What is the average water temperature in Wyoming?

The current average water temperature across Wyoming's monitored water bodies is 61.4°F.

🌡️

Wyoming Water Temperatures

Q: What is the warmest lake in Wyoming today?

Boiling River At Mammoth,Ynp at 128.8°F.

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

With Data

61.4°F

State Avg

128.8°F

Warmest

128.8°F

Warmest

Boiling River At Mammoth,Ynp

61.4°F

State Average

100 water bodies

32°F

Coldest

Big Sandy River At Gasson Bridge, Near Eden, Wy

🏊

Swimming Conditions

🚫 Too cold for most swimmers

Based on avg 61.4°F

🎣

Fishing Conditions

🎣 Good — trout, walleye, bass

Based on avg 61.4°F

Wyoming — Ranked by Temperature

46 with data

#	Water Body	°F	°C	Condition	🏊	Date
1	Boiling River At Mammoth,Ynp River	128.8°	53.8°	🔥 Hot	🏊 Excellent	Jul 26
2	Tantalus Creek At Norris Junction, Ynp River	87.1°	30.6°	🔥 Hot	🏊 Excellent	Jul 26
3	Wind River Ab Boysen Reservoir, Nr Shoshoni, Wy River	79.2°	26.2°	☀️ Warm	✅ Good	Jul 26
4	Firehole River Near West Yellowstone Mt River	78.1°	25.6°	☀️ Warm	✅ Good	Jul 26
5	Muddy Creek Near Shoshoni, Wy River	75.9°	24.4°	☀️ Warm	✅ Good	Jul 26
6	Muddy Creek Below Young Draw, Near Baggs, Wy River	75.7°	24.3°	☀️ Warm	✅ Good	Jul 26
7	Fivemile Creek Near Shoshoni, Wy River	72.9°	22.7°	🌤️ Comfortable	✅ Good	Jul 27
8	Gibbon River At Madison Jct, Ynp River	71.8°	22.1°	🌤️ Comfortable	⚠️ Brisk	Jul 26
9	Shoshone River Near Lovell, Wy River	71.1°	21.7°	🌤️ Comfortable	⚠️ Brisk	Jul 26
10	Flat Creek Below Cache Creek, Near Jackson, Wy River	70°	21.1°	🌤️ Comfortable	⚠️ Brisk	Jul 26
11	Snake River Near Moran, Wy River	68.2°	20.1°	🌤️ Comfortable	⚠️ Brisk	Jul 27
12	Lamar River Nr Tower Ranger Station Ynp River	67.3°	19.6°	🌤️ Comfortable	⚠️ Brisk	Jul 26
13	Snake River At Moose, Wy River	67.3°	19.6°	🌤️ Comfortable	⚠️ Brisk	Jul 26
14	Snake River Below Flat Creek, Near Jackson, Wy River	66.9°	19.4°	🌤️ Comfortable	⚠️ Brisk	Jul 27
15	Cheyenne River Near Spencer, Wy River	65.8°	18.8°	🌤️ Comfortable	⚠️ Brisk	Aug 23
16	Snake River Ab Jackson Lake At Flagg Ranch Wy River	65.8°	18.8°	🌤️ Comfortable	⚠️ Brisk	Jul 27
17	Bull Lake Creek Above Bull Lake, Wy River	65.5°	18.6°	🌤️ Comfortable	⚠️ Brisk	Jul 26
18	Pacific Creek At Moran, Wy River	65.5°	18.6°	🌤️ Comfortable	⚠️ Brisk	Jul 26
19	Firehole River At Old Faithful, Ynp River	65.3°	18.5°	🌤️ Comfortable	⚠️ Brisk	Jul 27
20	Gros Ventre River At Kelly, Wy River	64.9°	18.3°	🌊 Cool	🚫 Cold	Jul 26
21	Green River Near Green River, Wy River	64.4°	18°	🌊 Cool	🚫 Cold	Jul 26
22	Muddy Creek Above Olson Draw, Near Dad, Wy River	63.5°	17.5°	🌊 Cool	🚫 Cold	Jul 10
23	Pine Creek Above Fremont Lake, Wy River	63.3°	17.4°	🌊 Cool	🚫 Cold	Jul 26
24	Blackrock Cr Bl Split Rock Cr, Nr Moran, Wy Lake	62.8°	17.1°	🌊 Cool	🚫 Cold	Jul 26
25	Encampment River Ab Hog Park Cr, Nr Encampment, Wy River	62.2°	16.8°	🌊 Cool	🚫 Cold	Jul 26
26	Green River Below Fontenelle Reservoir, Wy River	61.9°	16.6°	🌊 Cool	🚫 Cold	Jul 27
27	Hoback River Near Jackson, Wy River	61.9°	16.6°	🌊 Cool	🚫 Cold	Jul 27
28	Fish Creek At Wilson, Wy River	61°	16.1°	🌊 Cool	🚫 Cold	Jul 27
29	Wind River At Riverton, Wy River	60.8°	16°	🌊 Cool	🚫 Cold	Sep 30
30	Gros Ventre R Ab Upper Slide Lk, Nr Kelly, Wy Lake	60.4°	15.8°	🌊 Cool	🚫 Cold	Aug 8
31	Buffalo Fork Ab Lava Creek, Nr Moran, Wy River	60.3°	15.7°	🌊 Cool	🚫 Cold	Jul 27
32	Wind River Near Kinnear, Wy River	54.7°	12.6°	❄️ Cold	⛔ Very cold	Jun 15
33	Cache Creek Near Jackson, Wy River	51.1°	10.6°	❄️ Cold	⛔ Very cold	Jul 26
34	Snake River Above Reservoir, Near Alpine, Wy River	50°	10°	❄️ Cold	⛔ Very cold	Jul 26
35	New Fork River Near Big Piney, Wy River	49.6°	9.8°	❄️ Cold	⛔ Very cold	Oct 8
36	Blacks Fork Above Smiths Fork, Near Lyman, Wy Lake	49.1°	9.5°	❄️ Cold	⛔ Very cold	Oct 2
37	Laramie River Near Fort Laramie, Wy River	46.9°	8.3°	❄️ Cold	⛔ Very cold	Oct 30
38	Salt River Above Reservoir, Near Etna, Wy River	46°	7.8°	❄️ Cold	⛔ Very cold	Sep 16
