What is the average water temperature in Massachusetts?

The current average water temperature across Massachusetts's monitored water bodies is 64.6°F.

🌡️

Massachusetts Water Temperatures

Q: What is the warmest lake in Massachusetts today?

Hobbs Bk Below Cambridge Res Nr Kendall Green, Ma at 77.4°F.

Current lake & river temperatures in Massachusetts — updated daily from USGS sensors.

With Data

64.6°F

State Avg

77.4°F

Warmest

77.4°F

Warmest

Hobbs Bk Below Cambridge Res Nr Kendall Green, Ma

64.6°F

State Average

100 water bodies

42.6°F

Coldest

Green River Near Colrain, Ma

🏊

Swimming Conditions

🚫 Too cold for most swimmers

Based on avg 64.6°F

🎣

Fishing Conditions

🎣 Good — trout, walleye, bass

Based on avg 64.6°F

Massachusetts — Ranked by Temperature

18 with data

#	Water Body	°F	°C	Condition	🏊	Date
1	Hobbs Bk Below Cambridge Res Nr Kendall Green, Ma Lake	77.4°	25.2°	☀️ Warm	✅ Good	Jul 27
2	Fresh Pond In Gate House At Cambridge, Ma Lake	77.2°	25.1°	☀️ Warm	✅ Good	Jul 26
3	Stony Brook At Rt 20 At Waltham, Ma River	73.4°	23°	🌤️ Comfortable	✅ Good	Jul 26
4	Ware River At Intake Works Near Barre, Ma River	71.2°	21.8°	🌤️ Comfortable	⚠️ Brisk	Jul 26
5	Stony Brook Unnamed Trib 2 Nr Weston Station River	69.3°	20.7°	🌤️ Comfortable	⚠️ Brisk	Jul 26
6	Stillwater River Near Sterling, Ma River	67.1°	19.5°	🌤️ Comfortable	⚠️ Brisk	Jul 27
7	Cambridge Res., Unnamed Trib 1, Nr Lexington, Ma Lake	67.1°	19.5°	🌤️ Comfortable	⚠️ Brisk	Jul 25
8	Quinapoxet River At Canada Mills Near Holden, Ma River	66.9°	19.4°	🌤️ Comfortable	⚠️ Brisk	Jul 25
9	Cambridge Res., Unnamed Trib 3, Nr Lexington, Ma Lake	64.6°	18.1°	🌊 Cool	🚫 Cold	Jul 26
10	Stony Brook At Viles Street, Near Weston, Ma River	63.9°	17.7°	🌊 Cool	🚫 Cold	Jul 26
11	Cambridge Res., Unnamed Trib 2, Nr Lexington, Ma Lake	62.1°	16.7°	🌊 Cool	🚫 Cold	Jul 27
12	Cold River At Florida, Ma River	61.3°	16.3°	🌊 Cool	🚫 Cold	Jun 30
13	Hobbs Brook At Mill St Nr Lincoln, Ma River	60.8°	16°	🌊 Cool	🚫 Cold	Jul 26
14	Stony Brook Res., Unnamed Trib 1, Near Weston, Ma River	60.1°	15.6°	🌊 Cool	🚫 Cold	Jul 27
15	Stony Brook Reservoir At Dam Near Waltham, Ma River	59.9°	15.5°	🌊 Cool	🚫 Cold	Oct 17
16	Gates Brook Near West Boylston, Ma River	59°	15°	🌊 Cool	🚫 Cold	Jul 27
17	Stony Brook, Unnamed Tributary 1, Near Waltham, Ma River	59°	15°	🌊 Cool	🚫 Cold	Jul 27
18	Green River Near Colrain, Ma River	42.6°	5.9°	🧊 Very Cold	⛔ Very cold	Apr 16
19	Merrimack River At Lawrence, Ma River	—	—	—	—	—
20	Segreganset River Near Dighton, Ma River	—	—	—	—	—
21	Quashnet R. 0.6 Mi Ds Of Johns Pond Nr Mashpee, Ma Lake	—	—	—	—	—
22	French River At Webster, Ma River	—	—	—	—	—
23	Nashua River, Water Street Bridge, At Clinton, Ma River	—	—	—	—	—
24	Concord R Below R Meadow Brook, At Lowell, Ma River	—	—	—	—	—
25	Fort River Near Amherst, Ma River	—	—	—	—	—
26	Aberjona River At Winchester, Ma River	—	—	—	—	—
27	West Branch Swift River Near Shutesbury, Ma River	—	—	—	—	—
28	West Branch Westfield River At Huntington, Ma River	—	—	—	—	—
29	North Branch Hoosic River At North Adams, Ma River	—	—	—	—	—
30	Old Swamp River Near South Weymouth, Ma River	—	—	—	—	—
31	Quashnet River At Waquoit Village, Ma River	—	—	—	—	—
32	Mill River At Spring Street At Taunton, Ma River	—	—	—	—	—
33	Town Brook At Diversion Tunnel At Quincy, Ma River	—	—	—	—	—
34	Quinebaug R Bl Westville Dam Nr Southbridge, Ma Reservoir	—	—	—	—	—
35	East Branch Tully River Near Athol, Ma River	—	—	—	—	—
36	Sudbury River At Ashland, Ma River	—	—	—	—	—
37	Ipswich River At South Middleton, Ma River	—	—	—	—	—
