Allagash River near Allagash, Maine water temperature

Allagash River near Allagash, Maine · River

The current water temperature at Allagash River near Allagash is 19.8 °C (as of September 1, 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.

19.8 °C

Measured: September 1, 2026 · continuously updated

💧 Water 19.8° · ☀️ Air 13.3° · high today 20.5°

Temperature trend of recent weeks

Measurement series & statistics

This measurement series includes 492 data points since July 3, 2026.

Lowest recorded value: 16.9 °C on July 20, 2026 · highest value: 29.2 °C on August 7, 2026.

Nearby waters

E. Branch Penobscot River below Grand Lake Matagamon · 106.3 km away20.9 °C Meduxnekeag River at Lowery Rd. near Houlton, Maine · 138.7 km away22.6 °C

Frequently asked questions

Can you swim at Allagash River near Allagash right now?
The current water temperature is 19.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Allagash River near Allagash?
Currently 19.8 °C (updated continuously).

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