Lexington Weather

Lexington, Massachusetts, USA

65°F
6/10/2026 7:25am 
  • Lexington Conditions: Clear
  • Temperature: 64.8°F / 18.2°CWarmer 1.7°F than last hour.
  • Dew Point: 57.7°FIncreased 2.3°Fsince last hour.
  • Relative Humidity: 78%Increased 2.0% since last hour.
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 29.87 in Steady
  • Visibility: 10 miles
  • Rain Today: 0.00 in
  •   

Watches, Warnings, and Advisories

Issued by the National Weather Service - San Francisco Bay Area, CA

    RED FLAG WARNING  

North Bay Interior Mountains, CA

Red Flag Warning issued June 9 at 6:43PM PDT until June 11 at 9:00AM PDT by NWS San Francisco CA

RED FLAG WARNING REMAINS IN EFFECT FROM 11 PM WEDNESDAY TO 9 AM PDT THURSDAY

Areas Affected: North Bay Interior Mountains; East Bay Hills

Urgency: Expected

Severity: Severe

Certainty: Likely

Alert Sent: Tuesday 6:43pm PDT

Alert Effective: Tuesday 6:43pm PDT

Alert Expires: Wednesday 6:00am PDT (expect updated alert by this time)

Event Onset: Wednesday 11:00pm PDT

Event Ends: Thursday 9:00am PDT

Issued by: NWS San Francisco CA

Details: 
...RED FLAG WARNING REMAINS IN EFFECT FROM 11 PM WEDNESDAY TO 9 AM PDT THURSDAY...

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 PM WEDNESDAY TO 9 AM
PDT THURSDAY DUE TO WIND AND LOW RELATIVE HUMIDITY FOR NORTH BAY
INTERIOR MOUNTAINS AND EAST BAY HILLS...

....Hot, dry, and windy conditions combined with mixed vegetation,
such as grass, will lead to critical fire weather conditions
Wednesday night into Thursday morning...

* AFFECTED AREA...East Bay Hills and North Bay Interior Mountains.

* TIMING...From 11 PM Wednesday to 9 AM PDT Thursday.

* WINDS 20 FOOT...Northwest winds 10 to 20 mph with gusts up to 45
mph. Ridge top wind gusts may exceed 60 mph.

* RELATIVE HUMIDITY...Relative Humidity between 12 to 18 percent.

* IMPACTS...Extreme fire behavior and rapid rates of spread likely on
new and existing wildfires. There will be an increased risk for
power outages.

Information: 
Please advise responding agencies or fire crews in the field of this
fire weather alert.

Never leave burning debris or camp fires unattended; extinguish them
completely. Avoid using equipment or machinery that could create a
spark. Secure tow chains to avoid dragging and subsequent sparks.
Never toss cigarette butts out of your vehicle's window. Remember,
one less spark, one less flame.

Familiarize yourself with your emergency plan! Where will you go? How
will you get there? Do you have your go kit ready to go? Who will you
call to let others know you are safe? Visit ready.gov/plan for more
information.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.47771983edc4ed98911598ff1f827e50443e3eac.001.1
Codes: CAZ504, CAZ515
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.47771983edc4ed98911598ff1f827e50443e3eac.001.1

 

    HEAT ADVISORY  

North Bay Interior Mountains, CA

Heat Advisory issued June 9 at 1:29PM PDT until June 11 at 11:00PM PDT by NWS San Francisco CA

HEAT ADVISORY IN EFFECT FROM NOON TO 11 PM PDT THURSDAY

Areas Affected: Sonoma Coastal Range; North Bay Interior Mountains; North Bay Interior Valleys; San Francisco Bay Shoreline; East Bay Interior Valleys; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills

Urgency: Expected

Severity: Moderate

Certainty: Likely

Alert Sent: Tuesday 1:29pm PDT

Alert Effective: Tuesday 1:29pm PDT

Alert Expires: Wednesday 5:00am PDT (expect updated alert by this time)

Event Onset: Thursday 12:00pm PDT

Event Ends: Thursday 11:00pm PDT

Issued by: NWS San Francisco CA

Details: 
...HEAT ADVISORY IN EFFECT FROM NOON TO 11 PM PDT THURSDAY...

* WHAT...High temperatures between 90 and 103 for interior valleys
and higher elevations. High temperatures between 85 and 96 degrees
for the Bay Shoreline.

* WHERE...The East Bay and San Francisco Bay Shoreline, North Bay
Interior Mountains and Valleys, and The Santa Clara Valley and
Eastern Hills.

* WHEN...From noon to 11 PM PDT Thursday.

* IMPACTS...This level of heat affects most individuals sensitive to
heat, especially those without effective cooling and/or adequate
hydration. Impacts possible in some health systems and in
heat-sensitive industries.

Information: 
Hydration is a critical piece to surviving the heat. Drink water, and
if possible, take water to those who are vulnerable.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to the early
morning or evening. Take action when you experience symptoms of heat
exhaustion and/or heat stroke.

Beat the heat and check the backseat! Do not leave young children or
pets in unattended vehicles. Car interiors will reach lethal
temperatures in a matter of minutes.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.6ae15e6092fb8f896380731e2410efa229822b14.001.1
Codes: CAZ503, CAZ504, CAZ506, CAZ508, CAZ510, CAZ513, CAZ514, CAZ515
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.6ae15e6092fb8f896380731e2410efa229822b14.001.1