39	Little Powder River Ab Dry Creek, Near Weston, Wy River	45.9°	7.7°	❄️ Cold	⛔ Very cold	Oct 27
40	Greys River Above Reservoir, Near Alpine, Wy River	43.7°	6.5°	🧊 Very Cold	⛔ Very cold	Sep 29
41	Bear River Below Smiths Fork, Nr Cokeville, Wy River	43.7°	6.5°	🧊 Very Cold	⛔ Very cold	Oct 10
42	Yellowstone River At Yellowstone Lk Outlet Ynp River	43.5°	6.4°	🧊 Very Cold	⛔ Very cold	Sep 29
43	Belle Fourche River At Devils Tower, Wy River	40.8°	4.9°	🧊 Very Cold	⛔ Very cold	Oct 31
44	Blacks Fork Near Little America, Wy Lake	39.2°	4°	🧊 Very Cold	⛔ Very cold	Sep 30
45	Green River Near La Barge, Wy River	32.2°	0.1°	🧊 Very Cold	⛔ Very cold	Nov 28
46	Big Sandy River At Gasson Bridge, Near Eden, Wy River	32°	0°	🧊 Very Cold	⛔ Very cold	Sep 29
47	Rock Creek Ab King Canyon Canal, Nr Arlington, Wy River	—	—	—	—	—
48	Chapman Canal At State Line, Near Evanston, Wy River	—	—	—	—	—
49	Deer Creek In Canyon, Near Glenrock, Wy River	—	—	—	—	—
50	Blacks Fork Bl Little Blacks Fk At Fort Bridger Wy Lake	—	—	—	—	—
51	New Fork River Above Pine Cr, Nr Pinedale, Wy River	—	—	—	—	—
52	Muddy Creek Near Piedmont, Wy River	—	—	—	—	—
53	Little Snake River Near Dixon, Wy River	—	—	—	—	—
54	Sf L Wind Riv Ab Washakie Res, Nr Ft Washakie, Wy Lake	—	—	—	—	—
55	Bear River Below Reservoir, Near Woodruff, Ut River	—	—	—	—	—
56	North Fork Shoshone River At Wapiti, Wy River	—	—	—	—	—
57	Salt Creek Near Sussex, Wy River	—	—	—	—	—
58	Granite C Ab Granite C Supplemental, Nr Moose, Wy Lake	—	—	—	—	—
59	Encampment River At Mouth, Near Encampment, Wy River	—	—	—	—	—
60	Crow Creek Near Fairview, Wy River	—	—	—	—	—
61	North Platte River Below Pathfinder Reservoir, Wy River	—	—	—	—	—
62	Ward Ball Reservoir Outflow, Nr Boulder, Wy Reservoir	—	—	—	—	—
63	Green River At Warren Bridge, Near Daniel, Wy River	—	—	—	—	—
64	Blacks Fork Near Urie, Wy Lake	—	—	—	—	—
65	Henrys Fork Near Burntfork, Wy Lake	—	—	—	—	—
66	Little Snake River Bl Dry Gulch, Nr Baggs, Wy River	—	—	—	—	—
67	Bighorn River At Basin, Wy River	—	—	—	—	—
68	Belle Fourche River Below Moorcroft, Wy River	—	—	—	—	—
69	L Medicine Bow R At Boles Spring, Nr Medicine Bow Lake	—	—	—	—	—
70	Duck Creek Above New Fork R Nr Pinedale River	—	—	—	—	—
71	North Platte River Below Whalen Diversion Dam, Wy River	—	—	—	—	—
72	Forty Rod Creek At Daniel Hatchery, Nr Daniel, Wy River	—	—	—	—	—
73	Boulder Creek Above Boulder Lake, Near Boulder, Wy River	—	—	—	—	—
74	Hams Fork Below Pole Creek, Near Frontier, Wy River	—	—	—	—	—
75	Wind River Near Dubois, Wy River	—	—	—	—	—
76	Smiths Fork Near Border, Wy Lake	—	—	—	—	—
77	South Fork Shoshone River Ab Buffalo Bill Res, Wy River	—	—	—	—	—
78	Clear Creek Near Buffalo, Wy River	—	—	—	—	—
79	Medicine Bow R Ab E Fk Med Bow Nr Elk Mountain, Wy Lake	—	—	—	—	—
80	North Cottonwood Cr Bl Halverson Cr, Nr Daniel, Wy Lake	—	—	—	—	—
81	North Platte River Below Casper, Wy River	—	—	—	—	—
82	Blacks Fork Bl Blacks Fork Canal, Nr Robertson, Wy River	—	—	—	—	—
83	Lake Creek Below Willow Lake, Nr Cora, Wy River	—	—	—	—	—
84	Fontenelle C Nr Herschler Ranch, Nr Fontenelle, Wy Lake	—	—	—	—	—
85	Jackson Lake Near Moran, Wy Lake	—	—	—	—	—
86	East Fork Of Smiths Fork Near Robertson, Wy Lake	—	—	—	—	—
87	Little Snake River Ab Savery Cr, Nr Savery, Wy River	—	—	—	—	—
88	Bear River Above Reservoir, Near Woodruff, Ut River	—	—	—	—	—
89	Bighorn River At Kane, Wy River	—	—	—	—	—
90	Gros Ventre River At Zenith, Wy River	—	—	—	—	—
91	Sweetwater River Near Sweetwater Station, Wy River	—	—	—	—	—
92	East Fork At New Fork, Wy Lake	—	—	—	—	—
93	North Platte River At Wyoming-Nebraska State Line River	—	—	—	—	—
94	East Fork At Newfork, Wy Lake	—	—	—	—	—
95	Blacks Fork Near Millburne, Wy Lake	—	—	—	—	—
96	Dinwoody Creek Above Lakes, Near Burris, Wy River	—	—	—	—	—
97	Little Snake R Bl Gibson Blair Ditch, Nr Baggs, Wy Lake	—	—	—	—	—
98	Middle Fork Powder River Near Barnum, Wy River	—	—	—	—	—
99	Caballo Creek At Mouth, Near Piney, Wy River	—	—	—	—	—
100	L Medicine Bow R Ab Sand Cr, Nr Shirley Basin, Wy Lake	—	—	—	—	—

