Lexington Weather

Lexington, Massachusetts, USA

78°F

7/12/2026 5:54pm

Lexington Conditions: Partly cloudy
Temperature: 78.4°F / 25.8°C
Dew Point: 55.9°F
Relative Humidity: 46%
Wind: Calm, 10-min avg: Calm, gust: None
Barometer: 30.12 in Steady
Visibility: 10 miles
Rain Today: 0.00 in

Watches, Warnings, and Advisories

Issued by the National Weather Service - Aberdeen, SD

EXTREME HEAT WARNING

Corson, SD

Extreme Heat Warning issued July 12 at 10:48AM CDT until July 16 at 10:00PM CDT by NWS Aberdeen SD

EXTREME HEAT WARNING NOW IN EFFECT UNTIL 10 PM CDT /9 PM MDT/ THURSDAY

Areas Affected: Corson; Campbell; Walworth; Dewey; Potter

Urgency: Expected

Severity: Severe

Certainty: Likely

Alert Sent: Sunday 10:48am CDT

Alert Effective: Sunday 10:48am CDT

Alert Expires: Sunday 9:00pm CDT (expect updated alert by this time)

Event Onset: Sunday 10:48am CDT

Event Ends: Thursday 10:00pm CDT

Issued by: NWS Aberdeen SD

Details:

...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 10 PM CDT /9 PM MDT/ THURSDAY...

* WHAT...Prolonged dangerously hot conditions with heat index values
up to 105.

* WHERE...Campbell, Corson, Dewey, Potter, and Walworth Counties.

* WHEN...Until 10 PM CDT /9 PM MDT/ Thursday.

* 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.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

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.

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.

Meta data:

ID: urn:oid:2.49.0.1.840.0.d92831b6aa72e787eac68ea8f4995facafbcdd74.001.1
Codes: SDZ003, SDZ004, SDZ009, SDZ015, SDZ016
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.d92831b6aa72e787eac68ea8f4995facafbcdd74.001.1

FIRE WEATHER WATCH

Corson, SD

Fire Weather Watch issued July 12 at 11:19AM CDT until July 13 at 9:00PM CDT by NWS Aberdeen SD

FIRE WEATHER WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING

Areas Affected: Corson; Campbell; Dewey

Urgency: Future

Severity: Severe

Certainty: Possible

Alert Sent: Sunday 11:19am CDT

Alert Effective: Sunday 11:19am CDT

Alert Expires: Sunday 9:30pm CDT (expect updated alert by this time)

Event Onset: Monday 2:00pm CDT

Event Ends: Monday 9:00pm CDT

Issued by: NWS Aberdeen SD

Details:

...FIRE WEATHER WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY EVENING...

...FIRE WEATHER WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH MONDAY
EVENING DUE TO WIND AND LOW RELATIVE HUMIDITY FOR CORSON, CAMPBELL,
AND DEWEY...

The National Weather Service in Aberdeen SD has issued a Fire Weather
Watch.

* AFFECTED AREA...In South Dakota, Corson, Campbell, and Dewey.

* TIMING...From Monday afternoon through Monday evening.

* WINDS...South winds 20 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...Relative Humidity between 18 to 22 percent.

* IMPACTS...Any fires that develop will spread rapidly. Outdoor
burning is not recommended.

Information:

A Fire Weather Watch means that critical fire weather conditions are
possible during the valid watch time. These conditions could promote
the rapid spread of wildfires which could become life-threatening.
Check weather.gov/abr/fire for forecast updates and a possible
upgrade of this watch to a Red Flag Warning.

Follow all fire restrictions. Avoid activities that could cause
sparks.

Meta data:

ID: urn:oid:2.49.0.1.840.0.a714abdabf5e8eb104189280c0f39ea19974e3b8.001.1
Codes: SDZ003, SDZ004, SDZ015
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a714abdabf5e8eb104189280c0f39ea19974e3b8.001.1

SPECIAL WEATHER STATEMENT

Corson, SD

Special Weather Statement issued July 12 at 12:28AM CDT by NWS Aberdeen SD

ELEVATED FIRE WEATHER CONCERNS THIS AFTERNOON

Areas Affected: Corson; Dewey

Urgency: Expected

Severity: Moderate

Certainty: Observed

Alert Sent: Sunday 12:28am CDT

Alert Effective: Sunday 12:28am CDT

Alert Expires: Sunday 9:00pm CDT

Event Onset: Sunday 12:28am CDT

Issued by: NWS Aberdeen SD

Details:

...ELEVATED FIRE WEATHER CONCERNS THIS AFTERNOON...

The combination of humidity dropping below 20%, wind gusts of 20-
35 mph, and drying fuels may lead to elevated fire danger concerns
over the western portions of Corson and Dewey Counties this
afternoon. Any fires that ignite may spread rapidly and become
difficult to suppress.

Meta data:

ID: urn:oid:2.49.0.1.840.0.bae4eb3c0de5ffc9cd2e9380f3c7b8ab6dc7b194.001.1
Codes: SDZ003, SDZ015
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.bae4eb3c0de5ffc9cd2e9380f3c7b8ab6dc7b194.001.1