Water Temperature of the Merced River in Yosemite Valley, CA

Current Water Temperature

59.4°F

Measurement Time: Thursday, July 16, 2026, 9:30 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

58.2°F
Clear
Clear
47.3°F
58.2°F
29%
E 6.5 mph
13.6 mph
57.3°F
26.1°F
0 in
0%
6 mi
1015 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 78°F
L: 58°F
Sunny
Sat
H: 78°F
L: 60°F
Sunny
Sun
H: 79°F
L: 59°F
Sunny
Mon
H: 80°F
L: 60°F
Partly Cloudy
Tue
H: 79°F
L: 61°F

Air Quality

AQI: 1 - Good
PM2.5: 3.1 μg/m3
PM10: 3.8 μg/m3
Carbon Monoxide: 87 μg/m3
Nitrogen Dioxide: 5.1 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 65 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:04 PM
Sunset: 8:19 PM
Daylight: 14 hrs 29 mins
Moonrise: 9:38 AM
Moon Transit: 4:11 PM
Moonset: 10:35 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:41 PM - 6:11 PM

Minor Periods

10:05 PM - 11:35 PM
9:08 AM - 10:38 AM

Action Rating: 2 out of 5

Friday, July 17, 2026

Weather Forecast

Sunny
78°F
57.7°F
67°F
24%
0 in
1%
0%
11.2 mph
11.9


Air Quality

AQI: 1 - Good
PM2.5: 3.78 μg/m3
PM10: 5.37 μg/m3
Carbon Monoxide: 91.83 μg/m3
Nitrogen Dioxide: 2.42 μg/m3
Sulphur Dioxide: 0.52 μg/m3
Ozone: 92.58 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:04 PM
Sunset: 8:19 PM
Daylight: 14 hrs 29 mins
Moonrise: 9:38 AM
Moon Transit: 4:11 PM
Moonset: 10:35 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:41 PM - 6:11 PM

Minor Periods

10:05 PM - 11:35 PM
9:08 AM - 10:38 AM

Action Rating: 2 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
77.9°F
59.6°F
67.5°F
28%
0 in
1%
0%
11.2 mph
12.2


Air Quality

AQI: 1 - Good
PM2.5: 5.24 μg/m3
PM10: 7.73 μg/m3
Carbon Monoxide: 95.67 μg/m3
Nitrogen Dioxide: 2.49 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 95.58 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:04 PM
Sunset: 8:18 PM
Daylight: 14 hrs 27 mins
Moonrise: 10:45 AM
Moon Transit: 4:57 PM
Moonset: 10:59 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 2:30 AM
4:27 PM - 6:57 PM

Minor Periods

10:29 PM - 11:59 PM
10:15 AM - 11:45 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
79°F
59.1°F
68.3°F
31%
0 in
1%
0%
11.2 mph
11.8


Air Quality

AQI: 1 - Good
PM2.5: 4.71 μg/m3
PM10: 6.78 μg/m3
Carbon Monoxide: 100.76 μg/m3
Nitrogen Dioxide: 2.68 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 89.25 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:04 PM
Sunset: 8:17 PM
Daylight: 14 hrs 26 mins
Moonrise: 11:49 AM
Moon Transit: 5:40 PM
Moonset: 11:23 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

12:45 AM - 3:15 AM
5:10 PM - 7:40 PM

Minor Periods

12:00 AM - 12:00 AM
11:19 AM - 12:49 AM

Action Rating: 2 out of 5

Monday, July 20, 2026

Weather Forecast

Sunny
79.6°F
59.8°F
68.4°F
30%
0 in
1%
0%
10.7 mph
11.2


Air Quality

AQI: 1 - Good
PM2.5: 4 μg/m3
PM10: 5.47 μg/m3
Carbon Monoxide: 119 μg/m3
Nitrogen Dioxide: 2.75 μg/m3
Sulphur Dioxide: 0.57 μg/m3
Ozone: 90.04 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:04 PM
Sunset: 8:17 PM
Daylight: 14 hrs 25 mins
Moonrise: 12:53 AM
Moon Transit: 6:24 PM
Moonset: 12:23 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

1:28 AM - 3:58 AM
5:54 PM - 8:24 PM

Minor Periods

12:23 AM - 1:53 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, July 21, 2026

Weather Forecast

Partly Cloudy
78.7°F
61.2°F
69.5°F
34%
0.03 in
36%
0%
7.8 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 4.65 μg/m3
PM10: 6.1 μg/m3
Carbon Monoxide: 128.5 μg/m3
Nitrogen Dioxide: 6.33 μg/m3
Sulphur Dioxide: 0.62 μg/m3
Ozone: 58.5 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:04 PM
Sunset: 8:16 PM
Daylight: 14 hrs 23 mins
Moonrise: 1:55 PM
Moon Transit: 7:08 PM
Moonset: 12:48 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

2:12 AM - 4:42 AM
6:38 PM - 9:08 PM

Minor Periods

1:25 PM - 2:55 PM
12:00 AM - 12:00 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 Yosemite Valley, CA

Sponsored Content