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

Current Water Temperature

45.3°F

Measurement Time: Monday, June 8, 2026, 8:00 PM PDT

Temperature Locations

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Local Points of Interest

Devils Postpile National Monument

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

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

41.2°F
Clear
Clear
36.1°F
41.2°F
39%
SSW 7.8 mph
14.1 mph
36.2°F
20.3°F
0 in
6%
6 mi
1014 mbar
0

Five Day Weather Forecast

Sunny
Tue
H: 73°F
L: 39°F
Sunny
Wed
H: 80°F
L: 45°F
Patchy rain nearby
Thu
H: 78°F
L: 48°F
Patchy rain nearby
Fri
H: 79°F
L: 50°F
Sunny
Sat
H: 79°F
L: 51°F

Air Quality

AQI: 1 - Good
PM2.5: 3.1 μg/m3
PM10: 5.2 μg/m3
Carbon Monoxide: 110 μg/m3
Nitrogen Dioxide: 3 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 63 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 12:55 AM
Sunset: 8:17 PM
Daylight: 14 hrs 43 mins
Moonrise: 1:36 AM
Moon Transit: 3:27 AM
Moonset: 2:22 PM
Moon Phase: Last Quarter
Moon Illumination: 21.6%

Best Times for Fishing or Hunting

Major Periods

2:57 AM - 5:27 AM
2:57 AM - 5:27 AM

Minor Periods

1:52 PM - 3:22 PM
1:06 AM - 2:36 AM

Action Rating: 4 out of 5

Tuesday, June 9, 2026

Weather Forecast

Sunny
73.2°F
39.4°F
56.1°F
35%
0 in
0%
0%
7.8 mph
11.5


Air Quality

AQI: 1 - Good
PM2.5: 2.41 μg/m3
PM10: 4.88 μg/m3
Carbon Monoxide: 108.25 μg/m3
Nitrogen Dioxide: 1.35 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 82.33 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 12:55 AM
Sunset: 8:17 PM
Daylight: 14 hrs 43 mins
Moonrise: 1:36 AM
Moon Transit: 3:27 AM
Moonset: 2:22 PM
Moon Phase: Last Quarter
Moon Illumination: 21.6%

Best Times for Fishing or Hunting

Major Periods

2:57 AM - 5:27 AM
2:57 AM - 5:27 AM

Minor Periods

1:52 PM - 3:22 PM
1:06 AM - 2:36 AM

Action Rating: 4 out of 5

Wednesday, June 10, 2026

Weather Forecast

Sunny
79.7°F
45.2°F
62.2°F
33%
0 in
0%
0%
7.2 mph
12


Air Quality

AQI: 1 - Good
PM2.5: 3.52 μg/m3
PM10: 6.98 μg/m3
Carbon Monoxide: 107.83 μg/m3
Nitrogen Dioxide: 2.06 μg/m3
Sulphur Dioxide: 0.24 μg/m3
Ozone: 84.25 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 12:55 AM
Sunset: 8:18 PM
Daylight: 14 hrs 44 mins
Moonrise: 2:01 AM
Moon Transit: 8:40 AM
Moonset: 3:30 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

8:10 AM - 10:40 AM
4:34 PM - 7:04 PM

Minor Periods

3:00 PM - 4:30 PM
1:31 AM - 3:01 AM

Action Rating: 2 out of 5

Thursday, June 11, 2026

Weather Forecast

Patchy rain nearby
77.9°F
47.5°F
62.5°F
31%
0.01 in
73%
0%
10.3 mph
12.2


Air Quality

AQI: 1 - Good
PM2.5: 2.78 μg/m3
PM10: 5.8 μg/m3
Carbon Monoxide: 109.21 μg/m3
Nitrogen Dioxide: 1.48 μg/m3
Sulphur Dioxide: 0.32 μg/m3
Ozone: 99.25 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 12:56 AM
Sunset: 8:18 PM
Daylight: 14 hrs 44 mins
Moonrise: 2:30 AM
Moon Transit: 9:31 AM
Moonset: 4:45 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.5%

Best Times for Fishing or Hunting

Major Periods

5:26 PM - 7:56 PM
9:01 AM - 11:31 AM

Minor Periods

4:15 PM - 5:45 PM
2:00 AM - 3:30 AM

Action Rating: 3 out of 5

Friday, June 12, 2026

Weather Forecast

Patchy rain nearby
79°F
50°F
63°F
34%
0.03 in
73%
0%
6 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 4.04 μg/m3
PM10: 7.03 μg/m3
Carbon Monoxide: 118.5 μg/m3
Nitrogen Dioxide: 1.79 μg/m3
Sulphur Dioxide: 0.42 μg/m3
Ozone: 99.83 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 12:56 AM
Sunset: 8:19 PM
Daylight: 14 hrs 45 mins
Moonrise: 3:04 AM
Moon Transit: 10:27 AM
Moonset: 6:02 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

6:25 PM - 8:55 PM
9:57 AM - 12:27 AM

Minor Periods

5:32 PM - 7:02 PM
2:34 AM - 4:04 AM

Action Rating: 2 out of 5

Saturday, June 13, 2026

Weather Forecast

Sunny
79.4°F
51.4°F
62.1°F
34%
0 in
0%
0%
14.5 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 4.58 μg/m3
PM10: 6.85 μg/m3
Carbon Monoxide: 138 μg/m3
Nitrogen Dioxide: 3.77 μg/m3
Sulphur Dioxide: 0.53 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 12:56 AM
Sunset: 8:19 PM
Daylight: 14 hrs 45 mins
Moonrise: 3:47 AM
Moon Transit: 11:29 AM
Moonset: 7:20 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

7:28 PM - 9:58 PM
10:59 AM - 1:29 PM

Minor Periods

6:50 PM - 8:20 PM
3:17 AM - 4:47 AM

Action Rating: 3 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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