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

Current Water Temperature

54.5°F

Measurement Time: Wednesday, September 30, 2026, 4:00 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

44°F
Mostly Clear
Mostly Clear
89%
SSW 3 mph
41°F

Weather Forecast

Mostly Clear
Tonight
32°F - Mostly Clear
Sunny
Thursday
63°F - Sunny
Partly Cloudy
Thursday Night
33°F - Partly Cloudy
Sunny
Friday
65°F - Sunny
Partly Cloudy
Friday Night
36°F - Partly Cloudy
Mostly Sunny
Saturday
68°F - Mostly Sunny
Mostly Clear
Saturday Night
35°F - Mostly Clear
Sunny
Sunday
69°F - Sunny
Mostly Clear
Sunday Night
38°F - Mostly Clear
Mostly Sunny
Monday
68°F - Mostly Sunny
Partly Cloudy
Monday Night
38°F - Partly Cloudy
Sunny
Tuesday
66°F - Sunny
Mostly Clear
Tuesday Night
35°F - Mostly Clear
Sunny
Wednesday
66°F - Sunny

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

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

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: 7:21 AM
Sun Transit: 1:12 PM
Sunset: 7:04 PM
Daylight: 11 hrs 42 mins
Moonrise: 9:52 PM
Moon Transit: 5:15 AM
Moonset: 1:38 PM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:45 AM - 7:15 AM
2:22 PM - 4:52 PM

Minor Periods

9:22 PM - 10:52 PM
1:08 PM - 2:38 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: 7:21 AM
Sun Transit: 1:12 PM
Sunset: 7:04 PM
Daylight: 11 hrs 42 mins
Moonrise: 9:52 PM
Moon Transit: 5:15 AM
Moonset: 1:38 PM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:45 AM - 7:15 AM
2:22 PM - 4:52 PM

Minor Periods

9:22 PM - 10:52 PM
1:08 PM - 2:38 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: 7:22 AM
Sun Transit: 1:12 PM
Sunset: 7:02 PM
Daylight: 11 hrs 39 mins
Moonrise: 10:58 PM
Moon Transit: 6:17 AM
Moonset: 2:43 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:47 AM - 8:17 AM
3:25 PM - 5:55 PM

Minor Periods

10:28 PM - 11:58 PM
2:13 PM - 3:43 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: 7:22 AM
Sun Transit: 1:12 PM
Sunset: 7:02 PM
Daylight: 11 hrs 39 mins
Moonrise: 10:58 PM
Moon Transit: 6:17 AM
Moonset: 2:43 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:47 AM - 8:17 AM
3:25 PM - 5:55 PM

Minor Periods

10:28 PM - 11:58 PM
2:13 PM - 3:43 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: 7:24 AM
Sun Transit: 1:12 PM
Sunset: 7:00 PM
Daylight: 11 hrs 36 mins
Moonrise: 12:12 PM
Moon Transit: 7:20 AM
Moonset: 3:34 PM
Moon Phase: Last Quarter
Moon Illumination: 43.9%

Best Times for Fishing or Hunting

Major Periods

6:50 AM - 9:20 AM
4:27 PM - 6:57 PM

Minor Periods

12:00 AM - 12:00 AM
3:04 PM - 4:34 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: 7:24 AM
Sun Transit: 1:12 PM
Sunset: 7:00 PM
Daylight: 11 hrs 36 mins
Moonrise: 12:12 PM
Moon Transit: 7:20 AM
Moonset: 3:34 PM
Moon Phase: Last Quarter
Moon Illumination: 43.9%

Best Times for Fishing or Hunting

Major Periods

6:50 AM - 9:20 AM
4:27 PM - 6:57 PM

Minor Periods

12:00 AM - 12:00 AM
3:04 PM - 4:34 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: 7:25 AM
Sun Transit: 1:11 PM
Sunset: 6:58 PM
Daylight: 11 hrs 33 mins
Moonrise: 12:12 AM
Moon Transit: 8:20 AM
Moonset: 4:15 PM
Moon Phase: Last Quarter
Moon Illumination: 32.9%

Best Times for Fishing or Hunting

Major Periods

7:50 AM - 10:20 AM
5:25 PM - 7:55 PM

Minor Periods

3:45 PM - 5:15 PM
12:00 AM - 12:00 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: 7:25 AM
Sun Transit: 1:11 PM
Sunset: 6:58 PM
Daylight: 11 hrs 33 mins
Moonrise: 12:12 AM
Moon Transit: 8:20 AM
Moonset: 4:15 PM
Moon Phase: Last Quarter
Moon Illumination: 32.9%

Best Times for Fishing or Hunting

Major Periods

7:50 AM - 10:20 AM
5:25 PM - 7:55 PM

Minor Periods

3:45 PM - 5:15 PM
12:00 AM - 12:00 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: 7:26 AM
Sun Transit: 1:11 PM
Sunset: 6:56 PM
Daylight: 11 hrs 30 mins
Moonrise: 1:30 AM
Moon Transit: 9:15 AM
Moonset: 4:45 PM
Moon Phase: Last Quarter
Moon Illumination: 22.8%

Best Times for Fishing or Hunting

Major Periods

8:45 AM - 11:15 AM
6:19 PM - 8:49 PM

Minor Periods

4:15 PM - 5:45 PM
1:00 AM - 2:30 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: 7:26 AM
Sun Transit: 1:11 PM
Sunset: 6:56 PM
Daylight: 11 hrs 30 mins
Moonrise: 1:30 AM
Moon Transit: 9:15 AM
Moonset: 4:45 PM
Moon Phase: Last Quarter
Moon Illumination: 22.8%

Best Times for Fishing or Hunting

Major Periods

8:45 AM - 11:15 AM
6:19 PM - 8:49 PM

Minor Periods

4:15 PM - 5:45 PM
1:00 AM - 2:30 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: 7:27 AM
Sun Transit: 1:11 PM
Sunset: 6:55 PM
Daylight: 11 hrs 27 mins
Moonrise: 2:49 AM
Moon Transit: 10:07 AM
Moonset: 5:10 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

7:09 PM - 9:39 PM
9:37 AM - 12:07 AM

Minor Periods

4:40 PM - 6:10 PM
2:19 AM - 3:49 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: 7:27 AM
Sun Transit: 1:11 PM
Sunset: 6:55 PM
Daylight: 11 hrs 27 mins
Moonrise: 2:49 AM
Moon Transit: 10:07 AM
Moonset: 5:10 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

7:09 PM - 9:39 PM
9:37 AM - 12:07 AM

Minor Periods

4:40 PM - 6:10 PM
2:19 AM - 3:49 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: 7:28 AM
Sun Transit: 1:11 PM
Sunset: 6:53 PM
Daylight: 11 hrs 24 mins
Moonrise: 4:05 AM
Moon Transit: 10:55 AM
Moonset: 5:31 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

7:56 PM - 10:26 PM
10:25 AM - 12:55 AM

Minor Periods

5:01 PM - 6:31 PM
3:35 AM - 5:05 AM

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