What is the average water temperature in Maryland?

The current average water temperature across Maryland's monitored water bodies is 63.4°F.

🌡️

Maryland Water Temperatures

Q: What is the warmest lake in Maryland today?

Beaverdam Creek Near Cheverly, Md at 76.1°F.

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

With Data

63.4°F

State Avg

76.1°F

Warmest

76.1°F

Warmest

Beaverdam Creek Near Cheverly, Md

63.4°F

State Average

100 water bodies

41.4°F

Coldest

Meetinghouse Branch At Camp Springs, Md

🏊

Swimming Conditions

🚫 Too cold for most swimmers

Based on avg 63.4°F

🎣

Fishing Conditions

🎣 Good — trout, walleye, bass

Based on avg 63.4°F

Maryland — Ranked by Temperature

30 with data

#	Water Body	°F	°C	Condition	🏊	Date
1	Beaverdam Creek Near Cheverly, Md River	76.1°	24.5°	☀️ Warm	✅ Good	Jul 17
2	Potomac River Near Wash, Dc Little Falls Pump Sta River	75.6°	24.2°	☀️ Warm	✅ Good	Sep 30
3	Northwest Branch Anacostia River At Brentwood, Md River	73.6°	23.1°	🌤️ Comfortable	✅ Good	Jun 4
4	Mattawoman Creek Near Pomonkey, Md River	72.9°	22.7°	🌤️ Comfortable	✅ Good	Jun 26
5	Susquehanna River Near Darlington, Md River	72.9°	22.7°	🌤️ Comfortable	✅ Good	Jun 4
6	Monocacy River Near Dickerson, Md River	72.9°	22.7°	🌤️ Comfortable	✅ Good	Jun 4
7	Potomac River At Point Of Rocks, Md River	71.1°	21.7°	🌤️ Comfortable	⚠️ Brisk	Jun 4
8	Northeast Branch Anacostia River At Riverdale, Md River	70.9°	21.6°	🌤️ Comfortable	⚠️ Brisk	Jun 4
9	Patuxent R At Gov Bridge Natural Area Nr Bowie Md Lake	70.7°	21.5°	🌤️ Comfortable	⚠️ Brisk	Jun 4
10	Patuxent River Below Brighton Dam Near Brighton Md River	69.8°	21°	🌤️ Comfortable	⚠️ Brisk	Oct 9
11	Herring Run At Sinclair Lane At Baltimore, Md Lake	69.1°	20.6°	🌤️ Comfortable	⚠️ Brisk	Oct 3
12	Sams Creek At Mckinstrys Mill, Md River	67.1°	19.5°	🌤️ Comfortable	⚠️ Brisk	Jun 4
13	Scotts Level Branch At Rockdale, Md Lake	66.2°	19°	🌤️ Comfortable	⚠️ Brisk	Jun 3
14	Choptank River Near Greensboro, Md River	65.7°	18.7°	🌤️ Comfortable	⚠️ Brisk	May 9
15	Paint Branch Near College Park, Md Lake	65.7°	18.7°	🌤️ Comfortable	⚠️ Brisk	Jun 4
16	Deep Creek Lake Near Thayerville, Md River	65.5°	18.6°	🌤️ Comfortable	⚠️ Brisk	Jun 4
17	Plumtree Run Near Bel Air, Md Lake	65.3°	18.5°	🌤️ Comfortable	⚠️ Brisk	Jun 4
18	Foster Branch Near Joppatowne, Md Lake	65.1°	18.4°	🌤️ Comfortable	⚠️ Brisk	Jun 4
19	Youghiogheny River At Friendsville, Md River	63.7°	17.6°	🌊 Cool	🚫 Cold	Jun 4
20	Carroll Creek Near Frederick, Md River	60.8°	16°	🌊 Cool	🚫 Cold	Mar 30
21	Sligo Creek Near Takoma Park, Md River	59°	15°	🌊 Cool	🚫 Cold	Apr 15
22	Savage River Near Barton, Md River	57.7°	14.3°	🌊 Cool	🚫 Cold	Jun 4
23	Moores Run At Radecke Ave At Baltimore, Md Lake	56.8°	13.8°	🌊 Cool	🚫 Cold	Oct 10
24	North Branch Potomac River At Luke, Md River	56.3°	13.5°	🌊 Cool	🚫 Cold	Sep 29
25	Savage Riv Bl Savage Riv Dam Near Bloomington, Md Reservoir	55.2°	12.9°	🌊 Cool	🚫 Cold	Jun 4
26	Chesterville Branch Near Crumpton, Md Lake	51.8°	11°	❄️ Cold	⛔ Very cold	Nov 3
27	Piscataway Creek Trib At Joint Base Andrews, Md River	51.6°	10.9°	❄️ Cold	⛔ Very cold	Apr 9
28	Gunpowder Falls Near Parkton, Md Lake	50.4°	10.2°	❄️ Cold	⛔ Very cold	Jun 4
29	Piscataway Creek At Woodyard, Md River	41.5°	5.3°	🧊 Very Cold	⛔ Very cold	Dec 7
30	Meetinghouse Branch At Camp Springs, Md Lake	41.4°	5.2°	🧊 Very Cold	⛔ Very cold	Dec 7
31	Dead Run Tributary Near Woodlawn, Md Lake	—	—	—	—	—
32	Zekiah Swamp Run Near Newtown, Md Lake	—	—	—	—	—
33	Potomac River At Edwards Ferry Near Poolesville,Md River	—	—	—	—	—
34	Patuxent River Near Unity, Md River	—	—	—	—	—