38	Ware River At Barre Plains, Ma River	—	—	—	—	—
39	Mother Brook At Dedham, Ma River	—	—	—	—	—
40	Westfield River At Knightville, Ma River	—	—	—	—	—
41	Green River Near Great Barrington, Ma River	—	—	—	—	—
42	Neponset River At Greenlodge St Near Canton, Ma River	—	—	—	—	—
43	Hawes Run, At Pondview Ave, Nr Hyannis, Ma Lake	—	—	—	—	—
44	Eel River At Rt 3A Near Plymouth, Ma River	—	—	—	—	—
45	Mattapoisett River Near Mattapoisett, Ma River	—	—	—	—	—
46	Muddy River At Brookline, Ma River	—	—	—	—	—
47	Quinsigamond River At North Grafton, Ma River	—	—	—	—	—
48	Housatonic River Near Great Barrington, Ma River	—	—	—	—	—
49	Millers River Near Winchendon, Ma River	—	—	—	—	—
50	Nashua River At East Pepperell, Ma River	—	—	—	—	—
51	North River At Shattuckville, Ma River	—	—	—	—	—
52	Shawsheen River Near Wilmington, Ma River	—	—	—	—	—
53	Connecticut R At I-391 Bridge At Holyoke, Ma Lake	—	—	—	—	—
54	Charles River At Medway, Ma River	—	—	—	—	—
55	Sevenmile River Near Spencer, Ma River	—	—	—	—	—
56	West Branch Farmington River Near New Boston, Ma River	—	—	—	—	—
57	Charles River At Waltham, Ma River	—	—	—	—	—
58	Green River At Williamstown, Ma River	—	—	—	—	—
59	Weir River At Leavitt Street At Hingham, Ma River	—	—	—	—	—
60	Lake Cochituate At Framingham, Ma Lake	—	—	—	—	—
61	Threemile River At North Dighton, Ma River	—	—	—	—	—
62	Marstons Mills Rv, Ds Out. Of Bog, Mars. Mills, Ma Lake	—	—	—	—	—
63	Little River Near Oxford, Ma River	—	—	—	—	—
64	Millers River At Erving, Ma River	—	—	—	—	—
65	Sudbury River At Saxonville, Ma River	—	—	—	—	—
66	Avery Brook Nr Whately, Ma River	—	—	—	—	—
67	Saugus River At Saugus Ironworks At Saugus, Ma River	—	—	—	—	—
68	East Branch Swift River Near Hardwick, Ma River	—	—	—	—	—
69	Walker Brook Near Becket Center, Ma River	—	—	—	—	—
70	Hoosic River At Adams, Ma River	—	—	—	—	—
71	Town Brook At Quincy, Ma River	—	—	—	—	—
72	Herring River At North Harwich, Ma River	—	—	—	—	—
73	Taunton River Near Bridgewater, Ma River	—	—	—	—	—
74	Charles River, New Charles River Dam At Boston, Ma River	—	—	—	—	—
75	Quinebaug R Bl E Brimfield Dam At Fiskdale, Ma Reservoir	—	—	—	—	—
76	North Nashua River Near Leominster, Ma River	—	—	—	—	—
77	Otter River At Otter River, Ma River	—	—	—	—	—
78	Nashoba Brook Near Acton, Ma River	—	—	—	—	—
79	Deerfield River Near West Deerfield, Ma River	—	—	—	—	—
80	Parker River At Byfield, Ma River	—	—	—	—	—
81	Charles River At Dover, Ma River	—	—	—	—	—
82	Chicopee River At Indian Orchard, Ma River	—	—	—	—	—
83	Housatonic River At Lenoxdale, Ma River	—	—	—	—	—
84	East Branch Neponset River At Canton, Ma River	—	—	—	—	—
85	Herring River Near Wellfleet, Ma River	—	—	—	—	—
86	Jones River At Kingston, Ma River	—	—	—	—	—
87	Mystic R At Amelia Earhart Dam Nr Somerville, Ma Reservoir	—	—	—	—	—
88	Blackstone River, W. Main St., At Millbury, Ma River	—	—	—	—	—
89	Blackstone River At Northbridge, Ma River	—	—	—	—	—
90	Connecticut River Near Northfield, Ma River	—	—	—	—	—
91	Squannacook River Near West Groton, Ma River	—	—	—	—	—
92	Deerfield River At Charlemont, Ma River	—	—	—	—	—
93	Merrimack River Bl Concord River At Lowell, Ma River	—	—	—	—	—
94	Mill River At Northampton, Ma River	—	—	—	—	—
95	Alewife Brook Near Arlington, Ma River	—	—	—	—	—
96	Swift River At West Ware, Ma River	—	—	—	—	—
97	Westfield River Near Westfield, Ma River	—	—	—	—	—
98	Hoosic River Near Williamstown, Ma River	—	—	—	—	—
99	Whitmans Pond Fish Ladder At East Weymouth, Ma Lake	—	—	—	—	—
100	Weweantic River At South Wareham, Ma River	—	—	—	—	—

