Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

50.7°F

Measurement Time: Friday, September 25, 2026, 10:00 PM PDT

Temperature Locations

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Local Points of Interest

Hetch Hetchy Reservoir; Yosemite National Park; White Wolf, CA

Tuolumne River

Station Name: TUOLUMNE R NR HETCH HETCHY CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 3,484 feet

Nearest Address:
Hetch Hetchy Road
Groveland, CA 95321
Tuolumne County

GPS Coordinates: 37.93742147, -119.7982326

Nearby Water Temperatures

Cherry Creek, Groveland, CA (6.8 mi)
Tuolumne River, Groveland, CA (7.7 mi)
Tuolumne River, Groveland, CA (9.1 mi)
Tuolumne River, Groveland, CA (10.1 mi)
Merced River, Yosemite Valley, CA (19.3 mi)
Middle Fork San Joaquin River, Mammoth Lakes, CA (44.2 mi)
Deadman Creek, Mammoth Lakes, CA (48.6 mi)
Hot Creek, Mammoth Lakes, CA (55.1 mi)
Hot Creek, Mammoth Lakes, CA (55.6 mi)
Hot Creek, Mammoth Lakes, CA (56.7 mi)
San Joaquin River, Friant, CA (66 mi)
Trout Creek, South Lake Tahoe, CA (68.5 mi)
Upper Truckee River, South Lake Tahoe, CA (68.9 mi)
Walker Lake, Walker Lake, NV (78.6 mi)
General Creek, Tahoma, CA (78.9 mi)

Weather for Groveland, California

Current Weather

51°F
Clear
Clear
61%
E 5 mph
38°F

Weather Forecast

Clear
Overnight
49°F - Clear
Sunny
Saturday
74°F - Sunny
Partly Cloudy
Saturday Night
48°F - Partly Cloudy
Partly Sunny
Sunday
69°F - Partly Sunny
Partly Cloudy
Sunday Night
45°F - Partly Cloudy
Slight Chance Light Rain
Monday
69°F - Slight Chance Light Rain
Mostly Clear
Monday Night
47°F - Mostly Clear
Sunny
Tuesday
78°F - Sunny
Clear
Tuesday Night
50°F - Clear
Sunny
Wednesday
79°F - Sunny
Mostly Clear
Wednesday Night
51°F - Mostly Clear
Sunny
Thursday
79°F - Sunny
Mostly Clear
Thursday Night
50°F - Mostly Clear
Sunny
Friday
78°F - Sunny

Astronomical

Sunrise: 6:51 AM
Sun Transit: 12:50 AM
Sunset: 6:50 PM
Daylight: 11 hrs 59 mins
Moonrise: 6:43 PM
Moon Transit: 5:33 AM
Moonset: 6:50 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

5:03 AM - 7:33 AM
5:03 AM - 7:33 AM

Minor Periods

6:13 PM - 7:43 PM
6:20 AM - 7:50 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: 6:51 AM
Sun Transit: 12:50 AM
Sunset: 6:50 PM
Daylight: 11 hrs 59 mins
Moonrise: 6:43 PM
Moon Transit: 5:33 AM
Moonset: 6:50 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

5:03 AM - 7:33 AM
5:03 AM - 7:33 AM

Minor Periods

6:13 PM - 7:43 PM
6:20 AM - 7:50 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: 6:51 AM
Sun Transit: 12:50 AM
Sunset: 6:50 PM
Daylight: 11 hrs 59 mins
Moonrise: 6:43 PM
Moon Transit: 5:33 AM
Moonset: 6:50 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

5:03 AM - 7:33 AM
5:03 AM - 7:33 AM

Minor Periods

6:13 PM - 7:43 PM
6:20 AM - 7:50 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: 6:51 AM
Sun Transit: 12:50 AM
Sunset: 6:50 PM
Daylight: 11 hrs 59 mins
Moonrise: 6:43 PM
Moon Transit: 5:33 AM
Moonset: 6:50 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

5:03 AM - 7:33 AM
5:03 AM - 7:33 AM

Minor Periods

6:13 PM - 7:43 PM
6:20 AM - 7:50 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: 6:52 AM
Sun Transit: 12:50 AM
Sunset: 6:48 PM
Daylight: 11 hrs 57 mins
Moonrise: 7:09 PM
Moon Transit: 1:14 AM
Moonset: 7:58 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:44 AM - 3:14 AM
9:02 AM - 11:32 AM

