Boundary Reservoir water temperature
Boundary Reservoir, Forebay near Metaline Falls · Lake
The current water temperature at Boundary Reservoir is 9.3 °C (as of November 6, 2026, source: USGS).
Lakes stratify in summer: bathing-warm on top, markedly colder a few metres down. Measurements are taken at the surface — right where you swim.
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Measurement series & statistics
This measurement series includes 533 data points since September 7, 2026.
Lowest recorded value: 9.3 °C on November 6, 2026 · highest value: 20.3 °C on September 7, 2026.
In November, temperatures have ranged between 9.3 °C and 10.7 °C.
The current value is 0.6 °C below the November average of this series.
Nearby waters
Frequently asked questions
Can you swim at Boundary Reservoir right now?
The current water temperature is 9.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Boundary Reservoir?
Currently 9.3 °C (updated continuously).
How warm is at Boundary Reservoir in November?
In November, the water temperature recently averaged 9.9 °C.
When is the water warmest at Boundary Reservoir?
Across the measurement record, September is on average the warmest month (18.3 °C).
