Lexington Weather

Lexington, Massachusetts, USA

78°F

7/13/2026 9:09pm

Lexington Conditions: Clear
Temperature: 78.1°F / 25.6°C
Dew Point: 66.2°F
Relative Humidity: 67%
Wind: Calm, 10-min avg: Calm, gust: 1 mph
Barometer: 30.01 in Steady
Visibility: 10 miles
Rain Today: 0.00 in

Southeast Middlesex County, MA - Heat Advisory
- SEE ALL NEARBY ALERTS -

Watches, Warnings, and Advisories

Issued by the National Weather Service - Duluth, MN

EXTREME HEAT WARNING

South Itasca, MN

Extreme Heat Warning issued July 13 at 1:40PM CDT until July 13 at 9:00PM CDT by NWS Duluth MN

EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING

Areas Affected: Koochiching; North St. Louis; Northern Cook/Northern Lake; North Itasca; Central St. Louis; Southern Lake/North Shore; Southern Cook/North Shore; South Itasca

Urgency: Expected

Severity: Severe

Certainty: Likely

Alert Sent: Monday 1:40pm CDT

Alert Effective: Monday 1:40pm CDT

Alert Expires: Monday 9:00pm CDT

Event Onset: Monday 1:40pm CDT

Event Ends: Monday 9:00pm CDT

Issued by: NWS Duluth MN

Details:

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING...

* WHAT...Dangerously hot conditions with temperatures up to 100.

* WHERE...Koochiching, Itasca, Central and North St. Louis, Cook and
Lake Counties. This includes the Tribal Lands of the Grand Portage
Reservation and the Bois Forte Band, Nett Lake, Lake Vermilion
and, Deer Creek areas. Other locations including Voyageurs
National Park. The entire Boundary Waters is also included.

* WHEN...Until 9 PM CDT this evening.

* 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.

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.fc20cefb1ddf9584531134f0e7ea534a3bac445a.001.1
Codes: MNZ010, MNZ011, MNZ012, MNZ018, MNZ019, MNZ020, MNZ021, MNZ026
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.fc20cefb1ddf9584531134f0e7ea534a3bac445a.001.1

RED FLAG WARNING

South Itasca, MN

Red Flag Warning issued July 13 at 1:32PM CDT until July 13 at 10:00PM CDT by NWS Duluth MN

RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH-CENTRAL AND NORTHEAST MINNESOTA

Areas Affected: North Itasca; Central St. Louis; Southern Lake/North Shore; Southern Cook/North Shore; North Cass; South Itasca; Carlton/South St. Louis

Urgency: Expected

Severity: Severe

Certainty: Likely

Alert Sent: Monday 1:32pm CDT

Alert Effective: Monday 1:32pm CDT

Alert Expires: Monday 10:00pm CDT

Event Onset: Monday 1:32pm CDT

Event Ends: Monday 10:00pm CDT

Issued by: NWS Duluth MN

Details:

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTH-CENTRAL AND NORTHEAST MINNESOTA...

* AFFECTED AREA...In Minnesota, North Itasca, Central St. Louis,
Southern Lake, Southern Cook, North Cass, South Itasca and
Carlton and South St. Louis.

* WINDS...Southwest 10 to 15 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 20 percent.

* IMPACTS...The rapid spread of any fires may occur due to the
forecast weather conditions and dry fuels per guidance from
local land management agencies.

Information:

A Red Flag Warning on Monday means that critical fire weather
conditions are either occurring now, or will shortly. A
combination of strong winds, low relative humidity, and warm
temperatures can contribute to extreme fire behavior.

Meta data:

ID: urn:oid:2.49.0.1.840.0.36ca6c41177eb6fc6f03430d0aa66545829537b1.002.1
Codes: MNZ018, MNZ019, MNZ020, MNZ021, MNZ025, MNZ026, MNZ037
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.36ca6c41177eb6fc6f03430d0aa66545829537b1.002.1