Lexington Weather

Lexington, Massachusetts, USA

50°F
9/15/2026 3:49am 
  • Lexington Conditions: Clear
  • Temperature: 50.2°F / 10.1°CColder 0.9°F than last hour.
  • Dew Point: 45.5°F 
  • Relative Humidity: 84%Increased 3.0% since last hour.
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 30.24 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   

Watches, Warnings, and Advisories

Issued by the National Weather Service - St. Louis, MO

    HEAT ADVISORY  

Heat Advisory issued September 15 at 1:44AM CDT until September 15 at 7:00PM CDT by NWS St Louis MO

HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT THIS EVENING

Areas Affected: Bond; Clinton; Marion; Washington; Randolph; Madison; St. Clair; Monroe; Moniteau; Cole; Osage; Gasconade; Warren; St. Charles; Franklin; St. Louis; St. Louis City; Jefferson; Crawford; Washington; St. Francois; Ste. Genevieve; Iron; Madison; Reynolds

Urgency: Expected

Severity: Moderate

Certainty: Likely

Alert Sent: Tuesday 1:44am CDT

Alert Effective: Tuesday 1:44am CDT

Alert Expires: Tuesday 4:45pm CDT (expect updated alert by this time)

Event Onset: Tuesday 11:00am CDT

Event Ends: Tuesday 7:00pm CDT

Issued by: NWS St Louis MO

Details: 
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT THIS EVENING...

* WHAT...Heat index values up to 109 expected.

* WHERE...Portions of south central and southwest Illinois and
central, east central, and southeast Missouri.

* WHEN...From 11 AM this morning to 7 PM CDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.

Information: 
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors. Young children and
pets should never be left unattended in vehicles under any
circumstances. 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. 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.

People in the Saint Louis Metropolitan Area can get information about
cooling centers or energy assistance related to the excessive heat by
calling the United Way of Greater Saint Louis at 800-427-4626, or if
calling from a land line phone dial 2-1-1. You can also call Cool
Down Saint Louis at 314-241-7668.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.1382cb5a279f8b74020af5ffaa3c82f7467ab3b1.001.1
Codes: ILZ064, ILZ069, ILZ070, ILZ074, ILZ079, ILZ100, ILZ101, ILZ102, MOZ047, MOZ048, MOZ049, MOZ059, MOZ060, MOZ061, MOZ062, MOZ063, MOZ064, MOZ065, MOZ072, MOZ073, MOZ074, MOZ075, MOZ084, MOZ085, MOZ099
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.1382cb5a279f8b74020af5ffaa3c82f7467ab3b1.001.1