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

Current Water Temperature

61.5°F

Measurement Time: Wednesday, September 2, 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

61°F
Mostly Sunny
Mostly Sunny
44%
SW 13 mph
39°F

Weather Forecast

Mostly Sunny
This Afternoon
66°F - Mostly Sunny
Partly Cloudy
Tonight
34°F - Partly Cloudy
Sunny
Thursday
62°F - Sunny
Partly Cloudy
Thursday Night
37°F - Partly Cloudy
Sunny
Friday
66°F - Sunny
Mostly Clear
Friday Night
38°F - Mostly Clear
Sunny
Saturday
67°F - Sunny
Mostly Clear
Saturday Night
38°F - Mostly Clear
Mostly Sunny then Slight Chance Showers And Thunderstorms
Sunday
68°F - Mostly Sunny then Slight Chance Showers And Thunderstorms
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Sunday Night
41°F - Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Showers And Thunderstorms
Labor Day
59°F - Showers And Thunderstorms
Chance Showers And Thunderstorms
Monday Night
35°F - Chance Showers And Thunderstorms
Chance Rain Showers
Tuesday
58°F - Chance Rain Showers
Slight Chance Showers And Thunderstorms
Tuesday Night
34°F - Slight Chance Showers And Thunderstorms

Astronomical

Sunrise: 6:48 AM
Sun Transit: 1:22 PM
Sunset: 7:58 PM
Daylight: 13 hrs 10 mins
Moonrise: 10:18 PM
Moon Transit: 5:23 AM
Moonset: 1:18 PM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:53 AM - 7:23 AM
2:28 PM - 4:58 PM

Minor Periods

9:48 PM - 11:18 PM
12:48 AM - 2:18 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: 6:48 AM
Sun Transit: 1:22 PM
Sunset: 7:58 PM
Daylight: 13 hrs 10 mins
Moonrise: 10:18 PM
Moon Transit: 5:23 AM
Moonset: 1:18 PM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:53 AM - 7:23 AM
2:28 PM - 4:58 PM

Minor Periods

9:48 PM - 11:18 PM
12:48 AM - 2:18 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: 6:48 AM
Sun Transit: 1:22 PM
Sunset: 7:58 PM
Daylight: 13 hrs 10 mins
Moonrise: 10:18 PM
Moon Transit: 5:23 AM
Moonset: 1:18 PM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:53 AM - 7:23 AM
2:28 PM - 4:58 PM

Minor Periods

9:48 PM - 11:18 PM
12:48 AM - 2:18 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: 6:49 AM
Sun Transit: 1:22 PM
Sunset: 7:56 PM
Daylight: 13 hrs 7 mins
Moonrise: 11:01 PM
Moon Transit: 6:20 AM
Moonset: 2:36 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:50 AM - 8:20 AM
3:26 PM - 5:56 PM

Minor Periods

12:00 AM - 12:00 AM
2:06 PM - 3:36 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: 6:49 AM
Sun Transit: 1:22 PM
Sunset: 7:56 PM
Daylight: 13 hrs 7 mins
Moonrise: 11:01 PM
Moon Transit: 6:20 AM
Moonset: 2:36 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:50 AM - 8:20 AM
3:26 PM - 5:56 PM

Minor Periods

12:00 AM - 12:00 AM
2:06 PM - 3:36 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: 6:50 AM
Sun Transit: 1:22 PM
Sunset: 7:54 PM
Daylight: 13 hrs 4 mins
Moonrise: 12:01 AM
Moon Transit: 7:21 AM
Moonset: 3:47 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:51 AM - 9:21 AM
4:28 PM - 6:58 PM

Minor Periods

3:17 PM - 4:47 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: 6:50 AM
Sun Transit: 1:22 PM
Sunset: 7:54 PM
Daylight: 13 hrs 4 mins
Moonrise: 12:01 AM
Moon Transit: 7:21 AM
Moonset: 3:47 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:51 AM - 9:21 AM
4:28 PM - 6:58 PM

Minor Periods

3:17 PM - 4:47 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: 6:51 AM
Sun Transit: 1:21 PM
Sunset: 7:52 PM
Daylight: 13 hrs 1 mins
Moonrise: 12:57 AM
Moon Transit: 8:23 AM
Moonset: 4:48 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:53 AM - 10:23 AM
5:31 PM - 8:01 PM

Minor Periods

4:18 PM - 5:48 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: 6:51 AM
Sun Transit: 1:21 PM
Sunset: 7:52 PM
Daylight: 13 hrs 1 mins
Moonrise: 12:57 AM
Moon Transit: 8:23 AM
Moonset: 4:48 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:53 AM - 10:23 AM
5:31 PM - 8:01 PM

Minor Periods

4:18 PM - 5:48 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: 6:52 AM
Sun Transit: 1:21 PM
Sunset: 7:50 PM
Daylight: 12 hrs 58 mins
Moonrise: 1:06 AM
Moon Transit: 9:26 AM
Moonset: 5:36 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:56 AM - 11:26 AM
6:33 PM - 9:03 PM

Minor Periods

5:06 PM - 6:36 PM
12:36 AM - 2:06 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: 6:52 AM
Sun Transit: 1:21 PM
Sunset: 7:50 PM
Daylight: 12 hrs 58 mins
Moonrise: 1:06 AM
Moon Transit: 9:26 AM
Moonset: 5:36 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:56 AM - 11:26 AM
6:33 PM - 9:03 PM

Minor Periods

5:06 PM - 6:36 PM
12:36 AM - 2:06 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: 6:53 AM
Sun Transit: 1:21 PM
Sunset: 7:48 PM
Daylight: 12 hrs 55 mins
Moonrise: 2:24 AM
Moon Transit: 10:26 AM
Moonset: 6:14 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

7:31 PM - 10:01 PM
9:56 AM - 12:26 AM

Minor Periods

5:44 PM - 7:14 PM
1:54 AM - 3:24 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: 6:53 AM
Sun Transit: 1:21 PM
Sunset: 7:48 PM
Daylight: 12 hrs 55 mins
Moonrise: 2:24 AM
Moon Transit: 10:26 AM
Moonset: 6:14 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

7:31 PM - 10:01 PM
9:56 AM - 12:26 AM

Minor Periods

5:44 PM - 7:14 PM
1:54 AM - 3:24 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: 6:54 AM
Sun Transit: 1:20 PM
Sunset: 7:46 PM
Daylight: 12 hrs 52 mins
Moonrise: 3:45 AM
Moon Transit: 11:21 AM
Moonset: 6:43 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

8:25 PM - 10:55 PM
10:51 AM - 1:21 PM

Minor Periods

6:13 PM - 7:43 PM
3:15 AM - 4:45 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: 6:54 AM
Sun Transit: 1:20 PM
Sunset: 7:46 PM
Daylight: 12 hrs 52 mins
Moonrise: 3:45 AM
Moon Transit: 11:21 AM
Moonset: 6:43 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

8:25 PM - 10:55 PM
10:51 AM - 1:21 PM

Minor Periods

6:13 PM - 7:43 PM
3:15 AM - 4:45 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