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Water temperature in New Hampshire

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

Warmest sensor reading right now

71°F22°C

USGS gauge LAMPREY RIVER AT LANGFORD ROAD, AT RAYMOND, NH · as of 8 hrs ago

All reporting stations (warmest 50 of 57)

StationWater tempStreamflowGage heightObserved
LAMPREY RIVER AT LANGFORD ROAD, AT RAYMOND, NHUSGS gauge71°F22°C7 ft³/s1.79 ft8 hrs ago
SOUHEGAN RIVER (SITE WLR-1) NEAR MILFORD, NHUSGS gauge69°F21°C33 ft³/s3.28 ft8 hrs ago
SOUTH BRANCH PISCATAQUOG RIVER NEAR GOFFSTOWN, NHUSGS gauge68°F20°C15 ft³/s3.05 ft8 hrs ago
ASHUELOT RIVER NEAR GILSUM, NHUSGS gauge66°F19°C12 ft³/s1.56 ft9 hrs ago
COLD RIVER AT HIGH STREET, AT ALSTEAD, NHUSGS gauge66°F19°C8 ft³/s1.49 ft8 hrs ago
ISINGLASS R AT ROCHESTER NECK RD, NR DOVER, NHUSGS gauge64°F18°C4 ft³/s2.61 ft9 hrs ago
CONNECTICUT RIVER AT NORTH STRATFORD, NHUSGS gauge63°F17°C501 ft³/s3.27 ft9 hrs ago
CONNECTICUT R BELOW INDIAN STREAM NR PITTSBURG, NHUSGS gauge60°F16°C328 ft³/s2.75 ft9 hrs ago
SACO RIVER AT RIVER STREET, AT BARTLETT, NHUSGS gauge60°F16°C61 ft³/s2.64 ft8 hrs ago
AMMONOOSUC RIVER AT BETHLEHEM JUNCTION, NHUSGS gauge61 ft³/s1.38 ft9 hrs ago
Androscoggin River at Errol, NHUSGS gauge1,200 ft³/s1.95 ft8 hrs ago
Androscoggin River below Bog Brook at Cambridge NHUSGS gauge1,210 ft³/s1.37 ft8 hrs ago
Androscoggin River near Gorham, NHUSGS gauge1,300 ft³/s2.98 ft9 hrs ago
ASHUELOT RIVER ABOVE THE BRANCH, AT KEENE, NHUSGS gauge64.57 ft9 hrs ago
ASHUELOT RIVER AT HINSDALE, NHUSGS gauge134 ft³/s3.26 ft8 hrs ago
ASHUELOT RIVER AT WEST SWANZEY, NHUSGS gauge94 ft³/s5.30 ft8 hrs ago
ASHUELOT RIVER BELOW SURRY MT DAM, NEAR KEENE, NHUSGS gauge13 ft³/s4.67 ft9 hrs ago
BAKER RIVER NEAR RUMNEY, NHUSGS gauge27 ft³/s0.30 ft9 hrs ago
BEARCAMP RIVER AT SOUTH TAMWORTH, NHUSGS gauge10 ft³/s3.23 ft9 hrs ago
BEAVER BROOK AT NORTH PELHAM, NHUSGS gauge4 ft³/s5.55 ft9 hrs ago
BLACKWATER RIVER NEAR WEBSTER, NHUSGS gauge23 ft³/s2.01 ft9 hrs ago
COCHECO RIVER NEAR ROCHESTER, NHUSGS gauge7 ft³/s2.48 ft9 hrs ago
COCKERMOUTH RIVER BELOW HARDY BROOK, AT GROTON, NHUSGS gauge2 ft³/s1.13 ft9 hrs ago
CONNECTICUT RIVER AT NORTH WALPOLE, NHUSGS gauge2,620 ft³/s6.70 ft9 hrs ago
CONNECTICUT RIVER AT WEST LEBANON, NHUSGS gauge2,370 ft³/s4.99 ft9 hrs ago
CONNECTICUT RIVER NEAR DALTON, NHUSGS gauge659 ft³/s7.33 ft9 hrs ago
CONTOOCOOK R BL HOPKINTON DAM AT W HOPKINTON, NHUSGS gauge110 ft³/s1.53 ft9 hrs ago
CONTOOCOOK RIVER AT PETERBOROUGH, NHUSGS gauge20 ft³/s1.23 ft9 hrs ago
CONTOOCOOK RIVER NEAR HENNIKER, NHUSGS gauge101 ft³/s4.78 ft9 hrs ago
Diamond River near Wentworth Location, NHUSGS gauge27 ft³/s1.72 ft9 hrs ago
EAST BRANCH PEMIGEWASSET RIVER AT LINCOLN, NHUSGS gauge53 ft³/s3.53 ft9 hrs ago
EXETER RIVER AT HAIGH ROAD, NEAR BRENTWOOD, NHUSGS gauge5 ft³/s3.95 ft9 hrs ago
EXETER RIVER AT ODELL ROAD, NEAR SANDOWN, NHUSGS gauge1 ft³/s0.38 ft9 hrs ago
LAMPREY RIVER NEAR NEWMARKET, NHUSGS gauge15 ft³/s0.78 ft9 hrs ago
MERRIMACK R NR GOFFS FALLS, BELOW MANCHESTER, NHUSGS gauge497 ft³/s2.34 ft9 hrs ago
MERRIMACK RIVER AT CONCORD, NHUSGS gauge2.76 ft9 hrs ago
MERRIMACK RIVER AT FRANKLIN JUNCTION, NHUSGS gauge778 ft³/s4.09 ft9 hrs ago
MERRIMACK RIVER AT NASHUA, NHUSGS gauge4.55 ft9 hrs ago
NUBANUSIT BK BLW MACDOWELL DAM NR PETERBOROUGH NHUSGS gauge2.54 ft9 hrs ago
OYSTER RIVER NEAR DURHAM, NHUSGS gauge0 ft³/s0.59 ft9 hrs ago
Peabody River at Gorham, New HampshireUSGS gauge27 ft³/s1.97 ft8 hrs ago
PEMIGEWASSET RIVER AT PLYMOUTH, NHUSGS gauge187 ft³/s0.59 ft9 hrs ago
PEMIGEWASSET RIVER AT WOODSTOCK, NHUSGS gauge83 ft³/s2.21 ft9 hrs ago
PISCATAQUOG RIVER BL EVERETT DAM, NR E WEARE, NHUSGS gauge5 ft³/s4.54 ft9 hrs ago
PISCATAQUOG RIVER NEAR GOFFSTOWN, NHUSGS gauge27 ft³/s3.17 ft9 hrs ago
Saco River near Conway, NHUSGS gauge205 ft³/s2.41 ft8 hrs ago
SMITH RIVER NEAR BRISTOL, NHUSGS gauge13 ft³/s1.44 ft9 hrs ago
SOUHEGAN RIVER AT MERRIMACK, NHUSGS gauge62 ft³/s2.45 ft9 hrs ago
SPICKET RIVER AT NORTH SALEM, NHUSGS gauge0 ft³/s2.01 ft9 hrs ago
SPICKET RIVER NEAR METHUEN, MAUSGS gauge9 ft³/s3.51 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 — 9 sensors are currently reporting a water temperature in New Hampshire. 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.