Water Temperature of the Merced River in Yosemite Valley, CA

Current Water Temperature

62.2°F

Measurement Time: Friday, June 19, 2026, 1:30 PM PDT

Temperature Locations

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Local Points of Interest

Happy Isles Bridge; Yosemite National Park

Merced River

Station Name: MERCED R A HAPPY ISLES BRIDGE NR YOSEMITE CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 4,095 feet

Nearest Address:
Happy Isle Loop Rd
Yosemite Valley, CA 95389
Mariposa County

GPS Coordinates: 37.73131496, -119.5590514

Nearby Water Temperatures

Tuolumne River, Groveland, CA (13.9 mi)
Tuolumne River, Groveland, CA (19.3 mi)
Tuolumne River, Groveland, CA (23.5 mi)
Tuolumne River, Groveland, CA (24.7 mi)
Cherry Creek, Groveland, CA (25.5 mi)
Middle Fork San Joaquin River, Mammoth Lakes, CA (26.7 mi)
Deadman Creek, Mammoth Lakes, CA (33.9 mi)
Hot Creek, Mammoth Lakes, CA (38.6 mi)
Hot Creek, Mammoth Lakes, CA (39.2 mi)
Hot Creek, Mammoth Lakes, CA (40.8 mi)
San Joaquin River, Friant, CA (52.4 mi)
Walker Lake, Walker Lake, NV (80.9 mi)
Walker Lake, Walker Lake, NV (83.8 mi)
Trout Creek, South Lake Tahoe, CA (85.1 mi)
Upper Truckee River, South Lake Tahoe, CA (85.6 mi)

Weather for Yosemite Valley, California

Current Weather

53.4°F
Clear
Clear
45°F
53.4°F
83%
ESE 2.2 mph
4 mph
52.9°F
47.2°F
0 in
14%
6 mi
1016 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Fri
H: 69°F
L: 51°F
Sunny
Sat
H: 70°F
L: 48°F
Sunny
Sun
H: 72°F
L: 52°F
Sunny
Mon
H: 76°F
L: 55°F
Sunny
Tue
H: 79°F
L: 57°F

Air Quality

AQI: 1 - Good
PM2.5: 6.6 μg/m3
PM10: 8.8 μg/m3
Carbon Monoxide: 103 μg/m3
Nitrogen Dioxide: 2.3 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 80 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 1:00 PM
Sunset: 8:23 PM
Daylight: 14 hrs 47 mins
Moonrise: 10:48 AM
Moon Transit: 5:34 PM
Moonset: 12:42 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%

Best Times for Fishing or Hunting

Major Periods

12:36 AM - 3:06 AM
5:04 PM - 7:34 PM

Minor Periods

10:18 AM - 11:48 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Special Weather Statement issued June 19 at 1:00PM PDT by NWS Reno NV

Effective: Fri June 19, 2026, 1:00 PM
Expires: Fri June 19, 2026, 3:00 PM

At 1253 PM PDT, showers and thunderstorms are developing along the eastern Sierra and Sierra Front south of Highway 50. Thunderstorm coverage will expand northward through the afternoon. HAZARD...Wind gusts up to 50 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Reno, Carson City, South Lake Tahoe, Fallon, Tahoe City, Graeagle, Kings Beach, Plumas Eureka State Park, Sonora Pass, Gardnerville, Virginia City, Boca Reservoir, Pyramid Lake, Lee Vining, Twin Lakes, Lahontan Reservoir, Incline Village, Blairsden, Doyle, and Alpine Meadows.

If outdoors, consider seeking shelter inside a building. If on or near a lake, be prepared to get out of the water and move indoors or inside a vehicle. Remember, lightning can strike out to 10 miles from the parent thunderstorm. If you can hear thunder, you are close enough to be struck by lightning. Move to safe shelter now! Do not be caught on the water in a thunderstorm.


