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Live readings · updated daily

Water temperature in Maine

The latest readings from USGS real-time water sensors across Maine, warmest first. Snapshot updated August 21, 2026.

Warmest sensor reading right now

75°F24°C

USGS gauge St. Croix River at Milltown, Maine · as of 8 hrs ago

All reporting stations (warmest 50 of 73)

StationWater tempStreamflowGage heightObserved
St. Croix River at Milltown, MaineUSGS gauge75°F24°C8 hrs ago
Lewy Lake at Princeton, MaineUSGS gauge75°F24°C8 hrs ago
West Grand Lake at Grand Lake Stream, MaineUSGS gauge75°F24°C9 hrs ago
E. Br. Penobscot River below Grand Lake MatagamonUSGS gauge71°F22°C307 ft³/s2.73 ft9 hrs ago
Allagash River near Allagash, MaineUSGS gauge67°F19°C437 ft³/s2.23 ft9 hrs ago
Meduxnekeag River at Lowery Rd. nr Houlton, MaineUSGS gauge66°F19°C20 ft³/s1.46 ft8 hrs ago
Wild River at Gilead, MaineUSGS gauge65°F18°C26 ft³/s1.18 ft8 hrs ago
Androscoggin River at Rumford, MaineUSGS gauge1,620 ft³/s3.37 ft8 hrs ago
Androscoggin River near Auburn, MaineUSGS gauge2,010 ft³/s2.38 ft9 hrs ago
Aroostook River at Washburn, MaineUSGS gauge283 ft³/s1.07 ft9 hrs ago
Aroostook River near Masardis, MaineUSGS gauge114 ft³/s2.47 ft9 hrs ago
Austin Stream at Bingham, MaineUSGS gauge9 ft³/s2.97 ft9 hrs ago
Big Black River near Depot Mtn, MaineUSGS gauge72 ft³/s3.53 ft9 hrs ago
Black Stream near Dover-Foxcroft, MaineUSGS gauge2 ft³/s2.38 ft9 hrs ago
Branch Brook near Kennebunk, MaineUSGS gauge6 ft³/s1.60 ft8 hrs ago
Carrabassett River near North Anson, MaineUSGS gauge69 ft³/s2.64 ft9 hrs ago
Cobbosseecontee Stream at Gardiner, MaineUSGS gauge19 ft³/s2.38 ft9 hrs ago
Dead River near Dead River, MaineUSGS gauge272 ft³/s3.49 ft8 hrs ago
Ducktrap River near Lincolnville, MaineUSGS gauge0 ft³/s1.02 ft9 hrs ago
East Branch Penobscot River at Grindstone, MaineUSGS gauge463 ft³/s4.65 ft9 hrs ago
East Branch Wesserunsett Stream near Athens, MaineUSGS gauge1 ft³/s2.24 ft9 hrs ago
Ellis River at South Andover, MaineUSGS gauge30 ft³/s4.70 ft9 hrs ago
Fish River near Fort Kent, MaineUSGS gauge252 ft³/s3.27 ft8 hrs ago
Grand Lake Stream at Grand Lake Stream, MaineUSGS gauge282 ft³/s2.33 ft9 hrs ago
Hardwood Brook below Glidden Brk nr Caribou, MaineUSGS gauge2 ft³/s1.23 ft9 hrs ago
Kenduskeag Stream near Bangor, MaineUSGS gauge4 ft³/s2.53 ft9 hrs ago
Kennebec River at Bingham, MaineUSGS gauge1,560 ft³/s7.31 ft9 hrs ago
Kennebec River at Calumet Bridge at Augusta, MaineUSGS gauge-0.38 ft8 hrs ago
Kennebec River at Gardiner, MaineUSGS gauge0.11 ft9 hrs ago
Kennebec River at Hallowell, MaineUSGS gauge-0.06 ft8 hrs ago
Kennebec River at North Sidney, MaineUSGS gauge1,840 ft³/s5.19 ft9 hrs ago
Kennebec River at The Forks, MaineUSGS gauge445 ft³/s1.92 ft8 hrs ago
Kennebec River near Madison, MaineUSGS gauge1,810 ft³/s3.23 ft8 hrs ago
Kennebunk River near Kennebunk, MaineUSGS gauge2 ft³/s2.02 ft9 hrs ago
Kingsbury Stream at Abbot Village, MaineUSGS gauge8 ft³/s5.25 ft9 hrs ago
Libby Brook near Northfield, MaineUSGS gauge3 ft³/s1.51 ft9 hrs ago
Little Androscoggin River near South Paris, MaineUSGS gauge9 ft³/s1.95 ft9 hrs ago
Little Madawaska River at Caribou, MaineUSGS gauge62 ft³/s3.29 ft9 hrs ago
Mattawamkeag River near Mattawamkeag, MaineUSGS gauge70 ft³/s3.61 ft9 hrs ago
Meduxnekeag R above S Br Medux. R nr Houlton, MEUSGS gauge6 ft³/s2.25 ft8 hrs ago
Mousam River at Route 4 near Sanford, MaineUSGS gauge19 ft³/s1.01 ft9 hrs ago
Mousam River near West Kennebunk, MaineUSGS gauge24 ft³/s0.62 ft8 hrs ago
Narraguagus River at Cherryfield, MaineUSGS gauge30 ft³/s7.08 ft9 hrs ago
North Branch Penobscot River nr Pittston Farm, MEUSGS gauge68 ft³/s4.02 ft8 hrs ago
Old Stream near Wesley, MaineUSGS gauge3 ft³/s3.63 ft9 hrs ago
Otter Creek near Bar Harbor, MaineUSGS gauge0 ft³/s1.49 ft9 hrs ago
Pearce Brook at Route 1 at Houlton, MaineUSGS gauge0 ft³/s1.62 ft9 hrs ago
Penobscot River at Bangor, MaineUSGS gauge4.80 ft9 hrs ago
Penobscot River at Eddington, MaineUSGS gauge2.25 ft9 hrs ago
Penobscot River at West Enfield, MaineUSGS gauge3,620 ft³/s1.81 ft9 hrs ago

Station links open the official monitoring page with charts and history.

About these readings

Readings come from USGS real-time monitoring stations — 7 sensors are currently reporting a water temperature in Maine. Each figure is a point measurement at one sensor, usually on a river or stream — it doesn’t describe a whole lake or shoreline, and coverage varies across the state. Data is provisional and can be revised by the USGS.

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Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.