Water Temperature of the Merced River in Yosemite Valley, CA

Current Water Temperature

60.8°F

Measurement Time: Monday, June 30, 2025, 5:30 AM PDT

Temperature Locations

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Local Points of Interest

Happy Isles Bridge; Yosemite National Park

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Merced River

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

Elevation Above Sea Level: 4,094 feet / 1,248 meters

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

71.3°F
Sunny
Conditions: Sunny
Humidity: 42%
Feels Like: 71.3°F
Wind: WSW 10.7 mph
Wind Gusts: 12.3 mph
Pressure: 29.93 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 12.1

Five Day Weather Forecast

Sunny
Mon
H: 73°F
L: 60°F
Sunny
Tue
H: 73°F
L: 56°F
Sunny
Wed
H: 69°F
L: 59°F
Sunny
Thu
H: 73°F
L: 55°F
Sunny
Fri
H: 70°F
L: 50°F

Air Quality

AQI: 1 - Good
PM2.5: 11.84 μg/m3
PM10: 13.14 μg/m3
Carbon Monoxide: 247.9 μg/m3
Nitrogen Dioxide: 2.78 μg/m3
Sulphur Dioxide: 2.04 μg/m3
Ozone: 143 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 1:02 PM
Sunset: 8:24 PM
Daylight: 14 hrs 45 mins
Moonrise: 11:14 AM
Moon Transit: 5:42 PM
Moonset: 12:38 AM
Moon Phase: Waxing Crescent
Moon Illumination: 21.6%

Best Times for Fishing or Hunting

Major Periods

12:48 AM - 3:18 AM
5:12 PM - 7:42 PM

Minor Periods

10:44 AM - 12:14 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, June 30, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 65.8°F
Average Humidity: 47%
Chance of Rain: 0%
Wind: 11.4 mph
UV Index: 3.2

Air Quality

AQI: 1 - Good
PM2.5: 11.85 μg/m3
PM10: 12.74 μg/m3
Carbon Monoxide: 268.92 μg/m3
Nitrogen Dioxide: 4.14 μg/m3
Sulphur Dioxide: 2.23 μg/m3
Ozone: 125.12 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 1:02 PM
Sunset: 8:24 PM
Daylight: 14 hrs 45 mins
Moonrise: 11:14 AM
Moon Transit: 5:42 PM
Moonset: 12:38 AM
Moon Phase: Waxing Crescent
Moon Illumination: 21.6%

Best Times for Fishing or Hunting

Major Periods

12:48 AM - 3:18 AM
5:12 PM - 7:42 PM

Minor Periods

10:44 AM - 12:14 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, July 1, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 65.3°F
Average Humidity: 40%
Chance of Rain: 0%
Wind: 11.6 mph
UV Index: 2.9

Air Quality

AQI: 1 - Good
PM2.5: 12.3 μg/m3
PM10: 13.43 μg/m3
Carbon Monoxide: 255.15 μg/m3
Nitrogen Dioxide: 4.25 μg/m3
Sulphur Dioxide: 1.92 μg/m3
Ozone: 123.32 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 1:02 PM
Sunset: 8:24 PM
Daylight: 14 hrs 44 mins
Moonrise: 12:14 AM
Moon Transit: 6:22 PM
Moonset: 12:01 AM
Moon Phase: Waxing Crescent
Moon Illumination: 31.6%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
5:52 PM - 8:22 PM

Minor Periods

11:44 AM - 1:14 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, July 2, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 63.3°F
Average Humidity: 43%
Chance of Rain: 0%
Wind: 11.9 mph
UV Index: 2.6

Air Quality

AQI: 1 - Good
PM2.5: 10.41 μg/m3
PM10: 11.83 μg/m3
Carbon Monoxide: 249.6 μg/m3
Nitrogen Dioxide: 4.96 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 116.76 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:02 PM
Sunset: 8:24 PM
Daylight: 14 hrs 43 mins
Moonrise: 1:13 PM
Moon Transit: 7:02 PM
Moonset: 12:22 AM
Moon Phase: First Quarter
Moon Illumination: 42.6%

Best Times for Fishing or Hunting

Major Periods

2:09 AM - 4:39 AM
6:32 PM - 9:02 PM

Minor Periods

12:43 AM - 2:13 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 3, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 64.6°F
Average Humidity: 36%
Chance of Rain: 0%
Wind: 12.8 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 8.21 μg/m3
PM10: 9.23 μg/m3
Carbon Monoxide: 236.43 μg/m3
Nitrogen Dioxide: 4.34 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 114.12 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:02 PM
Sunset: 8:24 PM
Daylight: 14 hrs 43 mins
Moonrise: 2:12 PM
Moon Transit: 7:43 PM
Moonset: 12:44 AM
Moon Phase: First Quarter
Moon Illumination: 53.9%

Best Times for Fishing or Hunting

Major Periods

2:49 AM - 5:19 AM
7:13 PM - 9:43 PM

Minor Periods

1:42 PM - 3:12 PM
12:14 AM - 1:44 AM

Action Rating: 3 out of 5

Friday, July 4, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 59.6°F
Average Humidity: 22%
Chance of Rain: 0%
Wind: 13.4 mph
UV Index: 5

Air Quality

AQI: 1 - Good
PM2.5: 6.32 μg/m3
PM10: 6.73 μg/m3
Carbon Monoxide: 228.55 μg/m3
Nitrogen Dioxide: 5.17 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 110.08 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 1:02 PM
Sunset: 8:24 PM
Daylight: 14 hrs 42 mins
Moonrise: 3:11 PM
Moon Transit: 8:25 PM
Moonset: 1:06 AM
Moon Phase: First Quarter
Moon Illumination: 65.0%

Best Times for Fishing or Hunting

Major Periods

3:30 AM - 6:00 AM
7:55 PM - 10:25 PM

Minor Periods

2:41 PM - 4:11 PM
12:36 AM - 2:06 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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