35	Youghiogheny River Near Mchenry, Md River	—	—	—	—	—
36	Little Patuxent River At Savage, Md River	—	—	—	—	—
37	Octoraro Creek Near Richardsmere, Md River	—	—	—	—	—
38	Winters Run Near Benson, Md Lake	—	—	—	—	—
39	Tonoloway Creek Near Hancock, Md River	—	—	—	—	—
40	Beetree Run At Bentley Springs, Md Lake	—	—	—	—	—
41	Monocacy River At Bridgeport, Md River	—	—	—	—	—
42	Long Quarter Branch At Lutherville, Md Lake	—	—	—	—	—
43	Bennett Creek At Park Mills, Md River	—	—	—	—	—
44	West Branch Herring Run At Idlewylde, Md Lake	—	—	—	—	—
45	Seneca Creek At Dawsonville, Md River	—	—	—	—	—
46	Patapsco River Near Elkridge, Md River	—	—	—	—	—
47	Pearce Creek At Crystal Beach, Md Lake	—	—	—	—	—
48	Unnamed Ditch On Wilson Pt Rd At Middle River, Md River	—	—	—	—	—
49	Jones Falls At Sorrento, Md Lake	—	—	—	—	—
50	North Glade Run Near Swanton, Md Lake	—	—	—	—	—
51	Nassawango Creek Near Snow Hill, Md River	—	—	—	—	—
52	L Pax Riv Trib Above Wilde Lake At Columbia, Md Lake	—	—	—	—	—
53	Morgan Creek Near Kennedyville, Md River	—	—	—	—	—
54	North Branch Potomac River At Kitzmiller, Md River	—	—	—	—	—
55	Bynum Run At Bel Air, Md Lake	—	—	—	—	—
56	Potomac River At Paw Paw, Wv River	—	—	—	—	—
57	Grave Run Near Beckleysville, Md Lake	—	—	—	—	—
58	Antietam Creek Near Sharpsburg, Md River	—	—	—	—	—
59	Pond Branch At Oregon Ridge, Md Lake	—	—	—	—	—
60	Linganore Creek At Linganore Rd Near Frederick, Md River	—	—	—	—	—
61	Whitemarsh Run Near Fullerton, Md Lake	—	—	—	—	—
62	Cabin Branch Near Boyds, Md Lake	—	—	—	—	—
63	Morgan Run Near Louisville, Md Lake	—	—	—	—	—
64	Gwynns Falls At Villa Nova, Md Lake	—	—	—	—	—
65	Piscataway Creek At Piscataway, Md River	—	—	—	—	—
66	St Marys Lake Near Callaway, Md Lake	—	—	—	—	—
67	Dead Run Tributary At Woodlawn, Md Lake	—	—	—	—	—
68	St Marys River At Great Mills, Md River	—	—	—	—	—
69	Arrowhead Run At Thayerville, Md Lake	—	—	—	—	—
70	Bear Creek At Friendsville, Md River	—	—	—	—	—
71	Sallie Harris Creek Near Carmichael, Md River	—	—	—	—	—
72	Deer Creek At Rocks, Md River	—	—	—	—	—
73	Wills Creek Near Cumberland, Md River	—	—	—	—	—
74	Conococheague Creek At Fairview, Md River	—	—	—	—	—
75	Gunpowder Falls At Glencoe, Md Lake	—	—	—	—	—
76	Long Green Creek At Glen Arm, Md River	—	—	—	—	—
77	Little Seneca Creek Tributary Near Clarksburg, Md River	—	—	—	—	—
78	Cranberry Branch Near Westminster, Md Lake	—	—	—	—	—
79	Potomac River, Adjusted, Near Wash, Dc River	—	—	—	—	—
80	Gwynns Falls Near Delight, Md Lake	—	—	—	—	—
81	Potomac River At Burkittsville Rd At Brunswick, Md River	—	—	—	—	—
82	South Fork Jabez Branch At Millersville, Md Lake	—	—	—	—	—
83	Cherry Creek At State Park Road Near Mchenry, Md River	—	—	—	—	—
84	Chicamacomico River Near Salem, Md River	—	—	—	—	—
85	Little Patuxent River At Guilford, Md River	—	—	—	—	—
86	Susquehanna River At Conowingo, Md River	—	—	—	—	—
87	James Run Near Belcamp, Md Lake	—	—	—	—	—
88	Potomac River At Hancock, Md River	—	—	—	—	—
89	Beaverdam Run At Cockeysville, Md Reservoir	—	—	—	—	—
90	Soper Branch At Hyattstown, Md Lake	—	—	—	—	—
91	Honeygo Run Near White Marsh, Md Lake	—	—	—	—	—
92	Tenmile Creek Near Boyds, Md River	—	—	—	—	—
93	Patapsco River Near Catonsville, Md River	—	—	—	—	—
94	Northwest Branch Anacostia River Nr Colesville, Md River	—	—	—	—	—
95	Dead Run At Woodlawn, Md Lake	—	—	—	—	—
96	Ches Bay At Mouth Of Susq R At Havre De Grace, Md Lake	—	—	—	—	—
97	Gwynns Falls At Washington Blvd At Baltimore, Md Lake	—	—	—	—	—
98	Youghiogheny River Near Swallow Falls Park, Md River	—	—	—	—	—
99	Pocomoke River Near Willards, Md River	—	—	—	—	—
100	Patuxent River Near Laurel, Md River	—	—	—	—	—

