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Photo: Old Reservoir, Lexington MA by John Phelan (CC BY 3.0) License

Lexington Reservoir

Lake · Lexington, Massachusetts

Rainy today

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Current water conditions

Water temp
71°F
21°C
Comfortable for a swim today. The water's in a comfortable range. Still check depth, currents, and the forecast, and follow any posted advisories before getting in.

Live data from NOAA buoy 44013 (31 mi away), as of Aug 21, 7:10 AM UTC. Conditions are for general information only and can change quickly — always judge the water in person and follow posted advisories before swimming.

Weather at Lexington Reservoir

H: 82° L: 64°
Light rain
Light rain
66°
|
Feels like 67°
Precipitation
82%
Humidity
87%
Wind
5 mph
UV Index
0
Water Conditions:
🏊Cool but swimmable🌧️Rain expected
12 AM
Light rain
66°
3 AM
Light rain
66°
6 AM
Light rain
65°
9 AM
Light rain
68°
12 PM
Patchy light rain
73°
3 PM
Overcast
82°
6 PM
Overcast
74°
9 PM
Overcast
66°

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Frequently asked questions

Where is Lexington Reservoir?
Lexington Reservoir is a lake in Lexington, Massachusetts.
What is the water temperature at Lexington Reservoir?
As of August 21, 2026, the water temperature at Lexington Reservoir in Lexington, Massachusetts is 71°F (21°C), measured by NOAA buoy 44013, 31 miles away.
Can you swim at Lexington Reservoir?
There is no fixed answer for Lexington Reservoir: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at Lexington Reservoir in Lexington, Massachusetts. Check current water conditions before you go, and follow posted signs and local guidance.
How is Lexington Reservoir rated?
Lexington Reservoir in Lexington, Massachusetts has an average visitor rating of 4 out of 5, based on 6 reviews.

Visitor Reviews

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Water temperatureCrowds & parkingBest time to goSafety & access

Best Times to Visit

🌧️
Right Now
Not ideal for outdoor activities today
🏞️ Lakes Tips:
  • Check for boat launch facilities and fees
  • Obtain required fishing licenses before arrival
  • Be aware of lake-specific regulations and restrictions
  • Monitor water quality reports before swimming
Best Seasons:
☀️ Summer (Jun-Aug)🍂 Fall (Sep-Nov)🌸 Spring (Mar-May)

Location & Contact

Lexington, MA 02421

Lexington, Massachusetts 02421

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