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

Current Water Temperature

56.5°F

Measurement Time: Wednesday, September 23, 2026, 3:00 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

45°F
Areas Of Fog
Areas Of Fog
95%
SSE 5 mph
44°F

Weather Forecast

Widespread Fog
Tonight
33°F - Widespread Fog
Areas Of Fog then Sunny
Thursday
67°F - Areas Of Fog then Sunny
Mostly Clear then Patchy Fog
Thursday Night
35°F - Mostly Clear then Patchy Fog
Patchy Fog then Sunny
Friday
66°F - Patchy Fog then Sunny
Partly Cloudy
Friday Night
37°F - Partly Cloudy
Sunny
Saturday
59°F - Sunny
Partly Cloudy
Saturday Night
35°F - Partly Cloudy
Partly Sunny then Slight Chance Showers And Thunderstorms
Sunday
62°F - Partly Sunny then Slight Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Sunday Night
35°F - Chance Showers And Thunderstorms
Chance Rain Showers
Monday
51°F - Chance Rain Showers
Slight Chance Showers And Thunderstorms then Slight Chance Rain And Snow Showers
Monday Night
28°F - Slight Chance Showers And Thunderstorms then Slight Chance Rain And Snow Showers
Mostly Sunny
Tuesday
51°F - Mostly Sunny
Mostly Clear
Tuesday Night
27°F - Mostly Clear
Sunny
Wednesday
55°F - Sunny

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

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

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: 7:13 AM
Sun Transit: 1:15 PM
Sunset: 7:16 PM
Daylight: 12 hrs 4 mins
Moonrise: 6:23 PM
Moon Transit: 12:00 AM
Moonset: 4:54 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
8:23 AM - 10:53 AM

Minor Periods

5:53 PM - 7:23 PM
4:24 AM - 5:54 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: 7:13 AM
Sun Transit: 1:15 PM
Sunset: 7:16 PM
Daylight: 12 hrs 4 mins
Moonrise: 6:23 PM
Moon Transit: 12:00 AM
Moonset: 4:54 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
8:23 AM - 10:53 AM

Minor Periods

5:53 PM - 7:23 PM
4:24 AM - 5:54 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: 7:14 AM
Sun Transit: 1:14 PM
Sunset: 7:15 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:42 PM
Moon Transit: 12:07 AM
Moonset: 6:04 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:07 AM - 11:37 AM

Minor Periods

6:12 PM - 7:42 PM
5:34 AM - 7:04 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: 7:14 AM
Sun Transit: 1:14 PM
Sunset: 7:15 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:42 PM
Moon Transit: 12:07 AM
Moonset: 6:04 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:07 AM - 11:37 AM

Minor Periods

6:12 PM - 7:42 PM
5:34 AM - 7:04 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: 7:15 AM
Sun Transit: 1:14 PM
Sunset: 7:13 PM
Daylight: 11 hrs 58 mins
Moonrise: 7:01 PM
Moon Transit: 12:51 AM
Moonset: 7:15 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:21 AM - 2:51 AM
6:03 AM - 8:33 AM

Minor Periods

6:31 PM - 8:01 PM
6:45 AM - 8:15 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: 7:15 AM
Sun Transit: 1:14 PM
Sunset: 7:13 PM
Daylight: 11 hrs 58 mins
Moonrise: 7:01 PM
Moon Transit: 12:51 AM
Moonset: 7:15 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:21 AM - 2:51 AM
6:03 AM - 8:33 AM

Minor Periods

6:31 PM - 8:01 PM
6:45 AM - 8:15 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: 7:16 AM
Sun Transit: 1:14 PM
Sunset: 7:11 PM
Daylight: 11 hrs 55 mins
Moonrise: 7:22 PM
Moon Transit: 1:37 AM
Moonset: 8:29 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

1:07 AM - 3:37 AM
10:39 AM - 1:09 PM

Minor Periods

6:52 PM - 8:22 PM
7:59 AM - 9:29 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: 7:16 AM
Sun Transit: 1:14 PM
Sunset: 7:11 PM
Daylight: 11 hrs 55 mins
Moonrise: 7:22 PM
Moon Transit: 1:37 AM
Moonset: 8:29 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

1:07 AM - 3:37 AM
10:39 AM - 1:09 PM

Minor Periods

6:52 PM - 8:22 PM
7:59 AM - 9:29 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: 7:18 AM
Sun Transit: 1:13 PM
Sunset: 7:09 PM
Daylight: 11 hrs 52 mins
Moonrise: 7:48 PM
Moon Transit: 2:26 AM
Moonset: 9:45 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

1:56 AM - 4:26 AM
11:30 AM - 2:00 PM

Minor Periods

7:18 PM - 8:48 PM
9:15 AM - 10:45 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: 7:18 AM
Sun Transit: 1:13 PM
Sunset: 7:09 PM
Daylight: 11 hrs 52 mins
Moonrise: 7:48 PM
Moon Transit: 2:26 AM
Moonset: 9:45 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

1:56 AM - 4:26 AM
11:30 AM - 2:00 PM

Minor Periods

7:18 PM - 8:48 PM
9:15 AM - 10:45 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: 7:19 AM
Sun Transit: 1:13 PM
Sunset: 7:07 PM
Daylight: 11 hrs 49 mins
Moonrise: 8:19 PM
Moon Transit: 3:18 AM
Moonset: 11:04 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:48 AM - 5:18 AM
12:22 AM - 2:52 PM

Minor Periods

7:49 PM - 9:19 PM
10:34 AM - 12:04 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: 7:19 AM
Sun Transit: 1:13 PM
Sunset: 7:07 PM
Daylight: 11 hrs 49 mins
Moonrise: 8:19 PM
Moon Transit: 3:18 AM
Moonset: 11:04 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:48 AM - 5:18 AM
12:22 AM - 2:52 PM

Minor Periods

7:49 PM - 9:19 PM
10:34 AM - 12:04 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: 7:20 AM
Sun Transit: 1:13 PM
Sunset: 7:05 PM
Daylight: 11 hrs 45 mins
Moonrise: 9:00 PM
Moon Transit: 4:14 AM
Moonset: 12:24 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:44 AM - 6:14 AM
1:21 PM - 3:51 PM

Minor Periods

8:30 PM - 10:00 PM
11:54 AM - 1:24 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