Lexington Weather

Lexington, Massachusetts, USA

78°F
9/9/2026 3:25pm 
  • Lexington Conditions: Partly cloudy
  • Temperature: 78.3°F / 25.7°CWarmer 0.8°F than last hour.
  • Dew Point: 63.7°FDecreased 1.6°Fsince last hour.
  • Relative Humidity: 61%Decreased 5.0% since last hour.
  • Wind: Calm, 10-min avg: Calm, gust: 4 mph
  • Barometer: 30.04 inFalling 0.04 inHg/hr Falling Slowly
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   

Extreme Heat Warning

Issued by the National Weather Service - San Diego, CA

    EXTREME HEAT WARNING  

Extreme Heat Warning issued September 9 at 2:58AM PDT until September 9 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... ...HEAT ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 8 PM PDT THURSDAY

Areas Affected: Santa Ana Mountains and Foothills

Urgency: Expected

Severity: Severe

Certainty: Likely

Alert Sent: Wednesday 2:58am PDT

Alert Effective: Wednesday 2:58am PDT

Alert Expires: Wednesday 3:30pm PDT (expect updated alert by this time)

Event Onset: Wednesday 2:58am PDT

Event Ends: Wednesday 8:00pm PDT

Issued by: NWS San Diego CA

Details: 
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... ...HEAT ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 8 PM PDT THURSDAY...

* WHAT...For the Extreme Heat Warning, dangerously hot conditions
with high temperatures in the 90s to near 100 with low temperatures
in the 70s expected. For the Heat Advisory, high temperatures in
the mid 80s to mid 90s expected.

* WHERE...Santa Ana Mountains and Foothills.

* WHEN...For the Extreme Heat Warning, until 8 PM PDT this evening.
For the Heat Advisory, from 8 PM this evening to 8 PM PDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.

* ADDITIONAL DETAILS...Areas of Major HeatRisk. Very warm overnight
temperatures will limit relief from the heat.

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

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.e5db6b8d9fc05dff1d95522368b5a7b8c0290140.004.1
Codes: CAZ057
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e5db6b8d9fc05dff1d95522368b5a7b8c0290140.004.1