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Lexington Weather

Lexington, Massachusetts, USA

79°F
6/22/2025 10:27pm 
  • Lexington Conditions: Clear
  • Temperature: 79.2°F / 26.2°CColder 1.8°F than last hour.
  • Dew Point: 71.8°FIncreased 0.4°Fsince last hour.
  • Relative Humidity: 78%Increased 5.0% since last hour.
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 29.93 inRising 0.02  inHg/hr Rising Slowly
  • Visibility: 10 miles
  • Rain Today: 0.05 in
  •   
Southeast Middlesex County, MA - Extreme Heat Warning
 - SEE ALL NEARBY ALERTS -

Current Conditions [‒] Current Conditions [+]

79.2°F Colder than last hour.

26.2°C

 

 Very Muggy 

Clear

Clear

Tonight:  Lo 70 °F

Monday:  Hi 91 °F

 

Dew Point:  71.8°F Increased 0.4°F since last hour .

Humidity:  78% Increased 5.0% since last hour.

Barometer:  29.93 in Rising 0.02  inHg/hr

1014 mb

 

Rain Rate:  0.00 in/hr

Rain Today:  0.05 in

Rain Saturday 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: Calm

Gusts: 0 mph

Calm wind


Forecast [‒] Forecast [+]

NWS Weather Forecast -
Tonight, Monday, & Monday Night through Sunday

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sun Jun 22, 2025 6:51pm EDT


Overview:

Dangerous heat and humidity through early next week peaks on Tuesday. The heat begins to ease on Wednesday then turning cooler for the end of the week into next weekend with daily chances of showers and possibly a few thunderstorms.



Tonight:

Partly Cloudy then Patchy Fog

Lo 70 °F

Tonight: Partly Cloudy then Patchy Fog

Patchy fog between 4am and 5am. Partly cloudy, with a low around 70. Heat index values as high as 95. Northwest wind 2 to 9 mph.


Monday:

Patchy Fog then Mostly Sunny

Hi 91 °F

Monday: Patchy Fog then Mostly Sunny

Patchy fog before 7am. Mostly sunny, with a high near 91. East wind 1 to 7 mph.


Monday Night:

Mostly Clear

Lo 74 °F

Monday Night: Mostly Clear

Mostly clear, with a low around 74. South wind around 7 mph.


Tuesday:

Sunny

Hi 100 °F

Tuesday: Sunny

Sunny, with a high near 100. Heat index values as high as 108. West wind 6 to 9 mph.


Tuesday Night:

Mostly Clear

Lo 77 °F

Tuesday Night: Mostly Clear

Mostly clear, with a low around 77. Northwest wind around 8 mph.


Wednesday:

Mostly Sunny

Hi 89 °F

Wednesday: Mostly Sunny

Mostly sunny, with a high near 89. Northeast wind around 7 mph.


Wednesday Night:

Partly Cloudy then Slight Chance Rain Showers

Lo 65 °F

Wednesday Night: Partly Cloudy then Slight Chance Rain Showers

A slight chance of rain showers after 1am. Partly cloudy, with a low around 65. East wind around 6 mph.


Thursday:

Chance Rain Showers

Hi 76 °F

Thursday: Chance Rain Showers

A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 76. East wind 5 to 8 mph. Chance of precipitation is 40%.


Thursday Night:

Chance Rain Showers

Lo 60 °F

Thursday Night: Chance Rain Showers

A chance of rain showers. Mostly cloudy, with a low around 60. Northeast wind around 7 mph. Chance of precipitation is 40%.


Friday:

Chance Rain Showers

Hi 71 °F

Friday: Chance Rain Showers

A chance of rain showers. Mostly cloudy, with a high near 71. East wind 5 to 8 mph. Chance of precipitation is 50%.


Friday Night:

Rain Showers Likely

Lo 60 °F

Friday Night: Rain Showers Likely

Rain showers likely. Mostly cloudy, with a low around 60. East wind around 7 mph. Chance of precipitation is 60%.


Saturday:

Rain Showers Likely

Hi 72 °F

Saturday: Rain Showers Likely

Rain showers likely. Mostly cloudy, with a high near 72. East wind around 8 mph. Chance of precipitation is 60%.


