Water Temperature of the Middle Fork San Joaquin River in Mammoth Lakes, CA
Current Water Temperature
Measurement Time: Friday, September 4, 2026, 6:00 PM PDT
Temperature Locations
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Local Points of Interest
Devils Postpile National MonumentStation Name: MF SAN JOAQUIN R NR MAMMOTH LAKES CA
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 7,618 feet
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 mi)
Tuolumne River, Groveland, CA (44.2 mi)
Tuolumne River, Groveland, CA (50 mi)
Cherry Creek, Groveland, CA (51 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
Weather Forecast
Overnight
36°F - Mostly Clear
Saturday
64°F - Sunny
Saturday Night
38°F - Mostly Clear
Sunday
62°F - Sunny
Sunday Night
36°F - Clear
Labor Day
68°F - Sunny
Monday Night
40°F - Mostly Clear
Tuesday
69°F - Sunny then Slight Chance Light Rain
Tuesday Night
45°F - Slight Chance Light Rain
Wednesday
70°F - Chance Light Rain
Wednesday Night
46°F - Slight Chance Light Rain
Thursday
71°F - Chance Showers And Thunderstorms
Thursday Night
45°F - Slight Chance Showers And Thunderstorms then Partly Cloudy
Friday
69°F - Slight Chance Showers And Thunderstorms
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:19 PM
Daylight: 12 hrs 49 mins
Moon Transit: 7:58 AM
Moonset: 3:53 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%
Best Times for Fishing or Hunting
Major Periods
7:28 AM - 9:58 AM3:57 PM - 6:27 PM
Minor Periods
3:23 PM - 4:53 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:19 PM
Daylight: 12 hrs 49 mins
Moon Transit: 7:58 AM
Moonset: 3:53 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%
Best Times for Fishing or Hunting
Major Periods
7:28 AM - 9:58 AM3:57 PM - 6:27 PM
Minor Periods
3:23 PM - 4:53 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:19 PM
Daylight: 12 hrs 49 mins
Moon Transit: 7:58 AM
Moonset: 3:53 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%
Best Times for Fishing or Hunting
Major Periods
7:28 AM - 9:58 AM3:57 PM - 6:27 PM
Minor Periods
3:23 PM - 4:53 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:19 PM
Daylight: 12 hrs 49 mins
Moon Transit: 7:58 AM
Moonset: 3:53 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%
Best Times for Fishing or Hunting
Major Periods
7:28 AM - 9:58 AM3:57 PM - 6:27 PM
Minor Periods
3:23 PM - 4:53 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:17 PM
Daylight: 12 hrs 46 mins
Moon Transit: 9:00 AM
Moonset: 4:45 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%
Best Times for Fishing or Hunting
Major Periods
8:30 AM - 11:00 AM4:58 PM - 7:28 PM
Minor Periods
4:15 PM - 5:45 PM12:40 AM - 2:10 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:17 PM
Daylight: 12 hrs 46 mins
Moon Transit: 9:00 AM
Moonset: 4:45 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%
Best Times for Fishing or Hunting
Major Periods
8:30 AM - 11:00 AM4:58 PM - 7:28 PM
Minor Periods
4:15 PM - 5:45 PM12:40 AM - 2:10 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:16 PM
Daylight: 12 hrs 44 mins
Moon Transit: 10:00 AM
Moonset: 5:27 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%
Best Times for Fishing or Hunting
Major Periods
5:57 PM - 8:27 PM9:30 AM - 12:00 AM
Minor Periods
4:57 PM - 6:27 PM1:54 AM - 3:24 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:54 AM
Sunset: 7:16 PM
Daylight: 12 hrs 44 mins
Moon Transit: 10:00 AM
Moonset: 5:27 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%
Best Times for Fishing or Hunting
Major Periods
5:57 PM - 8:27 PM9:30 AM - 12:00 AM
Minor Periods
4:57 PM - 6:27 PM1:54 AM - 3:24 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 7:14 PM
Daylight: 12 hrs 42 mins
Moon Transit: 10:56 AM
Moonset: 6:02 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%
Best Times for Fishing or Hunting
Major Periods
6:51 PM - 9:21 PM10:26 AM - 12:56 AM
Minor Periods
5:32 PM - 7:02 PM3:08 AM - 4:38 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 7:14 PM
Daylight: 12 hrs 42 mins
Moon Transit: 10:56 AM
Moonset: 6:02 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%
Best Times for Fishing or Hunting
Major Periods
6:51 PM - 9:21 PM10:26 AM - 12:56 AM
Minor Periods
5:32 PM - 7:02 PM3:08 AM - 4:38 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 7:13 PM
Daylight: 12 hrs 39 mins
Moon Transit: 11:47 AM
Moonset: 6:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%
Best Times for Fishing or Hunting
Major Periods
7:41 PM - 10:11 PM11:17 AM - 1:47 PM
Minor Periods
6:02 PM - 7:32 PM4:22 AM - 5:52 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 7:13 PM
Daylight: 12 hrs 39 mins
Moon Transit: 11:47 AM
Moonset: 6:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%
Best Times for Fishing or Hunting
Major Periods
7:41 PM - 10:11 PM11:17 AM - 1:47 PM
Minor Periods
6:02 PM - 7:32 PM4:22 AM - 5:52 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 7:11 PM
Daylight: 12 hrs 37 mins
Moon Transit: 12:35 AM
Moonset: 6:58 PM
Moon Phase: New
Moon Illumination: 0.0%
Best Times for Fishing or Hunting
Major Periods
8:28 PM - 10:58 PM12:05 AM - 2:35 PM
Minor Periods
6:28 PM - 7:58 PM5:33 AM - 7:03 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:53 AM
Sunset: 7:11 PM
Daylight: 12 hrs 37 mins
Moon Transit: 12:35 AM
Moonset: 6:58 PM
Moon Phase: New
Moon Illumination: 0.0%
Best Times for Fishing or Hunting
Major Periods
8:28 PM - 10:58 PM12:05 AM - 2:35 PM
Minor Periods
6:28 PM - 7:58 PM5:33 AM - 7:03 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:52 AM
Sunset: 7:10 PM
Daylight: 12 hrs 35 mins
Moon Transit: 1:21 PM
Moonset: 7:22 PM
Moon Phase: New
Moon Illumination: 1.7%
Best Times for Fishing or Hunting
Major Periods
9:14 PM - 11:44 PM12:51 AM - 3:21 PM
Minor Periods
6:52 PM - 8:22 PM6:40 AM - 8:10 AM
Action Rating: 5 out of 5
