Boundary Reservoir at Forebay near Metaline Falls water temperature

Boundary Reservoir at Forebay near Metaline Falls · Lake

The current water temperature at Boundary Reservoir at Forebay near Metaline Falls is 22.4 °C (as of September 1, 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.

22.4 °C

Measured: September 1, 2026 · continuously updated

💧 Water 22.4° · ☀️ Air 20.9° · high today 26.4°

Temperature trend of recent weeks

Boundary Reservoir at Forebay near Metaline Falls — Photo: BLM Oregon & Washington · Public domain · Wikimedia Commons

Measurement series & statistics

This measurement series includes 487 data points since July 3, 2026.

Lowest recorded value: 18.1 °C on July 3, 2026 · highest value: 24.3 °C on July 30, 2026.

Nearby waters

Pend Oreille River at International Boundary · 1.4 km away22.1 °C Kootenai River at Porthill, Idaho · 61.5 km away15.7 °C Kootenai River at Bonners Ferry, Idaho · 82.4 km away14.4 °C Hall Creek above Inchelium, Washington · 99.2 km away17.3 °C Kootenai River at Leonia, Idaho · 103.8 km away13.8 °C

Frequently asked questions

Can you swim at Boundary Reservoir at Forebay near Metaline Falls right now?
The current water temperature is 22.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Boundary Reservoir at Forebay near Metaline Falls?
Currently 22.4 °C (updated continuously).

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