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

Current Water Temperature

66.9°F

Measurement Time: Wednesday, August 26, 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

76°F
Slight Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms
31%
W 8 mph
43°F

Weather Forecast

Slight Chance Showers And Thunderstorms
This Afternoon
78°F - Slight Chance Showers And Thunderstorms
Mostly Cloudy
Tonight
44°F - Mostly Cloudy
Mostly Sunny then Slight Chance Showers And Thunderstorms
Thursday
79°F - Mostly Sunny then Slight Chance Showers And Thunderstorms
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Thursday Night
43°F - Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Showers And Thunderstorms Likely
Friday
70°F - Showers And Thunderstorms Likely
Showers And Thunderstorms
Friday Night
41°F - Showers And Thunderstorms
Showers And Thunderstorms
Saturday
64°F - Showers And Thunderstorms
Showers And Thunderstorms
Saturday Night
36°F - Showers And Thunderstorms
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Sunday
62°F - Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Mostly Clear
Sunday Night
32°F - Mostly Clear
Sunny then Slight Chance Showers And Thunderstorms
Monday
67°F - Sunny then Slight Chance Showers And Thunderstorms
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Monday Night
36°F - Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Slight Chance Rain Showers then Chance Showers And Thunderstorms
Tuesday
68°F - Slight Chance Rain Showers then Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Tuesday Night
36°F - Chance Showers And Thunderstorms

Astronomical

Sunrise: 6:39 AM
Sun Transit: 1:25 PM
Sunset: 8:10 PM
Daylight: 13 hrs 31 mins
Moonrise: 7:39 PM
Moon Transit: 12:00 AM
Moonset: 4:52 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:00 AM - 11:30 AM

Minor Periods

7:09 PM - 8:39 PM
4:22 AM - 5:52 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: 6:39 AM
Sun Transit: 1:25 PM
Sunset: 8:10 PM
Daylight: 13 hrs 31 mins
Moonrise: 7:39 PM
Moon Transit: 12:00 AM
Moonset: 4:52 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:00 AM - 11:30 AM

Minor Periods

7:09 PM - 8:39 PM
4:22 AM - 5:52 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: 6:39 AM
Sun Transit: 1:25 PM
Sunset: 8:10 PM
Daylight: 13 hrs 31 mins
Moonrise: 7:39 PM
Moon Transit: 12:00 AM
Moonset: 4:52 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:00 AM - 11:30 AM

Minor Periods

7:09 PM - 8:39 PM
4:22 AM - 5:52 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: 6:41 AM
Sun Transit: 1:24 PM
Sunset: 8:08 PM
Daylight: 13 hrs 28 mins
Moonrise: 8:00 PM
Moon Transit: 12:45 AM
Moonset: 6:01 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:15 AM - 2:45 AM
9:45 AM - 12:15 AM

Minor Periods

7:30 PM - 9:00 PM
5:31 AM - 7:01 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: 6:41 AM
Sun Transit: 1:24 PM
Sunset: 8:08 PM
Daylight: 13 hrs 28 mins
Moonrise: 8:00 PM
Moon Transit: 12:45 AM
Moonset: 6:01 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:15 AM - 2:45 AM
9:45 AM - 12:15 AM

Minor Periods

7:30 PM - 9:00 PM
5:31 AM - 7:01 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: 6:42 AM
Sun Transit: 1:24 PM
Sunset: 8:07 PM
Daylight: 13 hrs 25 mins
Moonrise: 8:19 PM
Moon Transit: 1:29 AM
Moonset: 7:10 AM
Moon Phase: Full
Moon Illumination: 98.7%

Best Times for Fishing or Hunting

Major Periods

12:59 AM - 3:29 AM
10:30 AM - 1:00 PM

Minor Periods

7:49 PM - 9:19 PM
6:40 AM - 8:10 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: 6:42 AM
Sun Transit: 1:24 PM
Sunset: 8:07 PM
Daylight: 13 hrs 25 mins
Moonrise: 8:19 PM
Moon Transit: 1:29 AM
Moonset: 7:10 AM
Moon Phase: Full
Moon Illumination: 98.7%

Best Times for Fishing or Hunting

Major Periods

12:59 AM - 3:29 AM
10:30 AM - 1:00 PM

Minor Periods

7:49 PM - 9:19 PM
6:40 AM - 8:10 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: 6:43 AM
Sun Transit: 1:24 PM
Sunset: 8:05 PM
Daylight: 13 hrs 22 mins
Moonrise: 8:37 PM
Moon Transit: 10:49 PM
Moonset: 8:20 AM
Moon Phase: Full
Moon Illumination: 95.0%

Best Times for Fishing or Hunting

Major Periods

11:13 AM - 1:43 PM
12:00 AM - 12:00 AM

Minor Periods

8:07 PM - 9:37 PM
7:50 AM - 9:20 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: 6:43 AM
Sun Transit: 1:24 PM
Sunset: 8:05 PM
Daylight: 13 hrs 22 mins
Moonrise: 8:37 PM
Moon Transit: 10:49 PM
Moonset: 8:20 AM
Moon Phase: Full
Moon Illumination: 95.0%

Best Times for Fishing or Hunting

Major Periods

11:13 AM - 1:43 PM
12:00 AM - 12:00 AM

Minor Periods

8:07 PM - 9:37 PM
7:50 AM - 9:20 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: 6:44 AM
Sun Transit: 1:23 PM
Sunset: 8:03 PM
Daylight: 13 hrs 19 mins
Moonrise: 8:56 PM
Moon Transit: 12:00 AM
Moonset: 9:31 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

8:26 PM - 9:56 PM
9:01 AM - 10:31 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: 6:44 AM
Sun Transit: 1:23 PM
Sunset: 8:03 PM
Daylight: 13 hrs 19 mins
Moonrise: 8:56 PM
Moon Transit: 12:00 AM
Moonset: 9:31 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

8:26 PM - 9:56 PM
9:01 AM - 10:31 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: 6:45 AM
Sun Transit: 1:23 PM
Sunset: 8:01 PM
Daylight: 13 hrs 16 mins
Moonrise: 9:18 PM
Moon Transit: 3:42 AM
Moonset: 10:44 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

3:12 AM - 5:42 AM
12:44 AM - 3:14 PM

Minor Periods

8:48 PM - 10:18 PM
10:14 AM - 11:44 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: 6:45 AM
Sun Transit: 1:23 PM
Sunset: 8:01 PM
Daylight: 13 hrs 16 mins
Moonrise: 9:18 PM
Moon Transit: 3:42 AM
Moonset: 10:44 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

3:12 AM - 5:42 AM
12:44 AM - 3:14 PM

Minor Periods

8:48 PM - 10:18 PM
10:14 AM - 11:44 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: 6:46 AM
Sun Transit: 1:23 PM
Sunset: 7:59 PM
Daylight: 13 hrs 13 mins
Moonrise: 9:44 PM
Moon Transit: 4:31 AM
Moonset: 12:00 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

4:01 AM - 6:31 AM
1:34 PM - 4:04 PM

Minor Periods

9:14 PM - 10:44 PM
11:30 AM - 1:00 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: 6:46 AM
Sun Transit: 1:23 PM
Sunset: 7:59 PM
Daylight: 13 hrs 13 mins
Moonrise: 9:44 PM
Moon Transit: 4:31 AM
Moonset: 12:00 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

4:01 AM - 6:31 AM
1:34 PM - 4:04 PM

Minor Periods

9:14 PM - 10:44 PM
11:30 AM - 1:00 PM

Action Rating: 3 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