Water Temperature of the Middle Fork San Joaquin River in Mammoth Lakes, CA
Current Water Temperature
Measurement Time: Thursday, July 10, 2025, 8:00 AM PDT
Temperature Locations
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Local Points of Interest
Devils Postpile National MonumentSponsored Content
Station Name: MF SAN JOAQUIN R NR MAMMOTH LAKES CA
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 7,618 feet / 2,322 meters
Nearest Address:
A12 Devils Postpile Campground Rd
Mammoth Lakes, CA 93546
Madera County
GPS Coordinates: 37.63194444, -119.0863889
Nearby Water Temperatures
Deadman Creek, Mammoth Lakes, CA (11.5 mi)Hot Creek, Mammoth Lakes, CA (12.3 mi)
Hot Creek, Mammoth Lakes, CA (12.9 mi)
Hot Creek, Mammoth Lakes, CA (14.9 mi)
Merced River, Yosemite Valley, CA (26.7 mi)
Tuolumne River, Groveland, CA (37.0 mi)
Tuolumne River, Groveland, CA (44.2 mi)
Tuolumne River, Groveland, CA (50.0 mi)
Cherry Creek, Groveland, CA (51.0 mi)
Tuolumne River, Groveland, CA (51.3 mi)
San Joaquin River, Friant, CA (56.8 mi)
Walker Lake, Walker Lake, NV (76.4 mi)
Walker Lake, Walker Lake, NV (79.8 mi)
Trout Creek, South Lake Tahoe, CA (101.1 mi)
Upper Truckee River, South Lake Tahoe, CA (101.8 mi)
Weather for Mammoth Lakes, California
Current Weather

Humidity: 11%
Feels Like: 80.9°F
Wind: SW 9.8 mph
Wind Gusts: 11.3 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 6.6
Five Day Weather Forecast

Thu
H: 78°F
L: 46°F

Fri
H: 80°F
L: 52°F

Sat
H: 80°F
L: 55°F

Sun
H: 85°F
L: 56°F

Mon
H: 87°F
L: 56°F
Air Quality
Nitrogen Dioxide: 4.53 μg/m3
Sulphur Dioxide: 1.01 μg/m3
Ozone: 107 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:20 PM
Daylight: 14 hrs 36 mins
Moon Transit: 12:35 AM
Moonset: 5:11 AM
Moon Phase: Full
Moon Illumination: 99.8%
Best Times for Fishing or Hunting
Major Periods
12:05 AM - 2:35 AM8:31 AM - 11:01 AM
Minor Periods
8:18 PM - 9:48 PM4:41 AM - 6:11 AM
Action Rating: 5 out of 5
Heat Advisory issued July 10 at 9:44AM PDT until July 15 at 11:00PM PDT by NWS Hanford CA
Effective: Thu July 10, 2025, 9:44 AM
Expires: Thu July 10, 2025, 5:45 PM
* WHAT...High temperatures up to 105 expected. * WHERE...The San Joaquin Valley area of central California and a portion of the Sierra Nevada Foothills. * WHEN...From 11 AM Friday to 11 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Heat Advisory issued July 10 at 9:44AM PDT until July 15 at 11:00PM PDT by NWS Hanford CA
Effective: Thu July 10, 2025, 9:44 AM
Expires: Thu July 10, 2025, 5:45 PM
* WHAT...High temperatures up to 105 expected. * WHERE...The San Joaquin Valley area of central California and a portion of the Sierra Nevada Foothills. * WHEN...From 11 AM Friday to 11 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Weather Forecast
Average Temperature: 62.1°F
Average Humidity: 29%
Wind: 12.5 mph
UV Index: 3.4
Air Quality
Nitrogen Dioxide: 2.69 μg/m3
Sulphur Dioxide: 0.79 μg/m3
Ozone: 117.44 μg/m3
Astronomical
Sun Transit: 1:01 PM
Sunset: 8:20 PM
Daylight: 14 hrs 36 mins
Moon Transit: 12:35 AM
Moonset: 5:11 AM
Moon Phase: Full
Moon Illumination: 99.8%
Best Times for Fishing or Hunting
Major Periods
12:05 AM - 2:35 AM8:31 AM - 11:01 AM
Minor Periods
8:18 PM - 9:48 PM4:41 AM - 6:11 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: 65.5°F
Average Humidity: 25%
Wind: 15.2 mph
UV Index: 3.5
Air Quality
Nitrogen Dioxide: 2.73 μg/m3
Sulphur Dioxide: 0.89 μg/m3
Ozone: 124.32 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:19 PM
Daylight: 14 hrs 35 mins
Moon Transit: 1:30 AM
Moonset: 6:17 AM
Moon Phase: Full
Moon Illumination: 97.4%
Best Times for Fishing or Hunting
Major Periods
1:00 AM - 3:30 AM9:25 AM - 11:55 AM
Minor Periods
8:56 PM - 10:26 PM5:47 AM - 7:17 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 67.2°F
Average Humidity: 29%
Wind: 14.8 mph
UV Index: 3.3
Air Quality
Nitrogen Dioxide: 2.52 μg/m3
Sulphur Dioxide: 1.13 μg/m3
Ozone: 124.56 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:19 PM
Daylight: 14 hrs 34 mins
Moon Transit: 2:22 AM
Moonset: 7:25 AM
Moon Phase: Full
Moon Illumination: 92.7%
Best Times for Fishing or Hunting
Major Periods
1:52 AM - 4:22 AM10:16 AM - 12:46 AM
Minor Periods
9:29 PM - 10:59 PM6:55 AM - 8:25 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 68.5°F
Average Humidity: 30%
Wind: 15.2 mph
UV Index: 3.3
Air Quality
Nitrogen Dioxide: 2.85 μg/m3
Sulphur Dioxide: 1.91 μg/m3
Ozone: 135.36 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:19 PM
Daylight: 14 hrs 33 mins
Moon Transit: 3:12 AM
Moonset: 8:35 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.7%
Best Times for Fishing or Hunting
Major Periods
2:42 AM - 5:12 AM11:06 AM - 1:36 PM
Minor Periods
9:57 PM - 11:27 PM8:05 AM - 9:35 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 69.6°F
Average Humidity: 23%
Wind: 17.9 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 3.86 μg/m3
Sulphur Dioxide: 1.72 μg/m3
Ozone: 122.54 μg/m3
Astronomical
Sun Transit: 1:02 PM
Sunset: 8:18 PM
Daylight: 14 hrs 32 mins
Moon Transit: 4:00 AM
Moonset: 9:43 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.9%
Best Times for Fishing or Hunting
Major Periods
3:30 AM - 6:00 AM11:53 AM - 2:23 PM
Minor Periods
10:23 PM - 11:53 PM9:13 AM - 10:43 AM
Action Rating: 3 out of 5