Cambridge Reservoir, Unnamed Trib 1, near Lexington, Massachusetts water temperature
Cambridge Reservoir, Unnamed Trib 1, near Lexington, Massachusetts · River
The current water temperature at Cambridge Reservoir is 20.2 °C (as of August 31, 2026, source: USGS).
A river can change temperature within hours — snowmelt, rain or power-plant operations show up immediately. That is why the measured value counts here, not an estimate.
20.2 °C
Measurement series & statistics
This measurement series includes 452 data points since July 3, 2026.
Lowest recorded value: 10.6 °C on July 26, 2026 · highest value: 39.8 °C on July 17, 2026.
Nearby waters
Cambridge Reservoir, Unnamed Trib 2, near Lexington, Massachusetts 18.6 °CHobbs Brook at Mill St near Lincoln, Massachusetts 16.0 °CHobbs Brk at Trapelo Rd at Lincoln, Massachusetts 24.3 °CCambridge Reservoir, Unnamed Trib 3, near Lexington, Massachusetts 19.2 °CHobbs Bk below Cambridge Reservoir near Kendall Green, Massachusetts 24.0 °C
Frequently asked questions
Can you swim at Cambridge Reservoir right now?
The current water temperature is 20.2 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Cambridge Reservoir?
Currently 20.2 °C (updated continuously).
