Water Temperature of the Firehole River in Yellowstone National Park, WY

Current Water Temperature

45.7°F

Measurement Time: Tuesday, June 9, 2026, 9:00 PM MDT

Temperature Locations

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Local Points of Interest

Old Faithful; Alta, WY

Firehole River

Station Name: Firehole River at Old Faithful, YNP
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 7,372 feet

Nearest Address:
Mallard Lake Trail
Yellowstone National Park, WY 82190
Teton County

GPS Coordinates: 44.4593333, -110.8222722

Nearby Water Temperatures

Firehole River, Yellowstone National Park, WY (11.3 mi)
Gibbon River, Yellowstone National Park, WY (12.7 mi)
Madison River, West Yellowstone, MT (18.2 mi)
Tantalus Creek, Yellowstone National Park, WY (19.6 mi)
Snake River, Flagg Ranch, WY (26.1 mi)
Boiling River Hot Springs, Yellowstone National Park, WY (36.9 mi)
Madison River, Grayling, MT (37.9 mi)
Lamar River, Yellowstone National Park, WY (38.6 mi)
Snake River, Moran, WY (43.1 mi)
Yellowstone River, Corwin Springs, MT (45.1 mi)
Buffalo Fork River, Moran, WY (46.9 mi)
Madison River, Cameron, MT (47.6 mi)
Blackrock Creek, Moran, WY (55.2 mi)
Snake River, Moose, WY (55.9 mi)
Fish Creek, Wilson, WY (66.3 mi)

Weather for Yellowstone National Park, Wyoming

Current Weather

30.8°F
Clear
Clear
23.2°F
30.8°F
77%
SW 8.3 mph
17.4 mph
22.4°F
23.4°F
0 in
11%
6 mi
1011 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Wed
H: 44°F
L: 27°F
Sunny
Thu
H: 56°F
L: 23°F
Sunny
Fri
H: 64°F
L: 32°F
Patchy rain nearby
Sat
H: 62°F
L: 37°F
Patchy rain nearby
Sun
H: 63°F
L: 33°F

Air Quality

AQI: 1 - Good
PM2.5: 0.8 μg/m3
PM10: 3.1 μg/m3
Carbon Monoxide: 99 μg/m3
Nitrogen Dioxide: 1.9 μg/m3
Sulphur Dioxide: 0.1 μg/m3
Ozone: 81 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:22 PM
Sunset: 9:07 PM
Daylight: 15 hrs 29 mins
Moonrise: 2:21 AM
Moon Transit: 9:05 AM
Moonset: 4:07 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

8:35 AM - 11:05 AM
6:08 PM - 8:38 PM

Minor Periods

3:37 PM - 5:07 PM
1:51 AM - 3:21 AM

Action Rating: 3 out of 5

Wind Advisory issued June 9 at 1:04PM MDT until June 9 at 9:00PM MDT by NWS Pocatello ID

Effective: Tue June 9, 2026, 1:04 PM
Expires: Wed June 10, 2026, 5:00 AM

* WHAT...West to southwest winds 25 to 35 mph with gusts up to 50 mph. * WHERE...Arco/Mud Lake Desert and Upper Snake River Plain. * WHEN...Until 9 PM MDT this evening, then from 9 AM to 9 PM MDT Wednesday. * IMPACTS...Gusty winds could make driving difficult, especially for high profile vehicles. Unsecured objects may be blown around. Strong winds and rough waves on area lakes will create hazardous conditions for small craft.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. Boaters on area lakes should use extra caution since strong winds and rough waves can overturn small craft.


Wind Advisory issued June 9 at 1:04PM MDT until June 10 at 9:00PM MDT by NWS Pocatello ID

Effective: Tue June 9, 2026, 1:04 PM
Expires: Wed June 10, 2026, 5:00 AM

* WHAT...West to southwest winds 25 to 35 mph with gusts up to 50 mph. * WHERE...Arco/Mud Lake Desert and Upper Snake River Plain. * WHEN...Until 9 PM MDT this evening, then from 9 AM to 9 PM MDT Wednesday. * IMPACTS...Gusty winds could make driving difficult, especially for high profile vehicles. Unsecured objects may be blown around. Strong winds and rough waves on area lakes will create hazardous conditions for small craft.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. Boaters on area lakes should use extra caution since strong winds and rough waves can overturn small craft.


Wind Advisory issued June 9 at 9:22PM MDT until June 10 at 9:00PM MDT by NWS Pocatello ID

Effective: Tue June 9, 2026, 9:22 PM
Expires: Wed June 10, 2026, 3:00 PM

* WHAT...For the Wind Advisory, west to southwest winds 25 to 35 mph with gusts up to 50 mph expected. For the Freeze Watch, temperatures near freezing are possible. * WHERE...Shoshone/Lava Beds, Arco/Mud Lake Desert, Lower Snake River Plain, and Upper Snake River Plain. * WHEN...For the Wind Advisory, from 9 AM to 9 PM MDT Wednesday. For the Freeze Watch, from late Wednesday night through Thursday morning. * IMPACTS...Gusty winds could make driving difficult, especially for high profile vehicles. Unsecured objects may be blown around. Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. Boaters on area lakes should use extra caution since strong winds and rough waves can overturn small craft. Take steps now to protect tender plants from the cold.


