Lexington Weather

Current Conditions [‒] Current Conditions [+]

83.7°F Warmer than last hour.

28.7°C

Feels like 87.4°F

Hot

Few Clouds

This Afternoon: Hi 87 °F

Tonight: Lo 67 °F

Dew Point: 69.3°F Decreased 1.4°F since last hour.

Humidity: 62% Decreased 4.0% since last hour.

Air Quality Index: 41

Good

(Fine Particles)

Barometer: 29.87 in S

1012 mb

Rain Rate: 0.00 in/hr

Rain Today: 0.00 in

Rain Friday: 0.00 in

Visibility: 10 miles

Wind:

Now: Calm

Avg: 1 mph

Gusts: 2 mph

OTHER PERSONAL WEATHER STATIONS

REGIONAL CONDITIONS

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

Issued by:
National Weather Service Boston / Norton, MA
Point Forecast Updated Sat Aug 1, 2026 2:41pm EDT

Overview:

- Mostly dry Saturday with a mix of clouds and sun, but there remains a chance for some widely scattered showers or t-storms.

- A cold front brings the return of heavy rain and gusty winds Sunday night and Monday, perhaps lingering into Tuesday.

- Periodic rain chances will be with us for much of next week.

This Afternoon:

Mostly Cloudy

Hi 87 °F

Mostly cloudy, with a high near 87. South wind around 6 mph.

Tonight:

Mostly Cloudy

Lo 67 °F

Mostly cloudy, with a low around 67. South wind around 6 mph.

Sunday:

Mostly Cloudy

Hi 85 °F

Mostly cloudy, with a high near 85. South wind 6 to 10 mph.

Sunday Night:

Slight Chance Showers And T-Storms

Lo 68 °F

Sunday Night: Slight Chance Showers And Thunderstorms

A slight chance of showers and thunderstorms between 11pm and 1am, then a chance of showers and thunderstorms between 1am and 2am, then patchy fog and showers and thunderstorms likely. Mostly cloudy, with a low around 68. South wind 3 to 9 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

Monday:

Showers And T-Storms

Hi 81 °F

Rain showers and patchy fog before 11am, then showers and thunderstorms. Mostly cloudy, with a high near 81. South wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

Monday Night:

Showers And T-Storms Likely

Lo 65 °F

Monday Night: Showers And Thunderstorms Likely

Showers and thunderstorms likely before 5am. Mostly cloudy, with a low around 65. Southwest wind 5 to 8 mph. Chance of precipitation is 70%.

Tuesday:

Mostly Sunny then Slight Chance Rain Showers

Hi 83 °F

A slight chance of rain showers after 2pm. Mostly sunny, with a high near 83. North wind around 6 mph.

Tuesday Night:

Slight Chance Rain Showers then Partly Cloudy

Lo 65 °F

A slight chance of rain showers before 8pm. Partly cloudy, with a low around 65. South wind around 5 mph.

Wednesday:

Chance Rain Showers

Hi 84 °F

A chance of rain showers after 7am. Mostly sunny, with a high near 84. Southwest wind 2 to 7 mph. Chance of precipitation is 30%.

Wednesday Night:

Chance Rain Showers

Lo 69 °F

A chance of rain showers before 2am. Mostly cloudy, with a low around 69. Southwest wind around 6 mph. Chance of precipitation is 30%.

Thursday:

Chance Rain Showers

Hi 86 °F

A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 86. Southwest wind 5 to 8 mph. Chance of precipitation is 50%.

Thursday Night:

Chance Showers And T-Storms then Partly Cloudy

Lo 71 °F

Thursday Night: Chance Showers And Thunderstorms then Partly Cloudy

A chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 71. Southwest wind around 7 mph. Chance of precipitation is 40%.

Friday:

Mostly Sunny then Slight Chance Showers And T-Storms

Hi 88 °F

Friday: Mostly Sunny then Slight Chance Showers And Thunderstorms

A slight chance of showers and thunderstorms between 2pm and 3pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 88. Southwest wind 5 to 8 mph. Chance of precipitation is 30%.

