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

Current Water Temperature

50.4°F

Measurement Time: Wednesday, March 25, 2026, 11:00 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

46°F
Cloudy
Cloudy
39.6°F
46°F
68%
SW 17.7 mph
20.3 mph
39.6°F
36.6°F
0 in
71%
6 mi
1011 mbar
1.5

Five Day Weather Forecast

Partly Cloudy
Wed
H: 50°F
L: 38°F
Partly Cloudy
Thu
H: 35°F
L: 22°F
Sunny
Fri
H: 45°F
L: 18°F
Partly Cloudy
Sat
H: 51°F
L: 34°F
Sunny
Sun
H: 54°F
L: 29°F

Air Quality

AQI: 1 - Good
PM2.5: 3.38 μg/m3
PM10: 10.78 μg/m3
Carbon Monoxide: 130.68 μg/m3
Nitrogen Dioxide: 1.68 μg/m3
Sulphur Dioxide: 0.88 μg/m3
Ozone: 98 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:00 AM
Sunset: 7:42 PM
Daylight: 12 hrs 25 mins
Moonrise: 11:23 AM
Moon Transit: 7:49 PM
Moonset: 3:15 AM
Moon Phase: First Quarter
Moon Illumination: 45.1%

Best Times for Fishing or Hunting

Major Periods

3:54 AM - 6:24 AM
7:19 PM - 9:49 PM

Minor Periods

10:53 AM - 12:23 AM
2:45 AM - 4:15 AM

Action Rating: 3 out of 5

Wind Advisory issued March 25 at 12:38AM MDT until March 25 at 9:00PM MDT by NWS Pocatello ID

Effective: Wed March 25, 2026, 12:38 AM
Expires: Wed March 25, 2026, 3:00 PM

* WHAT...Southwest winds 25 to 35 mph with gusts up to 55 mph expected. * WHERE...Beaverhead - Lemhi Highlands, Arco/Mud Lake Desert, and Upper Snake River Plain. * WHEN...From 9 AM this morning to 9 PM MDT this evening. * IMPACTS...Gusty winds could make driving difficult, especially for high profile vehicles. Unsecured objects may be blown around. Blowing dust in some areas may create very low visibility.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. If you encounter blowing dust, slow down but do not stop. Proceed with caution.


Wind Advisory issued March 25 at 10:47AM MDT until March 25 at 9:00PM MDT by NWS Pocatello ID

Effective: Wed March 25, 2026, 10:47 AM
Expires: Wed March 25, 2026, 9:00 PM

* WHAT...Southwest winds 25 to 35 mph with gusts up to 55 mph. * WHERE...Beaverhead - Lemhi Highlands, Arco/Mud Lake Desert, and Upper Snake River Plain. * WHEN...Until 9 PM MDT this evening. * IMPACTS...Gusty winds could make driving difficult, especially for high profile vehicles. Unsecured objects may be blown around. Blowing dust in some areas may create very low visibility.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. If you encounter blowing dust, slow down but do not stop. Proceed with caution.
Wednesday, March 25, 2026

Weather Forecast

Partly Cloudy
50.4°F
37.6°F
42.7°F
75%
0 in
0%
0%
18.3 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 3.63 μg/m3
PM10: 6.72 μg/m3
Carbon Monoxide: 113.4 μg/m3
Nitrogen Dioxide: 1.38 μg/m3
Sulphur Dioxide: 0.99 μg/m3
Ozone: 85.52 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:00 AM
Sunset: 7:42 PM
Daylight: 12 hrs 25 mins
Moonrise: 11:23 AM
Moon Transit: 7:49 PM
Moonset: 3:15 AM
Moon Phase: First Quarter
Moon Illumination: 45.1%

Best Times for Fishing or Hunting

Major Periods

3:54 AM - 6:24 AM
7:19 PM - 9:49 PM

Minor Periods

10:53 AM - 12:23 AM
2:45 AM - 4:15 AM

Action Rating: 3 out of 5

Thursday, March 26, 2026

Weather Forecast

Partly Cloudy
35.2°F
22.2°F
32.5°F
58%
0 in
0%
0%
15.9 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 2.62 μg/m3
PM10: 6.32 μg/m3
Carbon Monoxide: 128.24 μg/m3
Nitrogen Dioxide: 1.38 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 105.72 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 12:00 AM
Sunset: 7:43 PM
Daylight: 12 hrs 28 mins
Moonrise: 12:36 AM
Moon Transit: 8:49 PM
Moonset: 4:09 AM
Moon Phase: First Quarter
Moon Illumination: 56.4%

Best Times for Fishing or Hunting

Major Periods

4:56 AM - 7:26 AM
8:19 PM - 10:49 PM

Minor Periods

12:06 AM - 1:36 PM
3:39 AM - 5:09 AM

Action Rating: 3 out of 5

Friday, March 27, 2026

Weather Forecast

Sunny
44.6°F
18.3°F
31.5°F
36%
0 in
0%
0%
10.3 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 1.95 μg/m3
PM10: 3.43 μg/m3
Carbon Monoxide: 133.4 μg/m3
Nitrogen Dioxide: 1.73 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 121.64 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:00 AM
Sunset: 7:45 PM
Daylight: 12 hrs 32 mins
Moonrise: 1:53 PM
Moon Transit: 9:44 PM
Moonset: 4:50 AM
Moon Phase: First Quarter
Moon Illumination: 67.4%

Best Times for Fishing or Hunting

Major Periods

5:54 AM - 8:24 AM
9:14 PM - 11:44 PM

Minor Periods

1:23 PM - 2:53 PM
4:20 AM - 5:50 AM

Action Rating: 2 out of 5

Saturday, March 28, 2026

Weather Forecast

Partly Cloudy
50.7°F
33.6°F
40.7°F
39%
0 in
0%
0%
15.7 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 2.06 μg/m3
PM10: 4.05 μg/m3
Carbon Monoxide: 144.8 μg/m3
Nitrogen Dioxide: 2.02 μg/m3
Sulphur Dioxide: 0.86 μg/m3
Ozone: 115.16 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 1:28 PM
Sunset: 7:46 PM
Daylight: 12 hrs 35 mins
Moonrise: 3:09 PM
Moon Transit: 10:35 PM
Moonset: 5:20 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 77.5%

Best Times for Fishing or Hunting

Major Periods

6:47 AM - 9:17 AM
12:00 AM - 12:00 AM

Minor Periods

2:39 PM - 4:09 PM
4:50 AM - 6:20 AM

Action Rating: 3 out of 5

Sunday, March 29, 2026

Weather Forecast

Sunny
53.6°F
29.1°F
42°F
43%
0 in
0%
0%
16.1 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 4.89 μg/m3
PM10: 8.39 μg/m3
Carbon Monoxide: 141.43 μg/m3
Nitrogen Dioxide: 1.97 μg/m3
Sulphur Dioxide: 0.98 μg/m3
Ozone: 114.77 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 1:27 PM
Sunset: 7:47 PM
Daylight: 12 hrs 38 mins
Moonrise: 4:24 PM
Moon Transit: 11:22 PM
Moonset: 5:45 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

7:36 AM - 10:06 AM
12:00 AM - 12:00 AM

Minor Periods

3:54 PM - 5:24 PM
5:15 AM - 6:45 AM

Action Rating: 4 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.

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