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

Current Water Temperature

41.5°F

Measurement Time: Friday, April 10, 2026, 7:00 AM PDT

Temperature Locations

View Nearby Locations     View All California Locations     View Locations Near Me

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

44.5°F
Thundery outbreaks in nearby
Thundery outbreaks in nearby
37.9°F
44.5°F
63%
SW 18.3 mph
21.1 mph
37.9°F
33.3°F
0 in
41%
6 mi
1009 mbar
7.3

Five Day Weather Forecast

Thundery outbreaks in nearby
Fri
H: 45°F
L: 30°F
Patchy moderate snow
Sat
H: 44°F
L: 26°F
Moderate or heavy snow showers
Sun
H: 32°F
L: 23°F
Moderate or heavy snow showers
Mon
H: 36°F
L: 18°F
Sunny
Tue
H: 40°F
L: 15°F

Air Quality

AQI: 1 - Good
PM2.5: 3.88 μg/m3
PM10: 4.28 μg/m3
Carbon Monoxide: 118.68 μg/m3
Nitrogen Dioxide: 1.98 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 89 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 12:57 AM
Sunset: 7:27 PM
Daylight: 12 hrs 59 mins
Moonrise: 2:49 AM
Moon Transit: 7:32 AM
Moonset: 12:22 AM
Moon Phase: Last Quarter
Moon Illumination: 31.0%

Best Times for Fishing or Hunting

Major Periods

7:02 AM - 9:32 AM
3:26 PM - 5:56 PM

Minor Periods

11:52 AM - 1:22 PM
2:19 AM - 3:49 AM

Action Rating: 2 out of 5

Winter Storm Watch issued April 9 at 2:35PM PDT until April 12 at 11:00PM PDT by NWS Reno NV

Effective: Thu April 9, 2026, 2:35 PM
Expires: Fri April 10, 2026, 5:00 PM

* WHAT...Heavy snow. Snow accumulations between 2 to 8 inches west of Highway 395, 6 to 12 inches above 8000 feet, and locally up to 24 inches across higher terrain along the Sierra crest. Winds peak along the crest gusting as high as 70 to 80 mph and up to 40 mph along Highway 395 Saturday evening. * WHERE...Mono County. * WHEN...From Friday evening through Sunday evening. * IMPACTS...Travel could be very difficult to impossible. Strong winds could cause damage to trees and power lines.

Monitor the latest forecasts for updates on this situation.


Winter Storm Warning issued April 10 at 8:21AM PDT until April 12 at 11:00PM PDT by NWS Reno NV

Effective: Fri April 10, 2026, 8:21 AM
Expires: Sat April 11, 2026, 4:00 PM

* WHAT...Heavy snow. Snow accumulations between 2 to 8 inches below 8000 feet, 6 to 12 inches above 8000 feet, and locally up to 24 inches across higher terrain along the Sierra crest. Winds peak along the crest gusting as high as 80 mph and up to 45 mph along Highway 395. * WHERE...Mono County. * WHEN...From 2 PM Saturday to 11 PM PDT Sunday. * IMPACTS...Travel could be very difficult to impossible. Strong winds could cause damage to trees and power lines.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
Friday, April 10, 2026

Weather Forecast

Thundery outbreaks in nearby
45°F
29.7°F
36.6°F
84%
0 in
0%
0%
18.3 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 5.05 μg/m3
PM10: 6.5 μg/m3
Carbon Monoxide: 121.04 μg/m3
Nitrogen Dioxide: 1.6 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 90.24 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 12:57 AM
Sunset: 7:27 PM
Daylight: 12 hrs 59 mins
Moonrise: 2:49 AM
Moon Transit: 7:32 AM
Moonset: 12:22 AM
Moon Phase: Last Quarter
Moon Illumination: 31.0%

Best Times for Fishing or Hunting

Major Periods

7:02 AM - 9:32 AM
3:26 PM - 5:56 PM

Minor Periods

11:52 AM - 1:22 PM
2:19 AM - 3:49 AM

Action Rating: 2 out of 5

Saturday, April 11, 2026

Weather Forecast

Patchy moderate snow
44.1°F
26.4°F
33.2°F
74%
0.03 in
60%
4%
16.3 mph
2.1


Air Quality

AQI: 1 - Good
PM2.5: 2.4 μg/m3
PM10: 2.9 μg/m3
Carbon Monoxide: 121.96 μg/m3
Nitrogen Dioxide: 1.27 μg/m3
Sulphur Dioxide: 0.77 μg/m3
Ozone: 92.96 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 12:57 AM
Sunset: 7:28 PM
Daylight: 13 hrs 1 mins
Moonrise: 3:23 AM
Moon Transit: 8:21 AM
Moonset: 1:25 PM
Moon Phase: Last Quarter
Moon Illumination: 21.1%

Best Times for Fishing or Hunting

Major Periods

7:51 AM - 10:21 AM
4:14 PM - 6:44 PM

Minor Periods

12:55 AM - 2:25 PM
2:53 AM - 4:23 AM

Action Rating: 2 out of 5

Sunday, April 12, 2026

Weather Forecast

Moderate or heavy snow showers
32.4°F
23°F
27.5°F
74%
1.58 in
62%
36%
17.4 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 2.88 μg/m3
PM10: 3.68 μg/m3
Carbon Monoxide: 136.68 μg/m3
Nitrogen Dioxide: 1.22 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 100.76 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 12:57 AM
Sunset: 7:29 PM
Daylight: 13 hrs 4 mins
Moonrise: 3:54 AM
Moon Transit: 9:08 AM
Moonset: 2:31 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:38 AM - 11:08 AM
5:01 PM - 7:31 PM

Minor Periods

2:01 PM - 3:31 PM
3:24 AM - 4:54 AM

Action Rating: 3 out of 5

Monday, April 13, 2026

Weather Forecast

Moderate or heavy snow showers
36.1°F
18.4°F
27.6°F
77%
0.13 in
65%
7%
7.8 mph
2.1


Air Quality

AQI: 1 - Good
PM2.5: 1.94 μg/m3
PM10: 2.15 μg/m3
Carbon Monoxide: 141.18 μg/m3
Nitrogen Dioxide: 1.32 μg/m3
Sulphur Dioxide: 0.83 μg/m3
Ozone: 110.4 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 12:56 AM
Sunset: 7:30 PM
Daylight: 13 hrs 6 mins
Moonrise: 4:21 AM
Moon Transit: 9:54 AM
Moonset: 3:36 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

5:46 PM - 8:16 PM
9:24 AM - 11:54 AM

Minor Periods

3:06 PM - 4:36 PM
3:51 AM - 5:21 AM

Action Rating: 2 out of 5

Tuesday, April 14, 2026

Weather Forecast

Sunny
39.9°F
15.4°F
27.2°F
72%
0 in
0%
0%
8.1 mph
2.2


Air Quality

AQI: 1 - Good
PM2.5: 2 μg/m3
PM10: 2.31 μg/m3
Carbon Monoxide: 138.05 μg/m3
Nitrogen Dioxide: 1.8 μg/m3
Sulphur Dioxide: 0.79 μg/m3
Ozone: 107.08 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 12:56 AM
Sunset: 7:31 PM
Daylight: 13 hrs 8 mins
Moonrise: 4:47 AM
Moon Transit: 10:39 AM
Moonset: 4:44 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

4:14 PM - 5:44 PM
4:17 AM - 5:47 AM

Action Rating: 2 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.

Webcams Near Mammoth Lakes, CA

Sponsored Content