Lexington Weather

Lexington, Massachusetts, USA

71°F
8/28/2026 12:21am 
  • Lexington Conditions: Mostly cloudy
  • Temperature: 71.2°F / 21.8°CColder 0.6°F than last hour.
  • Dew Point: 67.5°FIncreased 0.4°Fsince last hour.
  • Relative Humidity: 88%Increased 3.0% since last hour.
  • Wind: Calm, 10-min avg: Calm, gust: 1 mph
  • Barometer: 29.93 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   

Extreme Heat Warning

Issued by the National Weather Service - NWS Flagstaff, AZ

    EXTREME HEAT WARNING  

Extreme Heat Warning issued August 26 at 6:03AM MST until August 28 at 8:00PM MST by NWS Flagstaff AZ

EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MST FRIDAY BELOW 4000 FEET

Areas Affected: Grand Canyon Country

Urgency: Expected

Severity: Severe

Certainty: Likely

Alert Sent: Wednesday 6:03am MST

Alert Effective: Wednesday 6:03am MST

Alert Expires: Friday 8:00pm MST

Event Onset: Wednesday 10:00am MST

Event Ends: Friday 8:00pm MST

Issued by: NWS Flagstaff AZ

Details: 
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MST FRIDAY BELOW 4000 FEET...

* WHAT...Dangerously hot conditions expected below 4000 feet, with
daytime temperatures ranging from 95 to 100 degrees at Havasupai
Gardens, to 107 to 112 degrees at Phantom Ranch.

* WHERE...Lower elevations of the Grand Canyon.

* WHEN...From 10 AM this morning to 8 PM MST Friday.

* IMPACTS...Most individuals will be at risk for heat-related
illnesses without effective cooling or adequate hydration,
especially with prolonged outdoor exposure.

Information: 
This warning is reserved for only the hottest days of the year and is
issued when temperatures are expected to rise to dangerous levels.

Day hikers on Bright Angel Trail should descend no farther than 1 1/2
miles from the upper trailhead. Between the hours of 10 AM and 4 PM,
hikers should be out of the canyon or at Havasupai Gardens or Bright
Angel campgrounds, physical activity is discouraged. All hikers
should have adequate gear, including a wide-brimmed hat, sunscreen,
salty snacks, sufficient water, and electrolyte mix. Doubling your
calorie intake helps maintain your energy.

Hike smart.

Take action when you see symptoms of heat exhaustion and heat stroke.
Anyone overcome by heat should be moved to a cool and shaded
location. Heat stroke is an emergency! Call 9 1 1.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.657529b5f3bc75d8d858c20ac5e2afd1db560b56.001.1
Codes: AZZ006
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.657529b5f3bc75d8d858c20ac5e2afd1db560b56.001.1