Water Temperature of the Merced River in Yosemite Valley, CA

Current Water Temperature

58.5°F

Measurement Time: Thursday, July 2, 2026, 7:30 PM PDT

Temperature Locations

View Nearby Locations     View All California Locations     View Locations Near Me

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

51.1°F
Clear
Clear
48.6°F
51°F
50%
ENE 4.5 mph
9.4 mph
49.7°F
33.4°F
0 in
1%
6 mi
1016 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 72°F
L: 50°F
Sunny
Sat
H: 75°F
L: 53°F
Sunny
Sun
H: 78°F
L: 55°F
Sunny
Mon
H: 77°F
L: 56°F
Sunny
Tue
H: 80°F
L: 57°F

Air Quality

AQI: 1 - Good
PM2.5: 7.6 μg/m3
PM10: 10.1 μg/m3
Carbon Monoxide: 92 μg/m3
Nitrogen Dioxide: 7.5 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 43 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:02 PM
Sunset: 8:24 PM
Daylight: 14 hrs 43 mins
Moonrise: 10:54 PM
Moon Transit: 3:42 AM
Moonset: 9:04 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.3%

Best Times for Fishing or Hunting

Major Periods

3:12 AM - 5:42 AM
11:30 AM - 2:00 PM

Minor Periods

10:24 PM - 11:54 PM
8:34 AM - 10:04 AM

Action Rating: 3 out of 5

Lake Wind Advisory issued July 2 at 1:05PM PDT until July 4 at 11:00PM PDT by NWS Hanford CA

Effective: Thu July 2, 2026, 1:05 PM
Expires: Thu July 2, 2026, 9:00 PM

* WHAT...West winds 10 to 15 mph with gusts up to 30 mph. * WHERE...West Side Coastal Mountains north of 198 and San Luis Reservoir. * WHEN...Until 11 PM PDT Saturday. * 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 July 2 at 10:31AM PDT until July 2 at 11:00PM PDT by NWS Hanford CA

Effective: Thu July 2, 2026, 10:31 AM
Expires: Thu July 2, 2026, 11:00 PM

* WHAT...West winds 15 to 30 mph with gusts up to 45 mph expected. * WHERE...West Side Coastal 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.
Friday, July 3, 2026

Weather Forecast

Sunny
71.9°F
50.1°F
60.8°F
37%
0 in
1%
0%
11.2 mph
10.7


Air Quality

AQI: 1 - Good
PM2.5: 8.28 μg/m3
PM10: 11.22 μg/m3
Carbon Monoxide: 97.79 μg/m3
Nitrogen Dioxide: 3.2 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 89.42 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:02 PM
Sunset: 8:24 PM
Daylight: 14 hrs 43 mins
Moonrise: 10:54 PM
Moon Transit: 3:42 AM
Moonset: 9:04 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.3%

Best Times for Fishing or Hunting

Major Periods

3:12 AM - 5:42 AM
11:30 AM - 2:00 PM

Minor Periods

10:24 PM - 11:54 PM
8:34 AM - 10:04 AM

Action Rating: 3 out of 5

Saturday, July 4, 2026

Weather Forecast

Sunny
75°F
53.2°F
63.6°F
32%
0 in
1%
0%
11.4 mph
11.8


Air Quality

AQI: 1 - Good
PM2.5: 6.66 μg/m3
PM10: 9.05 μg/m3
Carbon Monoxide: 98.88 μg/m3
Nitrogen Dioxide: 3.03 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 88.79 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 1:02 PM
Sunset: 8:24 PM
Daylight: 14 hrs 42 mins
Moonrise: 11:18 PM
Moon Transit: 4:26 AM
Moonset: 10:07 AM
Moon Phase: Waning Gibbous
Moon Illumination: 70.6%

Best Times for Fishing or Hunting

Major Periods

3:56 AM - 6:26 AM
12:13 AM - 2:43 PM

Minor Periods

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

Action Rating: 2 out of 5

Sunday, July 5, 2026

Weather Forecast

Sunny
77.5°F
55.2°F
65.2°F
27%
0 in
0%
0%
11.6 mph
12.5


Air Quality

AQI: 1 - Good
PM2.5: 6.83 μg/m3
PM10: 9.82 μg/m3
Carbon Monoxide: 96.42 μg/m3
Nitrogen Dioxide: 2.84 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 88.83 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 1:02 PM
Sunset: 8:24 PM
Daylight: 14 hrs 41 mins
Moonrise: 12:18 AM
Moon Transit: 5:08 AM
Moonset: 11:09 AM
Moon Phase: Waning Gibbous
Moon Illumination: 59.8%

Best Times for Fishing or Hunting

Major Periods

4:38 AM - 7:08 AM
12:56 AM - 3:26 PM

Minor Periods

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

Action Rating: 2 out of 5

Monday, July 6, 2026

Weather Forecast

Sunny
76.8°F
56.3°F
65.5°F
29%
0 in
0%
0%
11.2 mph
12.3


Air Quality

AQI: 1 - Good
PM2.5: 6.64 μg/m3
PM10: 9.52 μg/m3
Carbon Monoxide: 102.33 μg/m3
Nitrogen Dioxide: 2.85 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 89.46 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 1:03 PM
Sunset: 8:23 PM
Daylight: 14 hrs 41 mins
Moonrise: 12:41 AM
Moon Transit: 5:51 AM
Moonset: 12:13 AM
Moon Phase: Last Quarter
Moon Illumination: 48.6%

Best Times for Fishing or Hunting

Major Periods

5:21 AM - 7:51 AM
9:45 AM - 12:15 AM

Minor Periods

11:43 AM - 1:13 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, July 7, 2026

Weather Forecast

Sunny
79.7°F
56.5°F
67°F
32%
0 in
1%
0%
11.6 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 6.4 μg/m3
PM10: 8.63 μg/m3
Carbon Monoxide: 125.5 μg/m3
Nitrogen Dioxide: 5.57 μg/m3
Sulphur Dioxide: 0.72 μg/m3
Ozone: 64.83 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 1:03 PM
Sunset: 8:23 PM
Daylight: 14 hrs 40 mins
Moonrise: 12:05 AM
Moon Transit: 6:36 AM
Moonset: 1:18 PM
Moon Phase: Last Quarter
Moon Illumination: 37.3%

Best Times for Fishing or Hunting

Major Periods

6:06 AM - 8:36 AM
2:25 PM - 4:55 PM

Minor Periods

12:48 AM - 2:18 PM
12:00 AM - 12:00 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.

Webcams Near Yosemite Valley, CA

Sponsored Content