Beaverdam Creek Near Cheverly, Md River

76.1°F

☀️ Warm

Potomac River Near Wash, Dc Little Falls Pump Sta River

75.6°F

☀️ Warm

Northwest Branch Anacostia River At Brentwood, Md River

73.6°F

🌤️ Comfortable

Mattawoman Creek Near Pomonkey, Md River

72.9°F

🌤️ Comfortable

Susquehanna River Near Darlington, Md River

72.9°F

🌤️ Comfortable

Monocacy River Near Dickerson, Md River

72.9°F

🌤️ Comfortable

Potomac River At Point Of Rocks, Md River

71.1°F

🌤️ Comfortable

Northeast Branch Anacostia River At Riverdale, Md River

70.9°F

🌤️ Comfortable

Patuxent R At Gov Bridge Natural Area Nr Bowie Md Lake

70.7°F

🌤️ Comfortable

Patuxent River Below Brighton Dam Near Brighton Md River

69.8°F

🌤️ Comfortable

Herring Run At Sinclair Lane At Baltimore, Md Lake

69.1°F

🌤️ Comfortable

Sams Creek At Mckinstrys Mill, Md River

67.1°F

🌤️ Comfortable

Scotts Level Branch At Rockdale, Md Lake

66.2°F

🌤️ Comfortable

Choptank River Near Greensboro, Md River

65.7°F

🌤️ Comfortable

Paint Branch Near College Park, Md Lake

65.7°F

🌤️ Comfortable

Deep Creek Lake Near Thayerville, Md River

65.5°F

🌤️ Comfortable

Plumtree Run Near Bel Air, Md Lake

65.3°F

🌤️ Comfortable

Foster Branch Near Joppatowne, Md Lake

65.1°F

🌤️ Comfortable

Youghiogheny River At Friendsville, Md River

63.7°F

🌊 Cool

Carroll Creek Near Frederick, Md River

60.8°F

🌊 Cool

More Maryland Resources

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

❓ Maryland Water Temperature FAQ

What is the warmest lake in Maryland today?

Based on our latest USGS data, Beaverdam Creek Near Cheverly, Md is currently the warmest water body in Maryland at 76.1°F.

Which Maryland lakes are good for swimming right now?

Lakes with water temperatures above 72°F are generally comfortable for swimming. Currently, Maryland's average water temperature is 63.4°F — check individual lakes above for specific conditions.

What is the best water temperature for fishing in Maryland?

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 Maryland — 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.