What is the average water temperature in Wyoming?

The current average water temperature across Wyoming's monitored water bodies is 54.1°F.

🌡️

Wyoming Water Temperatures

Q: What is the warmest lake in Wyoming today?

Boiling River At Mammoth,Ynp at 113.7°F.

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

With Data

54.1°F

State Avg

113.7°F

Warmest

113.7°F

Warmest

Boiling River At Mammoth,Ynp

54.1°F

State Average

100 water bodies

32°F

Coldest

Big Sandy River At Gasson Bridge, Near Eden, Wy

🏊

Swimming Conditions

⛔ Cold shock risk

Based on avg 54.1°F

🎣

Fishing Conditions

🎣 Fair — slow presentations

Based on avg 54.1°F

Wyoming — Ranked by Temperature

46 with data

#	Water Body	°F	°C	Condition	🏊	Date
1	Boiling River At Mammoth,Ynp River	113.7°	45.4°	🔥 Hot	🏊 Excellent	Jun 4
2	Tantalus Creek At Norris Junction, Ynp River	78.3°	25.7°	☀️ Warm	✅ Good	Jun 4
3	Muddy Creek Near Shoshoni, Wy River	68.5°	20.3°	🌤️ Comfortable	⚠️ Brisk	Jun 4
4	Firehole River Near West Yellowstone Mt River	67.5°	19.7°	🌤️ Comfortable	⚠️ Brisk	Jun 4
5	Cheyenne River Near Spencer, Wy River	65.8°	18.8°	🌤️ Comfortable	⚠️ Brisk	Aug 23
6	Wind River Ab Boysen Reservoir, Nr Shoshoni, Wy River	65.7°	18.7°	🌤️ Comfortable	⚠️ Brisk	Jun 4
7	Fivemile Creek Near Shoshoni, Wy River	65.3°	18.5°	🌤️ Comfortable	⚠️ Brisk	Jun 4
8	Muddy Creek Above Olson Draw, Near Dad, Wy River	64.9°	18.3°	🌊 Cool	🚫 Cold	Jun 4
9	Shoshone River Near Lovell, Wy River	64.6°	18.1°	🌊 Cool	🚫 Cold	Jun 4
10	Green River Near Green River, Wy River	64.4°	18°	🌊 Cool	🚫 Cold	Jun 4
11	Muddy Creek Below Young Draw, Near Baggs, Wy River	64.2°	17.9°	🌊 Cool	🚫 Cold	Jun 4
12	Gibbon River At Madison Jct, Ynp River	63.3°	17.4°	🌊 Cool	🚫 Cold	Jun 4
13	Wind River At Riverton, Wy River	60.8°	16°	🌊 Cool	🚫 Cold	Sep 30
14	Gros Ventre R Ab Upper Slide Lk, Nr Kelly, Wy Lake	60.4°	15.8°	🌊 Cool	🚫 Cold	Aug 8
15	Green River Below Fontenelle Reservoir, Wy River	57.9°	14.4°	🌊 Cool	🚫 Cold	Jun 4
16	Flat Creek Below Cache Creek, Near Jackson, Wy River	57°	13.9°	🌊 Cool	🚫 Cold	Jun 4
17	Wind River Near Kinnear, Wy River	54.7°	12.6°	❄️ Cold	⛔ Very cold	Jun 15
18	Snake River Near Moran, Wy River	54°	12.2°	❄️ Cold	⛔ Very cold	Jun 5
19	Snake River At Moose, Wy River	54°	12.2°	❄️ Cold	⛔ Very cold	Jun 4
20	Snake River Below Flat Creek, Near Jackson, Wy River	53.6°	12°	❄️ Cold	⛔ Very cold	Jun 5
21	Fish Creek At Wilson, Wy River	53.6°	12°	❄️ Cold	⛔ Very cold	Jun 5
22	Bull Lake Creek Above Bull Lake, Wy River	53.1°	11.7°	❄️ Cold	⛔ Very cold	Jun 4
23	Firehole River At Old Faithful, Ynp River	50.5°	10.3°	❄️ Cold	⛔ Very cold	Jun 4
24	Gros Ventre River At Kelly, Wy River	50.5°	10.3°	❄️ Cold	⛔ Very cold	Jun 4
25	Hoback River Near Jackson, Wy River	50.4°	10.2°	❄️ Cold	⛔ Very cold	Jun 4
26	Pacific Creek At Moran, Wy River	50°	10°	❄️ Cold	⛔ Very cold	Jun 4
27	Snake River Above Reservoir, Near Alpine, Wy River	50°	10°	❄️ Cold	⛔ Very cold	Jun 4
28	New Fork River Near Big Piney, Wy River	49.6°	9.8°	❄️ Cold	⛔ Very cold	Oct 8
29	Blacks Fork Above Smiths Fork, Near Lyman, Wy Lake	49.1°	9.5°	❄️ Cold	⛔ Very cold	Oct 2
30	Lamar River Nr Tower Ranger Station Ynp River	48.4°	9.1°	❄️ Cold	⛔ Very cold	Jun 4
31	Encampment River Ab Hog Park Cr, Nr Encampment, Wy River	47.7°	8.7°	❄️ Cold	⛔ Very cold	Jun 4
32	Laramie River Near Fort Laramie, Wy River	46.9°	8.3°	❄️ Cold	⛔ Very cold	Oct 30
33	Snake River Ab Jackson Lake At Flagg Ranch Wy River	46.9°	8.3°	❄️ Cold	⛔ Very cold	Jun 5
34	Salt River Above Reservoir, Near Etna, Wy River	46°	7.8°	❄️ Cold	⛔ Very cold	Sep 16
35	Little Powder River Ab Dry Creek, Near Weston, Wy River	45.9°	7.7°	❄️ Cold	⛔ Very cold	Oct 27
