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

Current Water Temperature

51.6°F

Measurement Time: Friday, June 5, 2026, 6:00 AM 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

74°F
Sunny
Sunny
57.6°F
72.9°F
17%
SW 16.3 mph
18.8 mph
74°F
26.7°F
0 in
0%
6 mi
1009 mbar
11.3

Five Day Weather Forecast

Sunny
Fri
H: 75°F
L: 47°F
Sunny
Sat
H: 67°F
L: 41°F
Sunny
Sun
H: 67°F
L: 39°F
Sunny
Mon
H: 63°F
L: 39°F
Sunny
Tue
H: 66°F
L: 42°F

Air Quality

AQI: 1 - Good
PM2.5: 3.8 μg/m3
PM10: 8.8 μg/m3
Carbon Monoxide: 110 μg/m3
Nitrogen Dioxide: 0.1 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 121 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 12:54 AM
Sunset: 8:15 PM
Daylight: 14 hrs 40 mins
Moonrise: 12:54 AM
Moon Transit: 4:57 AM
Moonset: 10:07 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.0%

Best Times for Fishing or Hunting

Major Periods

4:27 AM - 6:57 AM
12:49 AM - 3:19 PM

Minor Periods

9:37 AM - 11:07 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Lake Wind Advisory issued June 5 at 1:18AM PDT until June 6 at 11:00PM PDT by NWS Reno NV

Effective: Fri June 5, 2026, 1:18 AM
Expires: Sat June 6, 2026, 3:00 AM

* WHAT...Southwest winds 15 to 25 mph with gusts up to 40 mph for Topaz Lake, Bridgeport Reservoir, Mono Lake, and Crowley Lake. * WHERE...Mono County. * WHEN...From 11 AM to 11 PM PDT Saturday. * IMPACTS...Small boats, kayaks and paddle boards will be prone to capsizing and should remain off lake waters until conditions improve.

Check lake conditions before heading out and be prepared for a sudden increase in winds and wave heights. Consider postponing boating activities on the lake until a day with less wind.
Friday, June 5, 2026

Weather Forecast

Sunny
74.6°F
47.2°F
60.9°F
29%
0 in
0%
0%
17 mph
11.4


Air Quality

AQI: 1 - Good
PM2.5: 4.25 μg/m3
PM10: 9.17 μg/m3
Carbon Monoxide: 109.46 μg/m3
Nitrogen Dioxide: 1.96 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 94.13 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 12:54 AM
Sunset: 8:15 PM
Daylight: 14 hrs 40 mins
Moonrise: 12:54 AM
Moon Transit: 4:57 AM
Moonset: 10:07 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.0%

Best Times for Fishing or Hunting

Major Periods

4:27 AM - 6:57 AM
12:49 AM - 3:19 PM

Minor Periods

9:37 AM - 11:07 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, June 6, 2026

Weather Forecast

Sunny
67.3°F
41.4°F
54.3°F
35%
0 in
0%
0%
18.6 mph
11.7


Air Quality

AQI: 1 - Good
PM2.5: 4.39 μg/m3
PM10: 9.05 μg/m3
Carbon Monoxide: 108 μg/m3
Nitrogen Dioxide: 1.37 μg/m3
Sulphur Dioxide: 0.38 μg/m3
Ozone: 96.63 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 12:55 AM
Sunset: 8:16 PM
Daylight: 14 hrs 41 mins
Moonrise: 12:23 AM
Moon Transit: 5:41 AM
Moonset: 11:09 AM
Moon Phase: Last Quarter
Moon Illumination: 53.9%

Best Times for Fishing or Hunting

Major Periods

5:11 AM - 7:41 AM
1:34 PM - 4:04 PM

Minor Periods

10:39 AM - 12:09 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Sunday, June 7, 2026

Weather Forecast

Sunny
66.6°F
38.7°F
51.8°F
30%
0 in
0%
0%
15.9 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.39 μg/m3
PM10: 6.49 μg/m3
Carbon Monoxide: 104.29 μg/m3
Nitrogen Dioxide: 1.31 μg/m3
Sulphur Dioxide: 0.25 μg/m3
Ozone: 86.38 μg/m3

Astronomical

Sunrise: 5:35 AM
Sun Transit: 12:55 AM
Sunset: 8:16 PM
Daylight: 14 hrs 42 mins
Moonrise: 12:48 AM
Moon Transit: 6:25 AM
Moonset: 12:12 AM
Moon Phase: Last Quarter
Moon Illumination: 42.6%

Best Times for Fishing or Hunting

Major Periods

5:55 AM - 8:25 AM
2:17 PM - 4:47 PM

Minor Periods

11:42 AM - 1:12 PM
12:18 AM - 1:48 AM

Action Rating: 3 out of 5

Monday, June 8, 2026

Weather Forecast

Sunny
63.4°F
38.5°F
50.6°F
34%
0 in
1%
0%
13.9 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 3.5 μg/m3
PM10: 6.27 μg/m3
Carbon Monoxide: 106.39 μg/m3
Nitrogen Dioxide: 1.34 μg/m3
Sulphur Dioxide: 0.35 μg/m3
Ozone: 82 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 12:55 AM
Sunset: 8:17 PM
Daylight: 14 hrs 42 mins
Moonrise: 1:12 AM
Moon Transit: 12:00 AM
Moonset: 1:15 PM
Moon Phase: Last Quarter
Moon Illumination: 31.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

12:45 AM - 2:15 PM
12:42 AM - 2:12 AM

Action Rating: 2 out of 5

Tuesday, June 9, 2026

Weather Forecast

Sunny
65.8°F
41.7°F
52.7°F
57%
0 in
1%
0%
13.6 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 3.48 μg/m3
PM10: 6.23 μg/m3
Carbon Monoxide: 115 μg/m3
Nitrogen Dioxide: 2.28 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 62.83 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

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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