Friday, June 19, 2026

Weather Forecast

Patchy rain nearby
68.7°F
51.4°F
60.2°F
61%
0.02 in
36%
0%
11.4 mph
11.9


Air Quality

AQI: 1 - Good
PM2.5: 9.64 μg/m3
PM10: 12.46 μg/m3
Carbon Monoxide: 103.79 μg/m3
Nitrogen Dioxide: 2.98 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 79.63 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 1:00 PM
Sunset: 8:23 PM
Daylight: 14 hrs 47 mins
Moonrise: 10:48 AM
Moon Transit: 5:34 PM
Moonset: 12:42 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%

Best Times for Fishing or Hunting

Major Periods

12:36 AM - 3:06 AM
5:04 PM - 7:34 PM

Minor Periods

10:18 AM - 11:48 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, June 20, 2026

Weather Forecast

Sunny
69.6°F
48.3°F
58.5°F
48%
0 in
2%
0%
11.2 mph
11.8


Air Quality

AQI: 1 - Good
PM2.5: 6.63 μg/m3
PM10: 8.68 μg/m3
Carbon Monoxide: 100.63 μg/m3
Nitrogen Dioxide: 2.92 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 75.83 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 1:00 PM
Sunset: 8:24 PM
Daylight: 14 hrs 47 mins
Moonrise: 11:55 AM
Moon Transit: 6:19 PM
Moonset: 12:10 AM
Moon Phase: Waxing Crescent
Moon Illumination: 27.8%

Best Times for Fishing or Hunting

Major Periods

1:23 AM - 3:53 AM
5:49 PM - 8:19 PM

Minor Periods

11:25 AM - 12:55 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Sunday, June 21, 2026

Weather Forecast

Sunny
72.4°F
51.6°F
61.3°F
39%
0 in
1%
0%
10.5 mph
12


Air Quality

AQI: 1 - Good
PM2.5: 4.85 μg/m3
PM10: 6.23 μg/m3
Carbon Monoxide: 98.08 μg/m3
Nitrogen Dioxide: 3.19 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 74.67 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 1:00 PM
Sunset: 8:24 PM
Daylight: 14 hrs 47 mins
Moonrise: 12:59 AM
Moon Transit: 7:02 PM
Moonset: 12:34 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

2:08 AM - 4:38 AM
6:32 PM - 9:02 PM

Minor Periods

12:29 AM - 1:59 PM
12:04 AM - 1:34 AM

Action Rating: 2 out of 5

Monday, June 22, 2026

Weather Forecast

Sunny
76.3°F
55.3°F
65°F
35%
0 in
1%
0%
10.7 mph
12


Air Quality

AQI: 1 - Good
PM2.5: 5.41 μg/m3
PM10: 6.98 μg/m3
Carbon Monoxide: 100.75 μg/m3
Nitrogen Dioxide: 3.26 μg/m3
Sulphur Dioxide: 0.67 μg/m3
Ozone: 77.5 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 1:00 PM
Sunset: 8:24 PM
Daylight: 14 hrs 47 mins
Moonrise: 2:01 PM
Moon Transit: 7:45 PM
Moonset: 12:57 AM
Moon Phase: First Quarter
Moon Illumination: 49.7%

Best Times for Fishing or Hunting

Major Periods

2:50 AM - 5:20 AM
7:15 PM - 9:45 PM

Minor Periods

1:31 PM - 3:01 PM
12:27 AM - 1:57 AM

Action Rating: 3 out of 5

Tuesday, June 23, 2026

Weather Forecast

Sunny
78.9°F
56.8°F
66.8°F
29%
0 in
0%
0%
10.7 mph
12.2


Air Quality

AQI: 1 - Good
PM2.5: 6.55 μg/m3
PM10: 8.97 μg/m3
Carbon Monoxide: 108.76 μg/m3
Nitrogen Dioxide: 2.73 μg/m3
Sulphur Dioxide: 0.76 μg/m3
Ozone: 91.83 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 1:00 PM
Sunset: 8:24 PM
Daylight: 14 hrs 47 mins
Moonrise: 3:03 PM
Moon Transit: 8:27 PM
Moonset: 1:20 AM
Moon Phase: First Quarter
Moon Illumination: 61.0%

Best Times for Fishing or Hunting

Major Periods

3:33 AM - 6:03 AM
7:57 PM - 10:27 PM

Minor Periods

2:33 PM - 4:03 PM
12:50 AM - 2:20 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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