Boiling River At Mammoth,Ynp River

128.8°F

🔥 Hot

Tantalus Creek At Norris Junction, Ynp River

87.1°F

🔥 Hot

Wind River Ab Boysen Reservoir, Nr Shoshoni, Wy River

79.2°F

☀️ Warm

Firehole River Near West Yellowstone Mt River

78.1°F

☀️ Warm

Muddy Creek Near Shoshoni, Wy River

75.9°F

☀️ Warm

Muddy Creek Below Young Draw, Near Baggs, Wy River

75.7°F

☀️ Warm

Fivemile Creek Near Shoshoni, Wy River

72.9°F

🌤️ Comfortable

Gibbon River At Madison Jct, Ynp River

71.8°F

🌤️ Comfortable

Shoshone River Near Lovell, Wy River

71.1°F

🌤️ Comfortable

Flat Creek Below Cache Creek, Near Jackson, Wy River

70°F

🌤️ Comfortable

Snake River Near Moran, Wy River

68.2°F

🌤️ Comfortable

Lamar River Nr Tower Ranger Station Ynp River

67.3°F

🌤️ Comfortable

Snake River At Moose, Wy River

67.3°F

🌤️ Comfortable

Snake River Below Flat Creek, Near Jackson, Wy River

66.9°F

🌤️ Comfortable

Cheyenne River Near Spencer, Wy River

65.8°F

🌤️ Comfortable

Snake River Ab Jackson Lake At Flagg Ranch Wy River

65.8°F

🌤️ Comfortable

Bull Lake Creek Above Bull Lake, Wy River

65.5°F

🌤️ Comfortable

Pacific Creek At Moran, Wy River

65.5°F

🌤️ Comfortable

Firehole River At Old Faithful, Ynp River

65.3°F

🌤️ Comfortable

Gros Ventre River At Kelly, Wy River

64.9°F

🌊 Cool

More Wyoming Resources

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

❓ Wyoming Water Temperature FAQ

What is the warmest lake in Wyoming today?

Based on our latest USGS data, Boiling River At Mammoth,Ynp is currently the warmest water body in Wyoming at 128.8°F.

Which Wyoming lakes are good for swimming right now?

Lakes with water temperatures above 72°F are generally comfortable for swimming. Currently, Wyoming's average water temperature is 61.4°F — check individual lakes above for specific conditions.

What is the best water temperature for fishing in Wyoming?

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 Wyoming — 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.