Water Temperature of the Merced River in Yosemite Valley, CA

Current Water Temperature

61.3°F

Measurement Time: Wednesday, June 10, 2026, 11:30 AM 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

66.3°F
Sunny
Sunny
56.5°F
66.5°F
31%
W 4.5 mph
7 mph
66.3°F
36.7°F
0 in
0%
6 mi
1011 mbar
0.5

Five Day Weather Forecast

Sunny
Wed
H: 76°F
L: 54°F
Sunny
Thu
H: 78°F
L: 57°F
Sunny
Fri
H: 79°F
L: 58°F
Sunny
Sat
H: 78°F
L: 58°F
Sunny
Sun
H: 78°F
L: 57°F

Air Quality

AQI: 1 - Good
PM2.5: 3.4 μg/m3
PM10: 5.6 μg/m3
Carbon Monoxide: 112 μg/m3
Nitrogen Dioxide: 1.4 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 115 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 12:57 AM
Sunset: 8:20 PM
Daylight: 14 hrs 44 mins
Moonrise: 2:03 AM
Moon Transit: 8:42 AM
Moonset: 3:33 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

8:12 AM - 10:42 AM
4:32 PM - 7:02 PM

Minor Periods

3:03 PM - 4:33 PM
1:33 AM - 3:03 AM

Action Rating: 2 out of 5

Heat Advisory issued June 10 at 10:56AM PDT until June 13 at 11:00PM PDT by NWS Hanford CA

Effective: Wed June 10, 2026, 10:56 AM
Expires: Wed June 10, 2026, 7:00 PM

* WHAT...High temperatures up to 105 expected. * WHERE...A portion of central California. * WHEN...From 11 AM Thursday to 11 PM PDT Saturday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...-Moderate Heat Risk

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Wednesday, June 10, 2026

Weather Forecast

Sunny
75.6°F
53.5°F
64.1°F
30%
0 in
1%
0%
10.1 mph
11.1


Air Quality

AQI: 1 - Good
PM2.5: 3.26 μg/m3
PM10: 5.26 μg/m3
Carbon Monoxide: 107.46 μg/m3
Nitrogen Dioxide: 3.48 μg/m3
Sulphur Dioxide: 0.36 μg/m3
Ozone: 75.79 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 12:57 AM
Sunset: 8:20 PM
Daylight: 14 hrs 44 mins
Moonrise: 2:03 AM
Moon Transit: 8:42 AM
Moonset: 3:33 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

8:12 AM - 10:42 AM
4:32 PM - 7:02 PM

Minor Periods

3:03 PM - 4:33 PM
1:33 AM - 3:03 AM

Action Rating: 2 out of 5

Thursday, June 11, 2026

Weather Forecast

Sunny
78.2°F
56.9°F
67°F
32%
0 in
1%
0%
10.7 mph
11.8


Air Quality

AQI: 1 - Good
PM2.5: 2.97 μg/m3
PM10: 4.74 μg/m3
Carbon Monoxide: 109.29 μg/m3
Nitrogen Dioxide: 3.06 μg/m3
Sulphur Dioxide: 0.35 μg/m3
Ozone: 83.21 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 12:58 AM
Sunset: 8:20 PM
Daylight: 14 hrs 45 mins
Moonrise: 2:32 AM
Moon Transit: 9:33 AM
Moonset: 4:47 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.5%

Best Times for Fishing or Hunting

Major Periods

5:24 PM - 7:54 PM
9:03 AM - 11:33 AM

Minor Periods

4:17 PM - 5:47 PM
2:02 AM - 3:32 AM

Action Rating: 3 out of 5

Friday, June 12, 2026

Weather Forecast

Sunny
78.7°F
57.9°F
67.7°F
33%
0 in
1%
0%
11.6 mph
11.7


Air Quality

AQI: 1 - Good
PM2.5: 4.15 μg/m3
PM10: 6.26 μg/m3
Carbon Monoxide: 108.38 μg/m3
Nitrogen Dioxide: 2.47 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 93.92 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 12:58 AM
Sunset: 8:21 PM
Daylight: 14 hrs 45 mins
Moonrise: 3:06 AM
Moon Transit: 10:29 AM
Moonset: 6:04 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

6:23 PM - 8:53 PM
9:59 AM - 12:29 AM

Minor Periods

5:34 PM - 7:04 PM
2:36 AM - 4:06 AM

Action Rating: 2 out of 5

Saturday, June 13, 2026

Weather Forecast

Sunny
78.3°F
58.1°F
67.4°F
28%
0 in
0%
0%
11.2 mph
12.1


Air Quality

AQI: 1 - Good
PM2.5: 4.79 μg/m3
PM10: 7.02 μg/m3
Carbon Monoxide: 107.29 μg/m3
Nitrogen Dioxide: 2.29 μg/m3
Sulphur Dioxide: 0.59 μg/m3
Ozone: 91.71 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 12:58 AM
Sunset: 8:21 PM
Daylight: 14 hrs 46 mins
Moonrise: 3:49 AM
Moon Transit: 11:31 AM
Moonset: 7:22 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

7:26 PM - 9:56 PM
11:01 AM - 1:31 PM

Minor Periods

6:52 PM - 8:22 PM
3:19 AM - 4:49 AM

Action Rating: 3 out of 5

Sunday, June 14, 2026

Weather Forecast

Sunny
77.7°F
57.2°F
67°F
25%
0 in
0%
0%
11.2 mph
11.7


Air Quality

AQI: 1 - Good
PM2.5: 4.92 μg/m3
PM10: 7.25 μg/m3
Carbon Monoxide: 111.87 μg/m3
Nitrogen Dioxide: 2.46 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 89.21 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 12:58 AM
Sunset: 8:22 PM
Daylight: 14 hrs 46 mins
Moonrise: 4:43 AM
Moon Transit: 12:37 AM
Moonset: 8:36 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

8:34 PM - 11:04 PM
12:07 AM - 2:37 PM

Minor Periods

8:06 PM - 9:36 PM
4:13 AM - 5:43 AM

Action Rating: 6 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