Water Temperature of the Middle Fork San Joaquin River in Mammoth Lakes, CA

Current Water Temperature

67.3°F

Measurement Time: Wednesday, July 30, 2025, 11:00 AM PDT

Temperature Locations

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Local Points of Interest

Devils Postpile National Monument

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Middle Fork San Joaquin River

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

72°F
Sunny
Conditions: Sunny
Humidity: 20%
Feels Like: 74.7°F
Wind: SW 14.1 mph
Wind Gusts: 16.2 mph
Pressure: 30.25 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 1.2

Five Day Weather Forecast

Sunny
Wed
H: 69°F
L: 47°F
Sunny
Thu
H: 73°F
L: 44°F
Sunny
Fri
H: 73°F
L: 49°F
Sunny
Sat
H: 77°F
L: 42°F
Sunny
Sun
H: 77°F
L: 44°F

Air Quality

AQI: 1 - Good
PM2.5: 3.69 μg/m3
PM10: 3.86 μg/m3
Carbon Monoxide: 193 μg/m3
Nitrogen Dioxide: 5.54 μg/m3
Sulphur Dioxide: 0.67 μg/m3
Ozone: 84 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:02 PM
Sunset: 8:06 PM
Daylight: 14 hrs 7 mins
Moonrise: 11:58 AM
Moon Transit: 5:36 PM
Moonset: 11:06 PM
Moon Phase: Waxing Crescent
Moon Illumination: 26.2%

Best Times for Fishing or Hunting

Major Periods

12:46 AM - 3:16 AM
5:06 PM - 7:36 PM

Minor Periods

12:00 AM - 12:00 AM
11:28 AM - 12:58 AM

Action Rating: 2 out of 5

Wednesday, July 30, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 58.5°F
Average Humidity: 49%
Chance of Rain: 0%
Wind: 17.7 mph
UV Index: 2.9

Air Quality

AQI: 1 - Good
PM2.5: 5.95 μg/m3
PM10: 6.77 μg/m3
Carbon Monoxide: 194.07 μg/m3
Nitrogen Dioxide: 2.26 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 111.88 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:02 PM
Sunset: 8:06 PM
Daylight: 14 hrs 7 mins
Moonrise: 11:58 AM
Moon Transit: 5:36 PM
Moonset: 11:06 PM
Moon Phase: Waxing Crescent
Moon Illumination: 26.2%

Best Times for Fishing or Hunting

Major Periods

12:46 AM - 3:16 AM
5:06 PM - 7:36 PM

Minor Periods

12:00 AM - 12:00 AM
11:28 AM - 12:58 AM

Action Rating: 2 out of 5

Thursday, July 31, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 57.6°F
Average Humidity: 38%
Chance of Rain: 0%
Wind: 17 mph
UV Index: 3

Air Quality

AQI: 1 - Good
PM2.5: 2.83 μg/m3
PM10: 3.04 μg/m3
Carbon Monoxide: 173.93 μg/m3
Nitrogen Dioxide: 2.87 μg/m3
Sulphur Dioxide: 0.57 μg/m3
Ozone: 106.88 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:02 PM
Sunset: 8:05 PM
Daylight: 14 hrs 6 mins
Moonrise: 12:58 AM
Moon Transit: 6:17 PM
Moonset: 12:06 AM
Moon Phase: First Quarter
Moon Illumination: 36.7%

Best Times for Fishing or Hunting

Major Periods

1:27 AM - 3:57 AM
5:47 PM - 8:17 PM

Minor Periods

12:28 AM - 1:58 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, August 1, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 59.4°F
Average Humidity: 30%
Chance of Rain: 0%
Wind: 17 mph
UV Index: 3.1

Air Quality

AQI: 1 - Good
PM2.5: 3.24 μg/m3
PM10: 3.44 μg/m3
Carbon Monoxide: 164.94 μg/m3
Nitrogen Dioxide: 2.69 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 107.76 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:02 PM
Sunset: 8:04 PM
Daylight: 14 hrs 4 mins
Moonrise: 1:58 PM
Moon Transit: 7:01 PM
Moonset: 12:31 AM
Moon Phase: First Quarter
Moon Illumination: 47.9%

Best Times for Fishing or Hunting

Major Periods

2:09 AM - 4:39 AM
6:31 PM - 9:01 PM

Minor Periods

1:28 PM - 2:58 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, August 2, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 58°F
Average Humidity: 27%
Chance of Rain: 0%
Wind: 16.3 mph
UV Index: 3.1

Air Quality

AQI: 1 - Good
PM2.5: 3.16 μg/m3
PM10: 3.38 μg/m3
Carbon Monoxide: 165.07 μg/m3
Nitrogen Dioxide: 2.27 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 108.88 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:02 PM
Sunset: 8:03 PM
Daylight: 14 hrs 2 mins
Moonrise: 3:00 PM
Moon Transit: 7:48 PM
Moonset: 12:59 AM
Moon Phase: First Quarter
Moon Illumination: 59.1%

Best Times for Fishing or Hunting

Major Periods

2:54 AM - 5:24 AM
7:18 PM - 9:48 PM

Minor Periods

2:30 PM - 4:00 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, August 3, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 58.7°F
Average Humidity: 21%
Chance of Rain: 0%
Wind: 17.2 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 3.6 μg/m3
PM10: 3.76 μg/m3
Carbon Monoxide: 197.26 μg/m3
Nitrogen Dioxide: 3.99 μg/m3
Sulphur Dioxide: 0.75 μg/m3
Ozone: 96.46 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:02 PM
Sunset: 8:02 PM
Daylight: 14 hrs mins
Moonrise: 4:01 PM
Moon Transit: 8:38 PM
Moonset: 12:32 AM
Moon Phase: First Quarter
Moon Illumination: 70.0%

Best Times for Fishing or Hunting

Major Periods

3:42 AM - 6:12 AM
8:08 PM - 10:38 PM

Minor Periods

3:31 PM - 5:01 PM
12:02 AM - 1:32 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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