Lexington Weather

Lexington, Massachusetts, USA

67°F

8/29/2026 2:16am

Lexington Conditions: Clear
Temperature: 66.9°F / 19.4°C
Dew Point: 55.9°F
Relative Humidity: 68%
Wind: Calm, 10-min avg: Calm, gust: 1 mph
Barometer: 30.04 in Rising Slowly
Visibility: 10 miles
Rain Today: 0.00 in

Watches, Warnings, and Advisories

Issued by the National Weather Service - NWS Tucson Arizona

EXTREME HEAT WARNING

Extreme Heat Warning issued August 28 at 2:00PM MST until August 29 at 8:00PM MST by NWS Tucson AZ

EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST SATURDAY

Areas Affected: Western Pima County Including Ajo/Organ Pipe Cactus National Monument; Tohono O'odham Nation including Sells; Tucson Metro Area including Tucson/Green Valley/Marana/Vail; South Central Pinal County including Eloy/Picacho Peak State Park; Southeast Pinal County including Kearny/Mammoth/Oracle; Upper Gila River and Aravaipa Valleys including Clifton/Safford

Urgency: Expected

Severity: Severe

Certainty: Likely

Alert Sent: Friday 2:00pm MST

Alert Effective: Friday 2:00pm MST

Alert Expires: Saturday 5:00am MST (expect updated alert by this time)

Event Onset: Friday 2:00pm MST

Event Ends: Saturday 8:00pm MST

Issued by: NWS Tucson AZ

Details:

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST SATURDAY...

* WHAT...Dangerously hot conditions with high temperatures ranging
between 104 to 110 degrees and low temperatures 79 to 85 degrees.
Major to Extreme HeatRisk today through Saturday.

* WHERE...Pinal County, Tohono O'odham Nation, Tucson Metro Area,
Upper Gila River Valley, and Western Pima County.

* WHEN...Until 8 PM MST Saturday.

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

Information:

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.

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 and
drink plenty of water.

Meta data:

ID: urn:oid:2.49.0.1.840.0.01b3ba150e43f3029e2cd083e50fa4f71294a443.001.1
Codes: AZZ501, AZZ502, AZZ504, AZZ505, AZZ506, AZZ509
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.01b3ba150e43f3029e2cd083e50fa4f71294a443.001.1

FLOOD WATCH

Flood Watch issued August 28 at 1:58PM MST until August 31 at 5:00AM MST by NWS Tucson AZ

FLOOD WATCH IN EFFECT FROM SATURDAY MORNING THROUGH LATE SUNDAY NIGHT

Areas Affected: Tohono O'odham Nation including Sells; Upper Santa Cruz River and Altar Valleys including Nogales; Tucson Metro Area including Tucson/Green Valley/Marana/Vail; South Central Pinal County including Eloy/Picacho Peak State Park; Southeast Pinal County including Kearny/Mammoth/Oracle; Upper San Pedro River Valley including Sierra Vista/Benson; Dragoon/Mule/Huachuca and Santa Rita Mountains including Bisbee/Canelo Hills/Madera Canyon; Santa Catalina and Rincon Mountains including Mount Lemmon/Summerhaven; Baboquivari Mountains including Kitt Peak

Urgency: Future

Severity: Severe

Certainty: Possible

Alert Sent: Friday 1:58pm MST

Alert Effective: Friday 1:58pm MST

Alert Expires: Saturday 5:15am MST (expect updated alert by this time)

Event Onset: Saturday 11:00am MST

Event Ends: Monday 5:00am MST

Issued by: NWS Tucson AZ

Details:

...FLOOD WATCH IN EFFECT FROM SATURDAY MORNING THROUGH LATE SUNDAY NIGHT...

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Tucson Metro Area, Southeast Pinal County, Tohono O'odham
Nation, Upper San Pedro River Valley Upper Santa Cruz River
Valley/Altar Valley, Baboquivari Mountains, Catalina and Rincon
Mountains, Dragoon and Mule and Huachuca and Santa Rita Mountains.

* WHEN...From Saturday morning through late Sunday night.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Low-water crossings may be flooded. Flooding may occur in poor
drainage and urban areas.

* ADDITIONAL DETAILS...
- An increase in moisture will bring scattered thunderstorms
Saturday and Sunday. Rainfall rates in excess of 1 inch per hour
are expected with the stronger storms with isolated areas having
the potential of 1-3 inches. Additional rainfall from the
previous day and overnight activity will result in faster
responses in normally dry washes, creeks and roadway dips.

- Http://www.weather.gov/safety/flood

Information:

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

Meta data:

ID: urn:oid:2.49.0.1.840.0.01dbcaa52aa6c21d9efeae0fd7ee9259df5d690f.001.1
Codes: AZZ502, AZZ503, AZZ504, AZZ505, AZZ506, AZZ507, AZZ513, AZZ514, AZZ515
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.01dbcaa52aa6c21d9efeae0fd7ee9259df5d690f.001.1