Saturday Night:

Chance Rain Showers

Lo 62 °F

Saturday Night: Chance Rain Showers

A chance of rain showers before 5am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Northeast wind 5 to 8 mph. Chance of precipitation is 40%.


Sunday:

Chance Showers And T-Storms

Hi 78 °F

Sunday: Chance Showers And Thunderstorms

A chance of showers and thunderstorms. Partly sunny, with a high near 78. Northwest wind 5 to 8 mph.


NWS Hourly Forecast -
Tonight 10pm through Tue 9am

Issued by:
National Weather Service Boston / Norton, MA
Updated Sun Jun 22, 2025 6:51pm EDT

 
10:00pm
Sun 10:00pm: Partly Cloudy
Partly Cloudy
80°F
Dew Pt 72°F
Heat Index: 84°F
Wind from NW NW 6 mph
Precip: 1%
 
11:00pm
Sun 11:00pm: Partly Cloudy
Partly Cloudy
78°F
Dew Pt 71°F
Wind from NW NW 6 mph
Precip: 0%
Mon
12:00am
Mon 12:00am: Mostly Cloudy
Mostly Cloudy
76°F
Dew Pt 70°F
Wind from NW NW 6 mph
Precip: 0%
Mon
1:00am
Mon 1:00am: Partly Cloudy
Partly Cloudy
75°F
Dew Pt 69°F
Wind from N N 5 mph
Precip: 0%
Mon
2:00am
Mon 2:00am: Partly Cloudy
Partly Cloudy
73°F
Dew Pt 69°F
Wind from NW NW 5 mph
Precip: 0%
Mon
3:00am
Mon 3:00am: Mostly Clear
Mostly Clear
72°F
Dew Pt 68°F
Wind from NW NW 3 mph
Precip: 0%
Mon
4:00am
Mon 4:00am: Patchy Fog
Patchy Fog
70°F
Dew Pt 68°F
Wind from NW NW 3 mph
Precip: 0%
Mon
5:00am
Mon 5:00am: Partly Cloudy
Partly Cloudy
70°F
Dew Pt 67°F
Wind from NW NW 2 mph
Precip: 0%
Mon
6:00am
Mon 6:00am: Patchy Fog
Patchy Fog
71°F
Dew Pt 68°F
Wind from NW NW 3 mph
Precip: 0%
Mon
7:00am
Mon 7:00am: Mostly Sunny
Mostly Sunny
73°F
Dew Pt 68°F
Wind from N N 2 mph
Precip: 0%
Mon
8:00am
Mon 8:00am: Mostly Sunny
Mostly Sunny
76°F
Dew Pt 68°F
Wind from NE NE 3 mph
Precip: 0%
Mon
9:00am
Mon 9:00am: Mostly Sunny
Mostly Sunny
78°F
Dew Pt 67°F
Wind from NE NE 2 mph
Precip: 0%
Mon
10:00am
Mon 10:00am: Mostly Sunny
Mostly Sunny
82°F
Dew Pt 67°F
Heat Index: 85°F
Wind from NE NE 1 mph
Precip: 1%
Mon
11:00am
Mon 11:00am: Mostly Sunny
Mostly Sunny
84°F
Dew Pt 67°F
Heat Index: 87°F
Wind from S S 1 mph
Precip: 1%
Mon
12:00pm
Mon 12:00pm: Sunny
Sunny
87°F
Dew Pt 67°F
Heat Index: 90°F
Wind from S S 2 mph
Precip: 1%
Mon
1:00pm
Mon 1:00pm: Sunny
Sunny
89°F
Dew Pt 67°F
Heat Index: 92°F
Wind from SE SE 5 mph
Precip: 1%
Mon
2:00pm
Mon 2:00pm: Sunny
Sunny
90°F
Dew Pt 67°F
Heat Index: 93°F
Wind from SE SE 6 mph
Precip: 2%
Mon
3:00pm
Mon 3:00pm: Sunny
Sunny
90°F
Dew Pt 67°F
Heat Index: 93°F
Wind from SE SE 6 mph
Precip: 2%
Mon
4:00pm
Mon 4:00pm: Sunny
Sunny
90°F
Dew Pt 66°F
Heat Index: 93°F
Wind from SE SE 6 mph
Precip: 3%
Mon
5:00pm
Mon 5:00pm: Sunny
Sunny
89°F
Dew Pt 66°F
Heat Index: 92°F
