
Wind from SE SE 5 mph
Precip: 0%
 
5:00pm
Sat 5:00pm: Sunny
Sunny
63°F
Dew Pt 43°F
Wind from SE SE 5 mph
Precip: 0%
 
6:00pm
Sat 6:00pm: Mostly Clear
Mostly Clear
61°F
Dew Pt 44°F
Wind from SE SE 5 mph
Precip: 0%
 
7:00pm
Sat 7:00pm: Mostly Clear
Mostly Clear
58°F
Dew Pt 44°F
Wind from SE SE 5 mph
Precip: 0%
 
8:00pm
Sat 8:00pm: Mostly Clear
Mostly Clear
55°F
Dew Pt 44°F
Wind from SE SE 5 mph
Precip: 0%
 
9:00pm
Sat 9:00pm: Partly Cloudy
Partly Cloudy
53°F
Dew Pt 44°F
Wind from SE SE 3 mph
Precip: 0%
 
10:00pm
Sat 10:00pm: Partly Cloudy
Partly Cloudy
52°F
Dew Pt 44°F
Wind from S S 3 mph
Precip: 0%
 
11:00pm
Sat 11:00pm: Partly Cloudy
Partly Cloudy
51°F
Dew Pt 44°F
Wind from S S 3 mph
Precip: 0%
Sun
12:00am
Sun 12:00am: Partly Cloudy
Partly Cloudy
50°F
Dew Pt 44°F
Wind from S S 2 mph
Precip: 0%
Sun
1:00am
Sun 1:00am: Partly Cloudy
Partly Cloudy
49°F
Dew Pt 44°F
Wind from S S 2 mph
Precip: 0%
Sun
2:00am
Sun 2:00am: Mostly Cloudy
Mostly Cloudy
49°F
Dew Pt 44°F
Wind from S S 2 mph
Precip: 0%
Sun
3:00am
Sun 3:00am: Partly Cloudy
Partly Cloudy
49°F
Dew Pt 44°F
Wind from SW SW 2 mph
Precip: 0%
Sun
4:00am
Sun 4:00am: Mostly Cloudy
Mostly Cloudy
49°F
Dew Pt 44°F
Wind from S S 1 mph
Precip: 0%
Sun
5:00am
Sun 5:00am: Partly Cloudy
Partly Cloudy
49°F
Dew Pt 44°F
Wind from S S 1 mph
Precip: 0%
Sun
6:00am
Sun 6:00am: Partly Sunny
Partly Sunny
49°F
Dew Pt 45°F
Wind from SE SE 2 mph
Precip: 0%
Sun
7:00am
Sun 7:00am: Mostly Cloudy
Mostly Cloudy
50°F
Dew Pt 46°F
Wind from SE SE 2 mph
Precip: 0%
Sun
8:00am
Sun 8:00am: Mostly Cloudy
Mostly Cloudy
51°F
Dew Pt 47°F
Wind from SE SE 3 mph
Precip: 5%
Sun
9:00am
Sun 9:00am: Mostly Cloudy
Mostly Cloudy
54°F
Dew Pt 48°F
Wind from SE SE 3 mph
Precip: 6%
Sun
10:00am
Sun 10:00am: Mostly Cloudy
Mostly Cloudy
57°F
Dew Pt 49°F
Wind from SE SE 5 mph
Precip: 6%
Sun
11:00am
Sun 11:00am: Mostly Cloudy
Mostly Cloudy
60°F
Dew Pt 50°F
Wind from SE SE 6 mph
Precip: 7%
Sun
12:00pm
Sun 12:00pm: Mostly Cloudy
Mostly Cloudy
61°F
Dew Pt 51°F
Wind from SE SE 6 mph
Precip: 28%
Sun
1:00pm
Sun 1:00pm: Slight Chance Rain Showers
Slight Chance Rain Showers
61°F
Dew Pt 52°F
Wind from SE SE 6 mph
Precip: 49%
Sun
2:00pm
Sun 2:00pm: Rain Showers Likely
Rain Showers Likely
60°F
Dew Pt 53°F
Wind from SE SE 6 mph
Precip: 70%
Rain: 0.04 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: 6    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:

0.00 in

Rain Today:

0.00 in

Friday:

1.98 in

September:

21.88 in

2026

Daily Extremes [‒] Daily Extremes [+]

12:00am

61.7°F

High today:

3:51am

57.0°F

Low today:

1:41pm

79.5°F

High Friday:

11:59pm

61.5°F

Low Friday:

12:04am

48.7°F

High dew pt today:

12:10am

67.6°F

High dew pt Friday:

12:18am

2 mph

Wind gust today:

12:02am

10 mph

Wind gust Friday:


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

Sun / Moon [‒] Sun / Moon [+]

Sun

First Light:

6:01am

Sunrise:

6:29am

Sunset:

6:48pm

Twilight ends:

7:16pm

Daylight length:

12 hours 19 minutes

First Quarter, Moon age: 8 days, 4 hours, 30 minutes, 54%

Phase:

First Quarter (54%)

Moon rise:

3:16pm

Moon set:

11:49pm


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