Lexington Weather

Lexington, Massachusetts, USA

80°F

7/12/2026 3:56pm

Lexington Conditions: Partly cloudy
Temperature: 79.5°F / 26.4°C
Dew Point: 58.6°F
Relative Humidity: 49%
Wind: Calm, 10-min avg: Calm, gust: None
Barometer: 30.11 in Steady
Visibility: 10 miles
Rain Today: 0.00 in

Watches, Warnings, and Advisories

Issued by the National Weather Service - Los Angeles, CA

HEAT ADVISORY

Eastern San Gabriel Mountains, CA

Heat Advisory issued July 12 at 1:46AM PDT until July 14 at 10:00AM PDT by NWS Los Angeles/Oxnard CA

HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT TUESDAY... ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH THURSDAY EVENING

Areas Affected: Cuyama Valley; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains

Urgency: Expected

Severity: Moderate

Certainty: Likely

Alert Sent: Sunday 1:46am PDT

Alert Effective: Sunday 1:46am PDT

Alert Expires: Sunday 10:15pm PDT (expect updated alert by this time)

Event Onset: Sunday 1:46am PDT

Event Ends: Tuesday 10:00am PDT

Issued by: NWS Los Angeles/Oxnard CA

Details:

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT TUESDAY... ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH THURSDAY EVENING...

* WHAT...For the Heat Advisory, temperatures of 85 to 98. For the
Extreme Heat Watch, dangerously hot conditions with temperatures
up to 105 possible.

* WHERE...Cuyama Valley, Eastern San Gabriel Mountains, Interstate 5
Corridor, San Luis Obispo County Interior Valleys, San Luis Obispo
County Mountains, Santa Barbara County Interior Mountains,
Southern Salinas Valley, Southern Ventura County Mountains, and
Western San Gabriel Mountains and Highway 14 Corridor.

* WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the
Extreme Heat Watch, from Tuesday morning through Thursday evening.

* IMPACTS...There is a high risk for dangerous heat illness for
anyone, especially for the very young, the very old, those without
air conditioning, and those active outdoors. There is a high risk
for heat illness for sensitive populations including the very
young, the very old, those without air conditioning, and those
active outdoors.

* ADDITIONAL DETAILS...Monsoonal moisture will add to the discomfort
level from the heat starting on Sunday. continuing through the
week.

Information:

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Monitor the latest forecasts and warnings for updates.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

Meta data:

ID: urn:oid:2.49.0.1.840.0.57f4e361b32fe1f46d2f573f0a356aa75c0c8379.001.1
Codes: CAZ038, CAZ343, CAZ344, CAZ345, CAZ353, CAZ376, CAZ378, CAZ379, CAZ380
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.57f4e361b32fe1f46d2f573f0a356aa75c0c8379.001.1

EXTREME HEAT WATCH

Eastern San Gabriel Mountains, CA

Extreme Heat Watch issued July 12 at 1:46AM PDT until July 16 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT TUESDAY... ...EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH THURSDAY EVENING

Urgency: Future

Severity: Severe