Water Temperature of the Snake River in Flagg Ranch, WY
Current Water Temperature
Measurement Time: Friday, July 18, 2025, 11:30 AM MDT
Temperature Locations
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Station Name: SNAKE RIVER AB JACKSON LAKE AT FLAGG RANCH WY
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 6,818 feet / 2,078 meters
Nearest Address:
John D Rockefeller Jr Pkwy
Flagg Ranch, WY 83414
Teton County
GPS Coordinates: 44.09888889, -110.6675
Nearby Water Temperatures
Snake River, Moran, WY (17.1 mi)Buffalo Fork River, Moran, WY (21.3 mi)
Firehole River, Yellowstone National Park, WY (26.1 mi)
Snake River, Moose, WY (30.8 mi)
Blackrock Creek, Moran, WY (31.6 mi)
Firehole River, Yellowstone National Park, WY (37.3 mi)
Gibbon River, Yellowstone National Park, WY (38.6 mi)
Fish Creek, Wilson, WY (42.6 mi)
Madison River, West Yellowstone, MT (43.3 mi)
Tantalus Creek, Yellowstone National Park, WY (43.8 mi)
Cache Creek, Jackson, WY (44.7 mi)
Flat Creek, Jackson, WY (44.7 mi)
Snake River, Jackson, WY (50.3 mi)
Hoback River, Hoback, WY (54.8 mi)
Lamar River, Yellowstone National Park, WY (58.9 mi)
Weather for Flagg Ranch, Wyoming
Current Weather

Humidity: 45%
Feels Like: 68.2°F
Wind: NNW 8.5 mph
Wind Gusts: 9.8 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 1.3
Five Day Weather Forecast