Friday Night:

Chance Showers And T-Storms then Partly Cloudy

Lo 69 °F

Friday Night: Chance Showers And Thunderstorms then Partly Cloudy

A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Southwest wind around 6 mph.

FULL FORECAST

NWS Hourly Forecast -
Today 3pm through Mon 2am

Issued by:
National Weather Service Boston / Norton, MA
Updated Sat Aug 1, 2026 2:41pm EDT

3:00pm

Partly Sunny

85°F
Dew Pt 67°F
Heat Index: 88°F
Wind from S

S 6 mph
Precip: 2%

4:00pm

Mostly Cloudy

86°F
Dew Pt 67°F
Heat Index: 89°F
Wind from S

S 6 mph
Precip: 2%

5:00pm

Mostly Cloudy

83°F
Dew Pt 67°F
Heat Index: 86°F
Wind from S

S 6 mph
Precip: 1%

6:00pm

Mostly Cloudy

82°F
Dew Pt 68°F
Heat Index: 85°F
Wind from S

S 6 mph
Precip: 1%

7:00pm

Mostly Cloudy

81°F
Dew Pt 68°F
Heat Index: 84°F
Wind from S

S 6 mph
Precip: 4%

8:00pm

Mostly Cloudy

77°F
Dew Pt 68°F
Wind from S

S 6 mph
Precip: 3%

9:00pm

Mostly Cloudy

76°F
Dew Pt 68°F
Wind from S

S 6 mph
Precip: 1%

10:00pm

Mostly Cloudy

74°F
Dew Pt 68°F
Wind from S

S 6 mph
Precip: 1%

11:00pm

Mostly Cloudy

73°F
Dew Pt 68°F
Wind from S

S 6 mph
Precip: 1%

Sun
12:00am

Mostly Cloudy

72°F
Dew Pt 68°F
Wind from SW

SW 6 mph
Precip: 2%

Sun
1:00am

Mostly Cloudy

71°F
Dew Pt 68°F
Wind from S

S 6 mph
Precip: 2%

Sun
2:00am

Mostly Cloudy

71°F
Dew Pt 67°F
Wind from SW

SW 6 mph
Precip: 1%

Sun
3:00am

Mostly Cloudy

69°F
Dew Pt 67°F
Wind from SW

SW 6 mph
Precip: 2%

Sun
4:00am

Mostly Cloudy

69°F
Dew Pt 67°F
Wind from S

S 6 mph
Precip: 2%

Sun
5:00am

Mostly Cloudy

69°F
Dew Pt 67°F
Wind from S

S 6 mph
Precip: 2%

Sun
6:00am

Mostly Cloudy

68°F
Dew Pt 68°F
Wind from S

S 6 mph
Precip: 2%

Sun
7:00am

Cloudy

69°F
Dew Pt 68°F
Wind from S

S 6 mph
Precip: 2%

Sun
8:00am

Cloudy

71°F
Dew Pt 69°F
Wind from S

S 7 mph
Precip: 2%

Sun
9:00am

Mostly Cloudy

74°F
Dew Pt 70°F
Wind from S

S 7 mph
Precip: 2%

Sun
10:00am

Mostly Cloudy

78°F
Dew Pt 70°F
Wind from S

S 8 mph
Precip: 2%

Sun
11:00am

Mostly Cloudy

80°F
Dew Pt 70°F
Heat Index: 83°F
Wind from S

S 8 mph
Precip: 3%

Sun
12:00pm

Mostly Cloudy

82°F
Dew Pt 70°F
Heat Index: 86°F
Wind from S

S 8 mph
Precip: 4%

Sun
1:00pm

Mostly Cloudy

83°F
Dew Pt 69°F
Heat Index: 87°F
Wind from S

S 9 mph
Precip: 5%

Sun
2:00pm

Partly Sunny

83°F
Dew Pt 69°F
Heat Index: 87°F
Wind from S

S 9 mph
Precip: 6%

Sun
3:00pm

Partly Sunny

84°F
Dew Pt 69°F
Heat Index: 88°F
Wind from S

S 10 mph
Precip: 4%

Sun
4:00pm

Partly Sunny

84°F
Dew Pt 68°F
Heat Index: 87°F
Wind from S

S 10 mph
Precip: 2%

Sun
5:00pm

Mostly Cloudy

83°F
Dew Pt 68°F
Heat Index: 86°F
Wind from S

S 10 mph
Precip: 1%

Sun
6:00pm

Mostly Cloudy

82°F
Dew Pt 68°F
Heat Index: 85°F
Wind from S

S 9 mph
Precip: 4%

Sun
7:00pm

Mostly Cloudy

80°F
Dew Pt 68°F
Heat Index: 83°F
Wind from S

S 9 mph
Precip: 7%

