Lexington Weather

Lexington, Massachusetts, USA

74°F
7/13/2026 11:49pm 
  • Lexington Conditions: Clear
  • Temperature: 74.1°F / 23.4°CColder 1.6°F than last hour.
  • Dew Point: 62.4°FDecreased 1.6°Fsince last hour.
  • Relative Humidity: 67% 
  • Wind: Calm, 10-min avg: Calm, gust: 4 mph
  • Barometer: 29.99 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 - Great Falls, MT

    FLOOD WATCH  

Gallatin Valley, MT

Flood Watch issued July 13 at 2:16PM MDT until July 15 at 12:00AM MDT by NWS Great Falls MT

FLOOD WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING

Areas Affected: Southern Rocky Mountain Front; Southern High Plains; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine; Cascade County below 5000ft; Judith Basin County and Judith Gap; Fergus County below 4500ft; Upper Blackfoot and MacDonald Pass; Gates of the Mountains; Little Belt and Highwood Mountains; Snowy and Judith Mountains; Helena Valley; Big Belt, Bridger and Castle Mountains; Meagher County Valleys; Elkhorn and Boulder Mountains; Canyon Ferry Area; Missouri Headwaters; Gallatin Valley; Gallatin and Madison County Mountains and Centennial Mountains

Urgency: Future

Severity: Severe

Certainty: Possible

Alert Sent: Monday 2:16pm MDT

Alert Effective: Monday 2:16pm MDT

Alert Expires: Tuesday 3:15am MDT (expect updated alert by this time)

Event Onset: Tuesday 3:00pm MDT

Event Ends: Wednesday 12:00am MDT

Issued by: NWS Great Falls MT

Details: 
...FLOOD WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING...

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

* WHERE...Portions of central, north central, and southwest Montana.

* WHEN...From Tuesday afternoon through Tuesday evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas and along burn
scars.

* ADDITIONAL DETAILS...
- Heavy rainfall produced by thunderstorms may lead to flash
flooding. Rainfall rates in excessive of 1 inch per hour are
possible under heavier thunderstorms.
- Some locations that may experience flooding include...
Great Falls, Bozeman, Helena, Lewistown, Townsend, Fort Benton,
West Yellowstone, White Sulphur Springs, Cascade, Big Sandy,
Stanford, Lincoln, Belgrade, East Helena, Three Forks, Manhattan,
Belt, Geraldine, Denton, Hobson and the Horse Gulch burn scar.
- 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.e56b5c9ee9bc21267156e82db7456d1032066254.001.1
Codes: MTZ307, MTZ308, MTZ310, MTZ311, MTZ312, MTZ313, MTZ314, MTZ315, MTZ316, MTZ317, MTZ318, MTZ319, MTZ320, MTZ321, MTZ322, MTZ323, MTZ324, MTZ326, MTZ330
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e56b5c9ee9bc21267156e82db7456d1032066254.001.1

 

    SPECIAL WEATHER STATEMENT  

Gallatin Valley, MT

Special Weather Statement issued July 13 at 9:32PM MDT by NWS Great Falls MT

Strong thunderstorms will impact portions of northeastern Madison and central Gallatin Counties through 1015 PM MDT

Areas Affected: Missouri Headwaters; Madison River Valley; Gallatin Valley; Gallatin and Madison County Mountains and Centennial Mountains

Urgency: Expected

Severity: Moderate

Certainty: Observed

Alert Sent: Monday 9:32pm MDT

Alert Effective: Monday 9:32pm MDT

Alert Expires: Monday 10:15pm MDT

Event Onset: Monday 9:32pm MDT

Issued by: NWS Great Falls MT


Threats: 
Max Wind Gusts: 50 MPH
Max Hail Size: 0.00 in

Details: 
...Strong thunderstorms will impact portions of northeastern Madison and central Gallatin Counties through 1015 PM MDT...

At 931 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 19 miles southeast of Harrison to near Ennis.
Movement was northeast at 25 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.

Locations impacted include...
Gallatin Gateway.

Information: 
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

Meta data: 
ID: urn:oid:2.49.0.1.840.0.42cec9e33ce4c608bb4cd293713c5dfb54e2b002.001.1
Codes: MTZ324, MTZ325, MTZ326, MTZ330
Link: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.42cec9e33ce4c608bb4cd293713c5dfb54e2b002.001.1