Water Temperature of the Merced River in Yosemite Valley, CA

Current Water Temperature

63.7°F

Measurement Time: Monday, June 22, 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

59.5°F
Clear
Clear
50.2°F
59.6°F
59%
E 3.8 mph
8 mph
59.1°F
43.5°F
0 in
3%
6 mi
1017 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 75°F
L: 54°F
Sunny
Tue
H: 78°F
L: 55°F
Sunny
Wed
H: 76°F
L: 56°F
Sunny
Thu
H: 75°F
L: 54°F
Sunny
Fri
H: 69°F
L: 51°F

Air Quality

AQI: 1 - Good
PM2.5: 5 μg/m3
PM10: 6.7 μg/m3
Carbon Monoxide: 105 μg/m3
Nitrogen Dioxide: 3 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 86 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

Lake Wind Advisory issued June 22 at 11:15AM PDT until June 22 at 11:00PM PDT by NWS Hanford CA

Effective: Mon June 22, 2026, 11:15 AM
Expires: Mon June 22, 2026, 7:15 PM

* WHAT...West winds 20 to 25 mph with gusts up to 35 mph expected. * WHERE...West Side Mountains north of 198 and San Luis Reservoir. * WHEN...From 5 PM this afternoon to 11 PM PDT this evening. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.


Lake Wind Advisory issued June 22 at 6:48PM PDT until June 22 at 11:00PM PDT by NWS Hanford CA

Effective: Mon June 22, 2026, 6:48 PM
Expires: Mon June 22, 2026, 11:00 PM

* WHAT...West winds 20 to 25 mph with gusts up to 35 mph expected. * WHERE...West Side Mountains north of 198 and San Luis Reservoir. * WHEN...Until 11 PM PDT this evening. * IMPACTS...Strong winds and rough waves on area lakes will create hazardous conditions for small craft.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.
Monday, June 22, 2026

Weather Forecast

Sunny
74.9°F
53.6°F
63.6°F
43%
0 in
1%
0%
10.3 mph
11.7


Air Quality

AQI: 1 - Good
PM2.5: 3.91 μg/m3
PM10: 4.86 μg/m3
Carbon Monoxide: 100.75 μg/m3
Nitrogen Dioxide: 3.3 μg/m3
Sulphur Dioxide: 0.72 μg/m3
Ozone: 78.29 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°F
55.3°F
65.6°F
34%
0 in
1%
0%
11.6 mph
11.9


Air Quality

AQI: 1 - Good
PM2.5: 4.87 μg/m3
PM10: 6.46 μg/m3
Carbon Monoxide: 107.83 μg/m3
Nitrogen Dioxide: 2.84 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 91.79 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

Wednesday, June 24, 2026

Weather Forecast

Sunny
75.6°F
55.7°F
64.8°F
31%
0 in
1%
0%
11.6 mph
12


Air Quality

AQI: 1 - Good
PM2.5: 5.69 μg/m3
PM10: 8.36 μg/m3
Carbon Monoxide: 126.71 μg/m3
Nitrogen Dioxide: 2.41 μg/m3
Sulphur Dioxide: 0.75 μg/m3
Ozone: 105.42 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 1:00 PM
Sunset: 8:24 PM
Daylight: 14 hrs 47 mins
Moonrise: 4:04 PM
Moon Transit: 9:12 PM
Moonset: 1:45 AM
Moon Phase: First Quarter
Moon Illumination: 71.7%

Best Times for Fishing or Hunting

Major Periods

4:16 AM - 6:46 AM
8:42 PM - 11:12 PM

Minor Periods

3:34 PM - 5:04 PM
1:15 AM - 2:45 AM

Action Rating: 3 out of 5

Thursday, June 25, 2026

Weather Forecast

Sunny
74.6°F
53.5°F
63.3°F
27%
0 in
0%
0%
11.6 mph
11.9


Air Quality

AQI: 1 - Good
PM2.5: 6.32 μg/m3
PM10: 8.91 μg/m3
Carbon Monoxide: 128.17 μg/m3
Nitrogen Dioxide: 2.41 μg/m3
Sulphur Dioxide: 0.92 μg/m3
Ozone: 107.21 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:01 PM
Sunset: 8:24 PM
Daylight: 14 hrs 47 mins
Moonrise: 5:06 PM
Moon Transit: 9:58 PM
Moonset: 2:14 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.2%

Best Times for Fishing or Hunting

Major Periods

5:00 AM - 7:30 AM
9:28 PM - 11:58 PM

Minor Periods

4:36 PM - 6:06 PM
1:44 AM - 3:14 AM

Action Rating: 2 out of 5

Friday, June 26, 2026

Weather Forecast

Sunny
69.1°F
51.1°F
59.6°F
36%
0 in
3%
0%
12.5 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 6.62 μg/m3
PM10: 9 μg/m3
Carbon Monoxide: 132.67 μg/m3
Nitrogen Dioxide: 4.42 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 90.17 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:01 PM
Sunset: 8:24 PM
Daylight: 14 hrs 46 mins
Moonrise: 6:06 PM
Moon Transit: 10:47 PM
Moonset: 2:46 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 89.2%

Best Times for Fishing or Hunting

Major Periods

5:48 AM - 8:18 AM
12:00 AM - 12:00 AM

Minor Periods

5:36 PM - 7:06 PM
2:16 AM - 3:46 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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