36	Buffalo Fork Ab Lava Creek, Nr Moran, Wy River	45.3°	7.4°	❄️ Cold	⛔ Very cold	Jun 5
37	Cache Creek Near Jackson, Wy River	44.1°	6.7°	🧊 Very Cold	⛔ Very cold	Jun 4
38	Greys River Above Reservoir, Near Alpine, Wy River	43.7°	6.5°	🧊 Very Cold	⛔ Very cold	Sep 29
39	Bear River Below Smiths Fork, Nr Cokeville, Wy River	43.7°	6.5°	🧊 Very Cold	⛔ Very cold	Oct 10
40	Yellowstone River At Yellowstone Lk Outlet Ynp River	43.5°	6.4°	🧊 Very Cold	⛔ Very cold	Sep 29
41	Pine Creek Above Fremont Lake, Wy River	43.5°	6.4°	🧊 Very Cold	⛔ Very cold	Jun 4
42	Blackrock Cr Bl Split Rock Cr, Nr Moran, Wy Lake	42.8°	6°	🧊 Very Cold	⛔ Very cold	Jun 4
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	New Fork River Above Pine Cr, Nr Pinedale, Wy River	—	—	—	—	—
51	Muddy Creek Near Piedmont, Wy River	—	—	—	—	—
52	Little Snake River Near Dixon, Wy River	—	—	—	—	—
53	Sf L Wind Riv Ab Washakie Res, Nr Ft Washakie, Wy Lake	—	—	—	—	—
54	Bear River Below Reservoir, Near Woodruff, Ut River	—	—	—	—	—
55	North Fork Shoshone River At Wapiti, Wy River	—	—	—	—	—
56	Encampment River At Mouth, Near Encampment, Wy River	—	—	—	—	—
57	Crow Creek Near Fairview, Wy River	—	—	—	—	—
58	North Platte River Below Pathfinder Reservoir, Wy River	—	—	—	—	—
59	Ward Ball Reservoir Outflow, Nr Boulder, Wy Reservoir	—	—	—	—	—
60	Green River At Warren Bridge, Near Daniel, Wy River	—	—	—	—	—
61	Blacks Fork Near Urie, Wy Lake	—	—	—	—	—
62	Henrys Fork Near Burntfork, Wy Lake	—	—	—	—	—
63	Little Snake River Bl Dry Gulch, Nr Baggs, Wy River	—	—	—	—	—
64	Bighorn River At Basin, Wy River	—	—	—	—	—
65	Salt Creek Near Sussex, Wy River	—	—	—	—	—
66	Granite C Ab Granite C Supplemental, Nr Moose, Wy Lake	—	—	—	—	—
67	L Medicine Bow R At Boles Spring, Nr Medicine Bow Lake	—	—	—	—	—
68	Duck Creek Above New Fork R Nr Pinedale River	—	—	—	—	—
69	North Platte River Below Whalen Diversion Dam, Wy River	—	—	—	—	—
70	Boulder Creek Above Boulder Lake, Near Boulder, Wy River	—	—	—	—	—
71	Hams Fork Below Pole Creek, Near Frontier, Wy River	—	—	—	—	—
72	Wind River Near Dubois, Wy River	—	—	—	—	—
73	Smiths Fork Near Border, Wy Lake	—	—	—	—	—
74	South Fork Shoshone River Ab Buffalo Bill Res, Wy River	—	—	—	—	—
75	Belle Fourche River Below Moorcroft, Wy River	—	—	—	—	—
76	Medicine Bow R Ab E Fk Med Bow Nr Elk Mountain, Wy Lake	—	—	—	—	—
77	North Cottonwood Cr Bl Halverson Cr, Nr Daniel, Wy Lake	—	—	—	—	—
78	North Platte River Below Casper, Wy River	—	—	—	—	—
79	Lake Creek Below Willow Lake, Nr Cora, Wy River	—	—	—	—	—
80	Fontenelle C Nr Herschler Ranch, Nr Fontenelle, Wy Lake	—	—	—	—	—
81	Jackson Lake Near Moran, Wy Lake	—	—	—	—	—
82	East Fork Of Smiths Fork Near Robertson, Wy Lake	—	—	—	—	—
83	Little Snake River Ab Savery Cr, Nr Savery, Wy River	—	—	—	—	—
84	Bear River Above Reservoir, Near Woodruff, Ut River	—	—	—	—	—
85	Bighorn River At Kane, Wy River	—	—	—	—	—
86	Clear Creek Near Buffalo, Wy River	—	—	—	—	—
87	Sweetwater River Near Sweetwater Station, Wy River	—	—	—	—	—
88	East Fork At New Fork, Wy Lake	—	—	—	—	—
89	North Platte River At Wyoming-Nebraska State Line River	—	—	—	—	—
90	East Fork At Newfork, Wy Lake	—	—	—	—	—
91	Blacks Fork Near Millburne, Wy Lake	—	—	—	—	—
92	Dinwoody Creek Above Lakes, Near Burris, Wy River	—	—	—	—	—
93	Little Snake R Bl Gibson Blair Ditch, Nr Baggs, Wy Lake	—	—	—	—	—
94	Middle Fork Powder River Near Barnum, Wy River	—	—	—	—	—
95	Gros Ventre River At Zenith, Wy River	—	—	—	—	—
96	L Medicine Bow R Ab Sand Cr, Nr Shirley Basin, Wy Lake	—	—	—	—	—
97	New Fork River Ab Willow Cr, Nr Cora, Wy River	—	—	—	—	—
98	North Platte River At Orin, Wy River	—	—	—	—	—
99	Big Sandy River Near Farson, Wy River	—	—	—	—	—
100	Muddy Creek Near Hampton, Wy River	—	—	—	—	—

