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

Current Water Temperature

58.5°F

Measurement Time: Wednesday, September 16, 2026, 11:00 AM 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

66°F
Mostly Cloudy
Mostly Cloudy
38%
SW 7 mph
40°F

Weather Forecast

Partly Cloudy then Slight Chance Rain Showers
Tonight
42°F - Partly Cloudy then Slight Chance Rain Showers
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Thursday
67°F - Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers And Thunderstorms Likely
Thursday Night
39°F - Showers And Thunderstorms Likely
Showers And Thunderstorms
Friday
65°F - Showers And Thunderstorms
Showers And Thunderstorms
Friday Night
36°F - Showers And Thunderstorms
Showers And Thunderstorms Likely
Saturday
58°F - Showers And Thunderstorms Likely
Chance Showers And Thunderstorms then Mostly Cloudy
Saturday Night
33°F - Chance Showers And Thunderstorms then Mostly Cloudy
Mostly Sunny then Slight Chance Showers And Thunderstorms
Sunday
63°F - Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Clear
Sunday Night
32°F - Mostly Clear
Sunny
Monday
66°F - Sunny
Mostly Clear
Monday Night
33°F - Mostly Clear
Sunny
Tuesday
67°F - Sunny
Mostly Clear
Tuesday Night
33°F - Mostly Clear
Sunny
Wednesday
67°F - Sunny

Astronomical

Sunrise: 7:04 AM
Sun Transit: 1:18 PM
Sunset: 7:31 PM
Daylight: 12 hrs 28 mins
Moonrise: 1:25 PM
Moon Transit: 5:41 PM
Moonset: 9:52 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

1:53 AM - 4:23 AM
5:11 PM - 7:41 PM

Minor Periods

9:22 PM - 10:52 PM
12:55 AM - 2:25 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 1:18 PM
Sunset: 7:31 PM
Daylight: 12 hrs 28 mins
Moonrise: 1:25 PM
Moon Transit: 5:41 PM
Moonset: 9:52 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

1:53 AM - 4:23 AM
5:11 PM - 7:41 PM

Minor Periods

9:22 PM - 10:52 PM
12:55 AM - 2:25 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 1:17 PM
Sunset: 7:30 PM
Daylight: 12 hrs 25 mins
Moonrise: 2:28 PM
Moon Transit: 6:31 PM
Moonset: 10:35 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

2:43 AM - 5:13 AM
6:01 PM - 8:31 PM

Minor Periods

10:05 PM - 11:35 PM
1:58 PM - 3:28 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 1:17 PM
Sunset: 7:30 PM
Daylight: 12 hrs 25 mins
Moonrise: 2:28 PM
Moon Transit: 6:31 PM
Moonset: 10:35 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

2:43 AM - 5:13 AM
6:01 PM - 8:31 PM

Minor Periods

10:05 PM - 11:35 PM
1:58 PM - 3:28 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 1:17 PM
Sunset: 7:28 PM
Daylight: 12 hrs 22 mins
Moonrise: 3:22 PM
Moon Transit: 7:23 PM
Moonset: 11:25 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

3:35 AM - 6:05 AM
6:53 PM - 9:23 PM

Minor Periods

12:00 AM - 12:00 AM
2:52 PM - 4:22 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 1:17 PM
Sunset: 7:28 PM
Daylight: 12 hrs 22 mins
Moonrise: 3:22 PM
Moon Transit: 7:23 PM
Moonset: 11:25 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

3:35 AM - 6:05 AM
6:53 PM - 9:23 PM

Minor Periods

12:00 AM - 12:00 AM
2:52 PM - 4:22 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 1:16 PM
Sunset: 7:26 PM
Daylight: 12 hrs 19 mins
Moonrise: 4:09 PM
Moon Transit: 8:14 PM
Moonset: 12:25 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

4:26 AM - 6:56 AM
7:44 PM - 10:14 PM

Minor Periods

3:39 PM - 5:09 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 1:16 PM
Sunset: 7:26 PM
Daylight: 12 hrs 19 mins
Moonrise: 4:09 PM
Moon Transit: 8:14 PM
Moonset: 12:25 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

4:26 AM - 6:56 AM
7:44 PM - 10:14 PM

Minor Periods

3:39 PM - 5:09 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 1:16 PM
Sunset: 7:24 PM
Daylight: 12 hrs 16 mins
Moonrise: 4:46 PM
Moon Transit: 9:04 PM
Moonset: 12:24 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

5:17 AM - 7:47 AM
8:34 PM - 11:04 PM

Minor Periods

4:16 PM - 5:46 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 1:16 PM
Sunset: 7:24 PM
Daylight: 12 hrs 16 mins
Moonrise: 4:46 PM
Moon Transit: 9:04 PM
Moonset: 12:24 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

5:17 AM - 7:47 AM
8:34 PM - 11:04 PM

Minor Periods

4:16 PM - 5:46 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 1:16 PM
Sunset: 7:22 PM
Daylight: 12 hrs 13 mins
Moonrise: 5:16 PM
Moon Transit: 9:52 PM
Moonset: 1:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

6:06 AM - 8:36 AM
9:22 PM - 11:52 PM

Minor Periods

4:46 PM - 6:16 PM
12:58 AM - 2:28 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 1:16 PM
Sunset: 7:22 PM
Daylight: 12 hrs 13 mins
Moonrise: 5:16 PM
Moon Transit: 9:52 PM
Moonset: 1:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

6:06 AM - 8:36 AM
9:22 PM - 11:52 PM

Minor Periods

4:46 PM - 6:16 PM
12:58 AM - 2:28 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 1:15 PM
Sunset: 7:20 PM
Daylight: 12 hrs 10 mins
Moonrise: 5:42 PM
Moon Transit: 10:38 PM
Moonset: 2:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

6:53 AM - 9:23 AM
12:00 AM - 12:00 AM

Minor Periods

5:12 PM - 6:42 PM
2:06 AM - 3:36 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 1:15 PM
Sunset: 7:20 PM
Daylight: 12 hrs 10 mins
Moonrise: 5:42 PM
Moon Transit: 10:38 PM
Moonset: 2:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

6:53 AM - 9:23 AM
12:00 AM - 12:00 AM

Minor Periods

5:12 PM - 6:42 PM
2:06 AM - 3:36 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 1:15 PM
Sunset: 7:18 PM
Daylight: 12 hrs 7 mins
Moonrise: 6:03 PM
Moon Transit: 11:23 PM
Moonset: 3:44 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

7:39 AM - 10:09 AM
12:00 AM - 12:00 AM

Minor Periods

5:33 PM - 7:03 PM
3:14 AM - 4:44 AM

Action Rating: 4 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.

Webcams Near Yellowstone National Park, WY