Wind from SE SE 7 mph
Precip: 4%
Mon
6:00pm
Mon 6:00pm: Mostly Clear
Mostly Clear
87°F
Dew Pt 66°F
Heat Index: 89°F
Wind from SE SE 7 mph
Precip: 4%
Mon
7:00pm
Mon 7:00pm: Mostly Clear
Mostly Clear
86°F
Dew Pt 67°F
Heat Index: 89°F
Wind from SE SE 7 mph
Precip: 3%
Mon
8:00pm
Mon 8:00pm: Mostly Clear
Mostly Clear
84°F
Dew Pt 68°F
Heat Index: 87°F
Wind from S S 6 mph
Precip: 3%
Mon
9:00pm
Mon 9:00pm: Mostly Clear
Mostly Clear
82°F
Dew Pt 69°F
Heat Index: 85°F
Wind from S S 6 mph
Precip: 3%
Mon
10:00pm
Mon 10:00pm: Mostly Clear
Mostly Clear
80°F
Dew Pt 69°F
Heat Index: 83°F
Wind from S S 7 mph
Precip: 2%
Mon
11:00pm
Mon 11:00pm: Mostly Clear
Mostly Clear
78°F
Dew Pt 70°F
Wind from SW SW 7 mph
Precip: 1%
Tue
12:00am
Tue 12:00am: Mostly Clear
Mostly Clear
77°F
Dew Pt 70°F
Wind from SW SW 7 mph
Precip: 1%
Tue
1:00am
Tue 1:00am: Mostly Clear
Mostly Clear
77°F
Dew Pt 70°F
Wind from SW SW 7 mph
Precip: 1%
Tue
2:00am
Tue 2:00am: Mostly Clear
Mostly Clear
76°F
Dew Pt 70°F
Wind from SW SW 7 mph
Precip: 1%
Tue
3:00am
Tue 3:00am: Mostly Clear
Mostly Clear
75°F
Dew Pt 70°F
Wind from SW SW 7 mph
Precip: 1%
Tue
4:00am
Tue 4:00am: Mostly Clear
Mostly Clear
74°F
Dew Pt 70°F
Wind from SW SW 6 mph
Precip: 0%
Tue
5:00am
Tue 5:00am: Mostly Clear
Mostly Clear
74°F
Dew Pt 70°F
Wind from SW SW 6 mph
Precip: 0%
Tue
6:00am
Tue 6:00am: Sunny
Sunny
76°F
Dew Pt 71°F
Wind from W W 6 mph
Precip: 0%
Tue
7:00am
Tue 7:00am: Sunny
Sunny
79°F
Dew Pt 72°F
Wind from W W 7 mph
Precip: 0%
Tue
8:00am
Tue 8:00am: Sunny
Sunny
83°F
Dew Pt 72°F
Heat Index: 88°F
Wind from W W 7 mph
Precip: 0%
Tue
9:00am
Tue 9:00am: Sunny
Sunny
86°F
Dew Pt 72°F
Heat Index: 92°F
Wind from W W 7 mph
Precip: 0%




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: 9    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:

0.05 in

Rain Today:

0.00 in

Saturday:

3.89 in

June:

22.87 in

2025

Daily Extremes [‒] Daily Extremes [+]

2:21pm

90.1°F

High today:

7:57am

70.2°F

Low today:

3:47pm

82.9°F

High Saturday:

5:51am

61.3°F

Low Saturday:

4:56pm

75.2°F

High dew pt today:

11:34pm

65.3°F

High dew pt Saturday:

2:14pm

100.2°F

High heat index today:

5:07pm

83.7°F

High heat index Saturday:

12:42pm

14 mph

Wind gust today:

3:36pm

3 mph

Wind gust Saturday:


Sun / Moon [‒] Sun / Moon [+]

Sun

First Light:

4:33am

Sunrise:

5:08am

Sunset:

8:26pm

Twilight ends:

9:01pm

Daylight length:

15 hours 18 minutes

Waning Crescent, Moon age: 26 days, 23 hours, 27 minutes, 8%

Phase:

Waning Crescent (8%)

Moon rise:

2:15am

Moon set:

5:47pm


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