Lexington Weather

Lexington, Massachusetts, USA

59°F
9/9/2026 8:11am 
  • Lexington Conditions: Overcast
  • Temperature: 59.4°F / 15.2°CWarmer 0.8°F than last hour.
  • Dew Point: 56.7°FIncreased 0.8°Fsince last hour.
  • Relative Humidity: 91% 
  • Wind: Calm, 10-min avg: Calm, gust: None
  • Barometer: 30.22 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

    HEAT ADVISORY  

Heat Advisory issued September 9 at 3:14AM PDT until September 10 at 10:00PM PDT by NWS San Francisco CA

HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THURSDAY

Areas Affected: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast

Urgency: Expected

Severity: Moderate

Certainty: Likely

Alert Sent: Wednesday 3:14am PDT

Alert Effective: Wednesday 3:14am PDT

Alert Expires: Thursday 10:00pm PDT

Event Onset: Wednesday 3:14am PDT

Event Ends: Thursday 10:00pm PDT

Issued by: NWS San Francisco CA

Details: 
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THURSDAY...

* WHAT...Hot conditions with temperatures 10 to 20 degrees above
normal during the day, with overnight lows also running 10 to 20
degrees above normal.

* WHERE...Bay Area and Central Coast.

* WHEN...Until 10 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. Hot conditions can cause heat illnesses.

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.ac96bb01ba9fddc9e7545fa02ccb84a8c78b799e.001.1
Codes: CAZ006, CAZ502, CAZ503, CAZ504, CAZ505, CAZ506, CAZ508, CAZ509, CAZ510, CAZ512, CAZ513, CAZ514, CAZ515, CAZ516, CAZ517, CAZ518, CAZ528, CAZ529, CAZ530
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.ac96bb01ba9fddc9e7545fa02ccb84a8c78b799e.001.1

 

    COASTAL FLOOD ADVISORY  

Coastal Flood Advisory issued September 9 at 1:01AM PDT until September 10 at 1:00AM PDT by NWS San Francisco CA

COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 AM PDT THURSDAY

Areas Affected: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast

Urgency: Expected

Severity: Minor

Certainty: Likely

Alert Sent: Wednesday 1:01am PDT

Alert Effective: Wednesday 1:01am PDT

Alert Expires: Thursday 1:00am PDT

Event Onset: Wednesday 1:01am PDT

Event Ends: Thursday 1:00am PDT

Issued by: NWS San Francisco CA

Details: 
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1 AM PDT THURSDAY...

* WHAT...Up to 1.0 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal waterways.

* WHERE...Bayshore locations along the San Francisco Bay, San
Pablo Bay, and Monterey Bay.

* WHEN...In effect now through 1 AM PDT Thursday.

* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected.

* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high tide
is expected to be 1.0 ft above normal (6.79 ft MLLW) at 10:54
PM Wednesday 9/9. These predictions include up to 0.6 ft of
storm surge that will enhance the astronomical tide and flooding
threat. High tide varies up to 90 minutes earlier or later
along the Pacific Coast and through the San Francisco Bay,
respectively.

Information: 
If travel is required, allow extra time as some roads may be
closed. Do not drive around barricades or through water of
unknown depth. Take the necessary actions to protect flood-prone
property.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.10a8502b2686c42a52ea3f39a8424bcde13c2b31.001.1
Codes: CAZ006, CAZ506, CAZ508, CAZ529, CAZ530
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.10a8502b2686c42a52ea3f39a8424bcde13c2b31.001.1