Water Temperature of the Merced River in Yosemite Valley, CA

Current Water Temperature

58.6°F

Measurement Time: Monday, August 31, 2026, 11:30 AM 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

76°F
Partly Cloudy
Partly Cloudy
39%
W 5 mph
49°F

Weather Forecast

Partly Cloudy
Tonight
53°F - Partly Cloudy
Sunny
Tuesday
74°F - Sunny
Mostly Clear
Tuesday Night
49°F - Mostly Clear
Sunny
Wednesday
71°F - Sunny
Clear
Wednesday Night
50°F - Clear
Sunny
Thursday
73°F - Sunny
Mostly Clear
Thursday Night
52°F - Mostly Clear
Sunny
Friday
73°F - Sunny
Mostly Clear
Friday Night
53°F - Mostly Clear
Sunny
Saturday
75°F - Sunny
Slight Chance Showers And Thunderstorms
Saturday Night
54°F - Slight Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms
Sunday
77°F - Slight Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms then Slight Chance Light Rain
Sunday Night
56°F - Slight Chance Showers And Thunderstorms then Slight Chance Light Rain
Slight Chance Showers And Thunderstorms
Labor Day
81°F - Slight Chance Showers And Thunderstorms

Astronomical

Sunrise: 6:28 AM
Sun Transit: 12:58 AM
Sunset: 7:28 PM
Daylight: 13 hrs mins
Moonrise: 9:07 PM
Moon Transit: 3:18 AM
Moonset: 10:10 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

2:48 AM - 5:18 AM
11:08 AM - 1:38 PM

Minor Periods

8:37 PM - 10:07 PM
9:40 AM - 11:10 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 12:58 AM
Sunset: 7:28 PM
Daylight: 13 hrs mins
Moonrise: 9:07 PM
Moon Transit: 3:18 AM
Moonset: 10:10 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

2:48 AM - 5:18 AM
11:08 AM - 1:38 PM

Minor Periods

8:37 PM - 10:07 PM
9:40 AM - 11:10 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:29 AM
Sun Transit: 12:58 AM
Sunset: 7:27 PM
Daylight: 12 hrs 58 mins
Moonrise: 9:39 PM
Moon Transit: 4:07 AM
Moonset: 11:20 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:37 AM - 6:07 AM
11:58 AM - 2:28 PM

Minor Periods

9:09 PM - 10:39 PM
10:50 AM - 12:20 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:29 AM
Sun Transit: 12:58 AM
Sunset: 7:27 PM
Daylight: 12 hrs 58 mins
Moonrise: 9:39 PM
Moon Transit: 4:07 AM
Moonset: 11:20 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:37 AM - 6:07 AM
11:58 AM - 2:28 PM

Minor Periods

9:09 PM - 10:39 PM
10:50 AM - 12:20 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:57 AM
Sunset: 7:25 PM
Daylight: 12 hrs 56 mins
Moonrise: 10:18 PM
Moon Transit: 5:00 AM
Moonset: 12:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:30 AM - 7:00 AM
12:52 AM - 3:22 PM

Minor Periods

9:48 PM - 11:18 PM
12:02 AM - 1:32 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:57 AM
Sunset: 7:25 PM
Daylight: 12 hrs 56 mins
Moonrise: 10:18 PM
Moon Transit: 5:00 AM
Moonset: 12:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:30 AM - 7:00 AM
12:52 AM - 3:22 PM

Minor Periods

9:48 PM - 11:18 PM
12:02 AM - 1:32 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:57 AM
Sunset: 7:24 PM
Daylight: 12 hrs 53 mins
Moonrise: 11:05 PM
Moon Transit: 5:56 AM
Moonset: 1:44 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:26 AM - 7:56 AM
1:50 PM - 4:20 PM

Minor Periods

12:00 AM - 12:00 AM
1:14 PM - 2:44 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 12:57 AM
Sunset: 7:24 PM
Daylight: 12 hrs 53 mins
Moonrise: 11:05 PM
Moon Transit: 5:56 AM
Moonset: 1:44 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:26 AM - 7:56 AM
1:50 PM - 4:20 PM

Minor Periods

12:00 AM - 12:00 AM
1:14 PM - 2:44 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 12:57 AM
Sunset: 7:22 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:05 AM
Moon Transit: 6:57 AM
Moonset: 2:54 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:27 AM - 8:57 AM
2:52 PM - 5:22 PM

Minor Periods

2:24 PM - 3:54 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 12:57 AM
Sunset: 7:22 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:05 AM
Moon Transit: 6:57 AM
Moonset: 2:54 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:27 AM - 8:57 AM
2:52 PM - 5:22 PM

Minor Periods

2:24 PM - 3:54 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 12:56 AM
Sunset: 7:21 PM
Daylight: 12 hrs 49 mins
Moonrise: 12:04 AM
Moon Transit: 8:00 AM
Moonset: 3:55 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

3:25 PM - 4:55 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 12:56 AM
Sunset: 7:21 PM
Daylight: 12 hrs 49 mins
Moonrise: 12:04 AM
Moon Transit: 8:00 AM
Moonset: 3:55 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

3:25 PM - 4:55 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:56 AM
Sunset: 7:19 PM
Daylight: 12 hrs 46 mins
Moonrise: 1:11 AM
Moon Transit: 9:02 AM
Moonset: 4:47 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:32 AM - 11:02 AM
4:56 PM - 7:26 PM

Minor Periods

4:17 PM - 5:47 PM
12:41 AM - 2:11 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:56 AM
Sunset: 7:19 PM
Daylight: 12 hrs 46 mins
Moonrise: 1:11 AM
Moon Transit: 9:02 AM
Moonset: 4:47 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:32 AM - 11:02 AM
4:56 PM - 7:26 PM

Minor Periods

4:17 PM - 5:47 PM
12:41 AM - 2:11 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:56 AM
Sunset: 7:18 PM
Daylight: 12 hrs 44 mins
Moonrise: 2:25 AM
Moon Transit: 10:02 AM
Moonset: 5:29 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

5:55 PM - 8:25 PM
9:32 AM - 12:02 AM

Minor Periods

4:59 PM - 6:29 PM
1:55 AM - 3:25 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.

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