Sun
8:00pm

Mostly Cloudy

77°F
Dew Pt 68°F
Wind from S

S 7 mph
Precip: 10%

Sun
9:00pm

Mostly Cloudy

75°F
Dew Pt 68°F
Wind from S

S 7 mph
Precip: 16%

Sun
10:00pm

Mostly Cloudy

74°F
Dew Pt 69°F
Wind from S

S 6 mph
Precip: 22%

Sun
11:00pm

Slight Chance Showers And Thunderstorms

73°F
Dew Pt 69°F
Wind from S

S 5 mph
Precip: 27%

Mon
12:00am

Slight Chance Showers And Thunderstorms

72°F
Dew Pt 70°F
Wind from S

S 5 mph
Precip: 37%

Mon
1:00am

Chance Showers And Thunderstorms

72°F
Dew Pt 70°F
Wind from SE

SE 3 mph
Precip: 46%
Rain: 0.01 in

Mon
2:00am

Patchy Fog

70°F
Dew Pt 70°F
Wind from SE

SE 5 mph
Precip: 56%
Rain: 0.01 in

VIEW ON NWS WEB SITE

FORECAST DISCUSSION

Area Forecast Discussion
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Satellite [‒] Satellite [+]

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UV Forecast [‒] UV Forecast [+]

UV Index forecast from the Environmental Protection Agency

UV Index forecast high for today: 8 Very High

Current (Estimated): 4 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:

0.00 in

Friday:

0.00 in

August:

17.66 in

2026

Daily Extremes [‒] Daily Extremes [+]

1:31pm

86.7°F

High today:

6:19am

66.0°F

Low today:

1:41pm

79.3°F

High Friday:

5:42am

62.8°F

Low Friday:

1:20pm

71.6°F

High dew pt today:

12:23pm

69.1°F

High dew pt Friday:

1:31pm

91.7°F

High heat index today:

12:49pm

6 mph

Wind gust today:

3:45pm

9 mph

Wind gust Friday:

MORE EXTREMES

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

No alerts/warnings active for Southeast Middlesex County.

Sun / Moon [‒] Sun / Moon [+]

First Light:

5:06am

Sunrise:

5:38am

Sunset:

8:05pm

Twilight ends:

8:37pm

Daylight length:

14 hours 27 minutes

Waning Gibbous, Moon age: 18 days, 9 hours, 53 minutes, 90%

Phase:

Waning Gibbous (90%)

Moon set:

8:37am

Moon rise:

9:31pm

Current Conditions [‒] Current Conditions [+]

Forecast [‒] Forecast [+]

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

Overview:

This Afternoon:

Tonight:

Sunday:

Sunday Night:

Monday:

Monday Night:

Tuesday:

Tuesday Night:

Wednesday:

Wednesday Night:

Thursday:

Thursday Night:

Friday:

Friday Night:

NWS Hourly Forecast - Today 3pm through Mon 2am

Area Forecast Discussion for Boston / Norton, MA

Radar [‒] Radar [+]

Satellite [‒] Satellite [+]

UV Forecast [‒] UV Forecast [+]

UV Index forecast from the Environmental Protection Agency

Precipitation [‒] Precipitation [+]

Daily Extremes [‒] Daily Extremes [+]

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

Sun / Moon [‒] Sun / Moon [+]

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

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

NWS Hourly Forecast -
Today 3pm through Mon 2am

Area Forecast Discussion
for Boston / Norton, MA