Hobbs Bk Below Cambridge Res Nr Kendall Green, Ma Lake

77.4°F

☀️ Warm

Fresh Pond In Gate House At Cambridge, Ma Lake

77.2°F

☀️ Warm

Stony Brook At Rt 20 At Waltham, Ma River

73.4°F

🌤️ Comfortable

Ware River At Intake Works Near Barre, Ma River

71.2°F

🌤️ Comfortable

Stony Brook Unnamed Trib 2 Nr Weston Station River

69.3°F

🌤️ Comfortable

Stillwater River Near Sterling, Ma River

67.1°F

🌤️ Comfortable

Cambridge Res., Unnamed Trib 1, Nr Lexington, Ma Lake

67.1°F

🌤️ Comfortable

Quinapoxet River At Canada Mills Near Holden, Ma River

66.9°F

🌤️ Comfortable

Cambridge Res., Unnamed Trib 3, Nr Lexington, Ma Lake

64.6°F

🌊 Cool

Stony Brook At Viles Street, Near Weston, Ma River

63.9°F

🌊 Cool

Cambridge Res., Unnamed Trib 2, Nr Lexington, Ma Lake

62.1°F

🌊 Cool

Cold River At Florida, Ma River

61.3°F

🌊 Cool

Hobbs Brook At Mill St Nr Lincoln, Ma River

60.8°F

🌊 Cool

Stony Brook Res., Unnamed Trib 1, Near Weston, Ma River

60.1°F

🌊 Cool

Stony Brook Reservoir At Dam Near Waltham, Ma River

59.9°F

🌊 Cool

Gates Brook Near West Boylston, Ma River

59°F

🌊 Cool

Stony Brook, Unnamed Tributary 1, Near Waltham, Ma River

59°F

🌊 Cool

Green River Near Colrain, Ma River

42.6°F

🧊 Very Cold

Merrimack River At Lawrence, Ma River

—

Segreganset River Near Dighton, Ma River

—

More Massachusetts Resources

🗺️ Massachusetts Water Levels 🎣 Weekly Fishing Report ⛵ Boat Ramp Status 🌵 Drought Conditions 🌡️ All States

❓ Massachusetts Water Temperature FAQ

What is the warmest lake in Massachusetts today?

Based on our latest USGS data, Hobbs Bk Below Cambridge Res Nr Kendall Green, Ma is currently the warmest water body in Massachusetts at 77.4°F.

Which Massachusetts lakes are good for swimming right now?

Lakes with water temperatures above 72°F are generally comfortable for swimming. Currently, Massachusetts's average water temperature is 64.6°F — check individual lakes above for specific conditions.

What is the best water temperature for fishing in Massachusetts?

The optimal temperature range depends on your target species. For bass fishing, look for water bodies between 65–75°F. For trout, target the coldest water bodies in Massachusetts — typically 50–65°F. Use the table above to identify which lakes are in the ideal range for your target species.

🔬 Data Methodology & Sources

Water temperature readings on this site are collected from USGS (United States Geological Survey) monitoring stations installed at lakes, rivers, and reservoirs across the country. Sensors measure water surface temperature in Celsius, which is converted to Fahrenheit for display. Data is retrieved and stored daily. Temperatures shown reflect the most recent available sensor reading for each water body, typically from the past 1–30 days depending on station reporting frequency.

⚠️ Water temperatures can vary significantly across a water body due to depth, currents, and time of day. Sensor readings represent conditions at the monitoring station location. Always exercise caution when swimming and consult local authorities for official safety advisories.