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

Current Water Temperature

58.5°F

Measurement Time: Wednesday, September 9, 2026, 10:00 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

64°F
Sunny
Sunny
27%
WSW 7 mph
29°F

Weather Forecast

Sunny
This Afternoon
65°F - Sunny
Mostly Clear
Tonight
34°F - Mostly Clear
Sunny
Thursday
68°F - Sunny
Mostly Clear
Thursday Night
38°F - Mostly Clear
Sunny
Friday
68°F - Sunny
Partly Cloudy
Friday Night
36°F - Partly Cloudy
Mostly Sunny then Chance Showers And Thunderstorms
Saturday
69°F - Mostly Sunny then Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Saturday Night
34°F - Chance Showers And Thunderstorms
Chance Rain And Snow Showers
Sunday
51°F - Chance Rain And Snow Showers
Slight Chance T-storms
Sunday Night
26°F - Slight Chance T-storms
Mostly Sunny
Monday
55°F - Mostly Sunny
Mostly Clear
Monday Night
27°F - Mostly Clear
Sunny
Tuesday
62°F - Sunny
Partly Cloudy
Tuesday Night
32°F - Partly Cloudy

Astronomical

Sunrise: 6:56 AM
Sun Transit: 1:20 PM
Sunset: 7:45 PM
Daylight: 12 hrs 49 mins
Moonrise: 5:05 AM
Moon Transit: 12:13 AM
Moonset: 7:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

9:15 PM - 11:45 PM
11:43 AM - 2:13 PM

Minor Periods

6:36 PM - 8:06 PM
4:35 AM - 6:05 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: 6:56 AM
Sun Transit: 1:20 PM
Sunset: 7:45 PM
Daylight: 12 hrs 49 mins
Moonrise: 5:05 AM
Moon Transit: 12:13 AM
Moonset: 7:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

9:15 PM - 11:45 PM
11:43 AM - 2:13 PM

Minor Periods

6:36 PM - 8:06 PM
4:35 AM - 6:05 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: 6:56 AM
Sun Transit: 1:20 PM
Sunset: 7:45 PM
Daylight: 12 hrs 49 mins
Moonrise: 5:05 AM
Moon Transit: 12:13 AM
Moonset: 7:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

9:15 PM - 11:45 PM
11:43 AM - 2:13 PM

Minor Periods

6:36 PM - 8:06 PM
4:35 AM - 6:05 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: 6:57 AM
Sun Transit: 1:20 PM
Sunset: 7:43 PM
Daylight: 12 hrs 46 mins
Moonrise: 6:22 AM
Moon Transit: 1:01 PM
Moonset: 7:27 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

6:57 PM - 8:27 PM
5:52 AM - 7:22 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: 6:57 AM
Sun Transit: 1:20 PM
Sunset: 7:43 PM
Daylight: 12 hrs 46 mins
Moonrise: 6:22 AM
Moon Transit: 1:01 PM
Moonset: 7:27 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

6:57 PM - 8:27 PM
5:52 AM - 7:22 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: 6:58 AM
Sun Transit: 1:19 PM
Sunset: 7:41 PM
Daylight: 12 hrs 43 mins
Moonrise: 7:36 AM
Moon Transit: 1:47 PM
Moonset: 7:46 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:17 PM - 3:47 PM

Minor Periods

7:16 PM - 8:46 PM
7:06 AM - 8:36 AM

Action Rating: 5 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: 6:58 AM
Sun Transit: 1:19 PM
Sunset: 7:41 PM
Daylight: 12 hrs 43 mins
Moonrise: 7:36 AM
Moon Transit: 1:47 PM
Moonset: 7:46 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:17 PM - 3:47 PM

Minor Periods

7:16 PM - 8:46 PM
7:06 AM - 8:36 AM

Action Rating: 5 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: 6:59 AM
Sun Transit: 1:19 PM
Sunset: 7:39 PM
Daylight: 12 hrs 40 mins
Moonrise: 8:48 AM
Moon Transit: 2:32 PM
Moonset: 8:06 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:02 PM - 4:32 PM

Minor Periods

7:36 PM - 9:06 PM
8:18 AM - 9:48 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: 6:59 AM
Sun Transit: 1:19 PM
Sunset: 7:39 PM
Daylight: 12 hrs 40 mins
Moonrise: 8:48 AM
Moon Transit: 2:32 PM
Moonset: 8:06 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:02 PM - 4:32 PM

Minor Periods

7:36 PM - 9:06 PM
8:18 AM - 9:48 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: 7:00 AM
Sun Transit: 1:19 PM
Sunset: 7:37 PM
Daylight: 12 hrs 37 mins
Moonrise: 9:59 AM
Moon Transit: 3:17 PM
Moonset: 8:27 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:47 PM - 5:17 PM

Minor Periods

7:57 PM - 9:27 PM
9:29 AM - 10:59 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: 7:00 AM
Sun Transit: 1:19 PM
Sunset: 7:37 PM
Daylight: 12 hrs 37 mins
Moonrise: 9:59 AM
Moon Transit: 3:17 PM
Moonset: 8:27 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:47 PM - 5:17 PM

Minor Periods

7:57 PM - 9:27 PM
9:29 AM - 10:59 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: 7:01 AM
Sun Transit: 1:18 PM
Sunset: 7:35 PM
Daylight: 12 hrs 34 mins
Moonrise: 11:09 AM
Moon Transit: 4:03 PM
Moonset: 8:50 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

12:18 AM - 2:48 AM
3:33 PM - 6:03 PM

Minor Periods

8:20 PM - 9:50 PM
10:39 AM - 12:09 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: 7:01 AM
Sun Transit: 1:18 PM
Sunset: 7:35 PM
Daylight: 12 hrs 34 mins
Moonrise: 11:09 AM
Moon Transit: 4:03 PM
Moonset: 8:50 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

12:18 AM - 2:48 AM
3:33 PM - 6:03 PM

Minor Periods

8:20 PM - 9:50 PM
10:39 AM - 12:09 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: 7:02 AM
Sun Transit: 1:18 PM
Sunset: 7:33 PM
Daylight: 12 hrs 31 mins
Moonrise: 12:19 AM
Moon Transit: 4:51 PM
Moonset: 9:18 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

1:05 AM - 3:35 AM
4:21 PM - 6:51 PM

Minor Periods

8:48 PM - 10:18 PM
11:49 AM - 1:19 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: 7:02 AM
Sun Transit: 1:18 PM
Sunset: 7:33 PM
Daylight: 12 hrs 31 mins
Moonrise: 12:19 AM
Moon Transit: 4:51 PM
Moonset: 9:18 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

1:05 AM - 3:35 AM
4:21 PM - 6:51 PM

Minor Periods

8:48 PM - 10:18 PM
11:49 AM - 1:19 PM

Action Rating: 2 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