Fri
H: 78°F
L: 47°F

Sat
H: 76°F
L: 46°F

Sun
H: 76°F
L: 44°F

Mon
H: 76°F
L: 48°F

Tue
H: 78°F
L: 45°F
Air Quality
Nitrogen Dioxide: 7.4 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 109 μg/m3
Astronomical
Sun Transit: 1:29 PM
Sunset: 9:01 PM
Daylight: 15 hrs 4 mins
Moon Transit: 7:35 AM
Moonset: 3:02 PM
Moon Phase: Last Quarter
Moon Illumination: 33.4%
Best Times for Fishing or Hunting
Major Periods
7:05 AM - 9:35 AM4:40 PM - 7:10 PM
Minor Periods
2:32 PM - 4:02 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Red Flag Warning issued July 18 at 1:40AM MDT until July 19 at 12:00AM MDT by NWS Pocatello ID
Effective: Fri July 18, 2025, 1:40 AM
Expires: Fri July 18, 2025, 3:00 PM
...RED FLAG WARNING IN EFFECT 1PM TO MIDNIGHT MDT FRIDAY FOR SCATTERED THUNDERSTORMS AND GUSTY OUTFLOW WINDS FOR IDAHO FIRE WEATHER ZONES 427 AND 413... * AFFECTED AREA...Fire Weather Zone 413 Caribou Range/Caribou NF and Fire Weather Zone 427 Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River. * IMPACTS...Critical fire weather conditions are expected this afternoon. Lightning may generate new fire starts. Any new fire starts or existing fires may spread rapidly. * THUNDERSTORMS...25 to 45 percent coverage expected. * OUTFLOW WINDS...A dry low level environment will promote the potential for storms to produce gusty outflow wind gusts in excess of 40 mph, locally higher to 50 mph.
A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly based on these criteria for Southeastern Idaho: - Relative humidity at or below 15 percent and wind gusts of at least 25 mph in the mountains, or 30 mph in the Snake Plain. - Thunderstorm coverage of 25 percent, without specific rainfall criteria. - Other high impact events deemed critical by the National Weather Service and area fire management agencies.
Red Flag Warning issued July 18 at 1:40AM MDT until July 19 at 12:00AM MDT by NWS Pocatello ID
Effective: Fri July 18, 2025, 1:40 AM
Expires: Fri July 18, 2025, 3:00 PM
...RED FLAG WARNING IN EFFECT 1PM TO MIDNIGHT MDT FRIDAY FOR SCATTERED THUNDERSTORMS AND GUSTY OUTFLOW WINDS FOR IDAHO FIRE WEATHER ZONES 427 AND 413... * AFFECTED AREA...Fire Weather Zone 413 Caribou Range/Caribou NF and Fire Weather Zone 427 Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River. * IMPACTS...Critical fire weather conditions are expected this afternoon. Lightning may generate new fire starts. Any new fire starts or existing fires may spread rapidly. * THUNDERSTORMS...25 to 45 percent coverage expected. * OUTFLOW WINDS...A dry low level environment will promote the potential for storms to produce gusty outflow wind gusts in excess of 40 mph, locally higher to 50 mph.
A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly based on these criteria for Southeastern Idaho: - Relative humidity at or below 15 percent and wind gusts of at least 25 mph in the mountains, or 30 mph in the Snake Plain. - Thunderstorm coverage of 25 percent, without specific rainfall criteria. - Other high impact events deemed critical by the National Weather Service and area fire management agencies.
Weather Forecast
Average Temperature: 62.9°F
Average Humidity: 46%
Wind: 13.9 mph
UV Index: 2.5
Air Quality
Nitrogen Dioxide: 5.41 μg/m3
Sulphur Dioxide: 0.47 μg/m3
Ozone: 116.56 μg/m3
Astronomical
Sun Transit: 1:29 PM
Sunset: 9:01 PM
Daylight: 15 hrs 4 mins
Moon Transit: 7:35 AM
Moonset: 3:02 PM
Moon Phase: Last Quarter
Moon Illumination: 33.4%
Best Times for Fishing or Hunting
Major Periods
7:05 AM - 9:35 AM4:40 PM - 7:10 PM
Minor Periods
2:32 PM - 4:02 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 61.6°F
Average Humidity: 54%
Wind: 19.5 mph
UV Index: 2.8
Air Quality
Nitrogen Dioxide: 4 μg/m3
Sulphur Dioxide: 0.49 μg/m3
Ozone: 116.92 μg/m3
Astronomical
Sun Transit: 1:29 PM
Sunset: 9:00 PM
Daylight: 15 hrs 2 mins
Moon Transit: 8:29 AM
Moonset: 4:23 PM
Moon Phase: Last Quarter
Moon Illumination: 23.2%
Best Times for Fishing or Hunting
Major Periods
7:59 AM - 10:29 AM5:36 PM - 8:06 PM
Minor Periods
3:53 PM - 5:23 PM12:22 AM - 1:52 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 62.2°F
Average Humidity: 33%
Wind: 18.3 mph
UV Index: 2.9
Air Quality
Nitrogen Dioxide: 3.62 μg/m3
Sulphur Dioxide: 0.49 μg/m3
Ozone: 103.4 μg/m3
Astronomical
Sun Transit: 1:29 PM
Sunset: 8:59 PM
Daylight: 15 hrs 1 mins
Moon Transit: 9:27 AM
Moonset: 5:43 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.4%
Best Times for Fishing or Hunting
Major Periods
8:57 AM - 11:27 AM6:36 PM - 9:06 PM
Minor Periods
5:13 PM - 6:43 PM12:55 AM - 2:25 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 63.4°F
Average Humidity: 37%
Wind: 14.1 mph
UV Index: 2.5
Air Quality
Nitrogen Dioxide: 3.97 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 110 μg/m3
Astronomical
Sun Transit: 1:29 PM
Sunset: 8:58 PM
Daylight: 14 hrs 59 mins
Moon Transit: 10:29 AM
Moonset: 6:56 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.4%
Best Times for Fishing or Hunting
Major Periods
7:39 PM - 10:09 PM9:59 AM - 12:29 AM
Minor Periods
6:26 PM - 7:56 PM1:39 AM - 3:09 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 62.5°F
Average Humidity: 32%
Wind: 12.1 mph
UV Index: 2.4
Air Quality
Nitrogen Dioxide: 5.93 μg/m3
Sulphur Dioxide: 0.63 μg/m3
Ozone: 115.54 μg/m3
Astronomical
Sun Transit: 1:29 PM
Sunset: 8:57 PM
Daylight: 14 hrs 57 mins
Moon Transit: 11:33 AM
Moonset: 7:58 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.6%
Best Times for Fishing or Hunting
Major Periods
8:42 PM - 11:12 PM11:03 AM - 1:33 PM
Minor Periods
7:28 PM - 8:58 PM2:36 AM - 4:06 AM
Action Rating: 4 out of 5