Lexington Weather

Lexington, Massachusetts, USA

66°F
6/30/2026 1:19am 
  • Lexington Conditions: Clear
  • Temperature: 65.8°F / 18.8°CColder 0.6°F than last hour.
  • Dew Point: 58.8°FIncreased 0.5°Fsince last hour.
  • Relative Humidity: 78%Increased 3.0% since last hour.
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 30.07 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   
Southeast Middlesex County, MA - Extreme Heat Watch
 - SEE ALL NEARBY ALERTS -

Watches, Warnings, and Advisories

Issued by the National Weather Service - Green Bay, WI

    EXTREME HEAT WARNING  

Waupaca, WI

Extreme Heat Warning issued June 29 at 5:52PM CDT until June 30 at 7:00PM CDT by NWS Green Bay WI

EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT TUESDAY

Areas Affected: Marathon; Shawano; Wood; Portage; Waupaca; Outagamie; Brown; Waushara; Winnebago; Calumet

Urgency: Expected

Severity: Severe

Certainty: Likely

Alert Sent: Monday 5:52pm CDT

Alert Effective: Monday 5:52pm CDT

Alert Expires: Tuesday 2:00am CDT (expect updated alert by this time)

Event Onset: Monday 5:52pm CDT

Event Ends: Tuesday 7:00pm CDT

Issued by: NWS Green Bay WI

Details: 
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM CDT TUESDAY...

* WHAT...Dangerously hot conditions with heat index values up to 109
expected. Overnight heat indices will remain around 75 degrees,
which will still be hazardous for anyone without shelter after the
extreme heat in the afternoon.

* WHERE...Marathon, Portage, Waushara, Wood, Calumet, Winnebago,
Brown, Outagamie, Shawano, and Waupaca Counties.

* WHEN...Until 7 PM CDT Tuesday.

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

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

Meta data: 
ID: urn:oid:2.49.0.1.840.0.b04bdbf17521336b37c31ba58331d8dc843c8370.002.1
Codes: WIZ030, WIZ031, WIZ035, WIZ036, WIZ037, WIZ038, WIZ039, WIZ045, WIZ048, WIZ049
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.b04bdbf17521336b37c31ba58331d8dc843c8370.002.1