Lexington Weather

Lexington, Massachusetts, USA

68°F
8/24/2026 2:32am 
  • Lexington Conditions: Mist, Overcast
  • Temperature: 67.6°F / 19.8°CColder 0.2°F than last hour.
  • Dew Point: 66.4°FDecreased 0.2°Fsince last hour.
  • Relative Humidity: 96% 
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 29.79 inFalling 0.02 inHg/hr Falling Slowly
  • Visibility: 2 miles
  • Rain Today: 0.00 in
  •   

Extreme Heat Warning

Issued by the National Weather Service - NWS Tucson Arizona

    EXTREME HEAT WARNING  

Extreme Heat Warning issued August 23 at 11:45AM MST until August 29 at 8:00PM MST by NWS Tucson AZ

EXTREME HEAT WARNING IN EFFECT FROM 10 AM TUESDAY TO 8 PM MST SATURDAY

Areas Affected: Upper Santa Cruz River and Altar Valleys including Nogales; Upper San Pedro River Valley including Sierra Vista/Benson; Eastern Cochise County Below 5000 Feet including Douglas/Willcox

Urgency: Expected

Severity: Severe

Certainty: Likely

Alert Sent: Sunday 11:45am MST

Alert Effective: Sunday 11:45am MST

Alert Expires: Monday 5:00am MST (expect updated alert by this time)

Event Onset: Tuesday 10:00am MST

Event Ends: Saturday 8:00pm MST

Issued by: NWS Tucson AZ

Details: 
...EXTREME HEAT WARNING IN EFFECT FROM 10 AM TUESDAY TO 8 PM MST SATURDAY...

* WHAT...Dangerously hot conditions with temperatures 98 to 104
degrees expected. Overnight lows 71 to 78 degrees. Major HeatRisk
is expected Tuesday through Saturday with isolated Extreme
HeatRisk.

* WHERE...Eastern Cochise County below 5000 feet, Upper San Pedro
River Valley, and Upper Santa Cruz River Valley/Altar Valley.

* WHEN...From 10 AM Tuesday to 8 PM MST Saturday.

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

Information: 
To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when possible and
drink plenty of water.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.af5f9cb12134f504ceaeefe6f2aa2c7b8b226bd2.001.1
Codes: AZZ503, AZZ507, AZZ508
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.af5f9cb12134f504ceaeefe6f2aa2c7b8b226bd2.001.1