Freeze Watch issued June 9 at 9:22PM MDT until June 11 at 9:00AM MDT by NWS Pocatello ID

Effective: Tue June 9, 2026, 9:22 PM
Expires: Wed June 10, 2026, 3:00 PM

* WHAT...For the Wind Advisory, west to southwest winds 25 to 35 mph with gusts up to 50 mph expected. For the Freeze Watch, temperatures near freezing are possible. * WHERE...Shoshone/Lava Beds, Arco/Mud Lake Desert, Lower Snake River Plain, and Upper Snake River Plain. * WHEN...For the Wind Advisory, from 9 AM to 9 PM MDT Wednesday. For the Freeze Watch, from late Wednesday night through Thursday morning. * IMPACTS...Gusty winds could make driving difficult, especially for high profile vehicles. Unsecured objects may be blown around. Strong winds and rough waves on area lakes will create hazardous conditions for small craft. Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. Boaters on area lakes should use extra caution since strong winds and rough waves can overturn small craft. Take steps now to protect tender plants from the cold.
Wednesday, June 10, 2026

Weather Forecast

Patchy rain nearby
44.3°F
27.1°F
36.3°F
67%
0.15 in
62%
44%
18.6 mph
7.5


Air Quality

AQI: 1 - Good
PM2.5: 1.79 μg/m3
PM10: 6.98 μg/m3
Carbon Monoxide: 101.5 μg/m3
Nitrogen Dioxide: 1 μg/m3
Sulphur Dioxide: 0.13 μg/m3
Ozone: 91.83 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:22 PM
Sunset: 9:07 PM
Daylight: 15 hrs 29 mins
Moonrise: 2:21 AM
Moon Transit: 9:05 AM
Moonset: 4:07 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

8:35 AM - 11:05 AM
6:08 PM - 8:38 PM

Minor Periods

3:37 PM - 5:07 PM
1:51 AM - 3:21 AM

Action Rating: 3 out of 5

Thursday, June 11, 2026

Weather Forecast

Sunny
56.3°F
23.4°F
40.8°F
62%
0 in
5%
0%
14.5 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 0.57 μg/m3
PM10: 1.28 μg/m3
Carbon Monoxide: 99 μg/m3
Nitrogen Dioxide: 1.05 μg/m3
Sulphur Dioxide: 0.17 μg/m3
Ozone: 78.38 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:23 PM
Sunset: 9:08 PM
Daylight: 15 hrs 30 mins
Moonrise: 2:44 AM
Moon Transit: 9:56 AM
Moonset: 5:26 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.5%

Best Times for Fishing or Hunting

Major Periods

7:01 PM - 9:31 PM
9:26 AM - 11:56 AM

Minor Periods

4:56 PM - 6:26 PM
2:14 AM - 3:44 AM

Action Rating: 3 out of 5

Friday, June 12, 2026

Weather Forecast

Sunny
63.5°F
32.1°F
49.1°F
44%
0 in
1%
0%
13.6 mph
9.9


Air Quality

AQI: 1 - Good
PM2.5: 2.03 μg/m3
PM10: 6.86 μg/m3
Carbon Monoxide: 99.63 μg/m3
Nitrogen Dioxide: 1.12 μg/m3
Sulphur Dioxide: 0.19 μg/m3
Ozone: 101.13 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:23 PM
Sunset: 9:08 PM
Daylight: 15 hrs 30 mins
Moonrise: 3:11 AM
Moon Transit: 10:52 AM
Moonset: 6:50 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

7:59 PM - 10:29 PM
10:22 AM - 12:52 AM

Minor Periods

6:20 PM - 7:50 PM
2:41 AM - 4:11 AM

Action Rating: 2 out of 5

Saturday, June 13, 2026

Weather Forecast

Patchy rain nearby
61.6°F
36.9°F
49.6°F
55%
0.01 in
36%
0%
13.9 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 1.93 μg/m3
PM10: 5.67 μg/m3
Carbon Monoxide: 101.65 μg/m3
Nitrogen Dioxide: 1.24 μg/m3
Sulphur Dioxide: 0.13 μg/m3
Ozone: 102.33 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:23 PM
Sunset: 9:09 PM
Daylight: 15 hrs 31 mins
Moonrise: 3:48 AM
Moon Transit: 11:54 AM
Moonset: 8:14 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

9:03 PM - 11:33 PM
11:24 AM - 1:54 PM

Minor Periods

7:44 PM - 9:14 PM
3:18 AM - 4:48 AM

Action Rating: 4 out of 5

Sunday, June 14, 2026

Weather Forecast

Patchy rain nearby
62.8°F
33.1°F
41.8°F
72%
0.18 in
66%
0%
13 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 0.06 μg/m3
PM10: 0.11 μg/m3
Carbon Monoxide: 113 μg/m3
Nitrogen Dioxide: 0.83 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 67.71 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:23 PM
Sunset: 9:09 PM
Daylight: 15 hrs 31 mins
Moonrise: 4:38 AM
Moon Transit: 1:01 PM
Moonset: 9:29 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:31 AM - 3:01 PM

Minor Periods

8:59 PM - 10:29 PM
4:08 AM - 5:38 AM

Action Rating: 5 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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