Boiling River At Mammoth,Ynp River

113.7°F

🔥 Hot

Tantalus Creek At Norris Junction, Ynp River

78.3°F

☀️ Warm

Muddy Creek Near Shoshoni, Wy River

68.5°F

🌤️ Comfortable

Firehole River Near West Yellowstone Mt River

67.5°F

🌤️ Comfortable

Cheyenne River Near Spencer, Wy River

65.8°F

🌤️ Comfortable

Wind River Ab Boysen Reservoir, Nr Shoshoni, Wy River

65.7°F

🌤️ Comfortable

Fivemile Creek Near Shoshoni, Wy River

65.3°F

🌤️ Comfortable

Muddy Creek Above Olson Draw, Near Dad, Wy River

64.9°F

🌊 Cool

Shoshone River Near Lovell, Wy River

64.6°F

🌊 Cool

Green River Near Green River, Wy River

64.4°F

🌊 Cool

Muddy Creek Below Young Draw, Near Baggs, Wy River

64.2°F

🌊 Cool

Gibbon River At Madison Jct, Ynp River

63.3°F

🌊 Cool

Wind River At Riverton, Wy River

60.8°F

🌊 Cool

Gros Ventre R Ab Upper Slide Lk, Nr Kelly, Wy Lake

60.4°F

🌊 Cool

Green River Below Fontenelle Reservoir, Wy River

57.9°F

🌊 Cool

Flat Creek Below Cache Creek, Near Jackson, Wy River

57°F

🌊 Cool

Wind River Near Kinnear, Wy River

54.7°F

❄️ Cold

Snake River Near Moran, Wy River

54°F

❄️ Cold

Snake River At Moose, Wy River

54°F

❄️ Cold

Snake River Below Flat Creek, Near Jackson, Wy River

53.6°F

❄️ Cold

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 113.7°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 54.1°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.