Minor Periods

6:39 PM - 8:09 PM
7:28 AM - 8:58 AM

Action Rating: 4 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: 6:52 AM
Sun Transit: 12:50 AM
Sunset: 6:48 PM
Daylight: 11 hrs 57 mins
Moonrise: 7:09 PM
Moon Transit: 1:14 AM
Moonset: 7:58 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:44 AM - 3:14 AM
9:02 AM - 11:32 AM

Minor Periods

6:39 PM - 8:09 PM
7:28 AM - 8:58 AM

Action Rating: 4 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: 6:53 AM
Sun Transit: 12:49 AM
Sunset: 6:47 PM
Daylight: 11 hrs 54 mins
Moonrise: 7:40 PM
Moon Transit: 2:03 AM
Moonset: 9:09 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

1:33 AM - 4:03 AM
9:51 AM - 12:21 AM

Minor Periods

7:10 PM - 8:40 PM
8:39 AM - 10:09 AM

Action Rating: 4 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: 6:53 AM
Sun Transit: 12:49 AM
Sunset: 6:47 PM
Daylight: 11 hrs 54 mins
Moonrise: 7:40 PM
Moon Transit: 2:03 AM
Moonset: 9:09 AM
Moon Phase: Full
Moon Illumination: 92.4%

Best Times for Fishing or Hunting

Major Periods

1:33 AM - 4:03 AM
9:51 AM - 12:21 AM

Minor Periods

7:10 PM - 8:40 PM
8:39 AM - 10:09 AM

Action Rating: 4 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: 6:53 AM
Sun Transit: 12:49 AM
Sunset: 6:45 PM
Daylight: 11 hrs 52 mins
Moonrise: 8:18 PM
Moon Transit: 2:55 AM
Moonset: 10:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:25 AM - 4:55 AM
10:45 AM - 1:15 PM

Minor Periods

7:48 PM - 9:18 PM
9:52 AM - 11:22 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: 6:53 AM
Sun Transit: 12:49 AM
Sunset: 6:45 PM
Daylight: 11 hrs 52 mins
Moonrise: 8:18 PM
Moon Transit: 2:55 AM
Moonset: 10:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:25 AM - 4:55 AM
10:45 AM - 1:15 PM

Minor Periods

7:48 PM - 9:18 PM
9:52 AM - 11:22 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: 6:54 AM
Sun Transit: 12:49 AM
Sunset: 6:44 PM
Daylight: 11 hrs 49 mins
Moonrise: 9:03 PM
Moon Transit: 3:52 AM
Moonset: 11:36 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:22 AM - 5:52 AM
11:43 AM - 2:13 PM

Minor Periods

8:33 PM - 10:03 PM
11:06 AM - 12:36 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: 6:54 AM
Sun Transit: 12:49 AM
Sunset: 6:44 PM
Daylight: 11 hrs 49 mins
Moonrise: 9:03 PM
Moon Transit: 3:52 AM
Moonset: 11:36 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:22 AM - 5:52 AM
11:43 AM - 2:13 PM

Minor Periods

8:33 PM - 10:03 PM
11:06 AM - 12:36 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: 6:55 AM
Sun Transit: 12:48 AM
Sunset: 6:42 PM
Daylight: 11 hrs 47 mins
Moonrise: 9:59 PM
Moon Transit: 4:52 AM
Moonset: 12:48 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:22 AM - 6:52 AM
12:45 AM - 3:15 PM

Minor Periods

9:29 PM - 10:59 PM
12:18 AM - 1:48 PM

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: 6:55 AM
Sun Transit: 12:48 AM
Sunset: 6:42 PM
Daylight: 11 hrs 47 mins
Moonrise: 9:59 PM
Moon Transit: 4:52 AM
Moonset: 12:48 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:22 AM - 6:52 AM
12:45 AM - 3:15 PM

Minor Periods

9:29 PM - 10:59 PM
12:18 AM - 1:48 PM

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: 6:56 AM
Sun Transit: 12:48 AM
Sunset: 6:41 PM
Daylight: 11 hrs 45 mins
Moonrise: 11:04 PM
Moon Transit: 5:55 AM
Moonset: 1:52 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:25 AM - 7:55 AM
1:48 PM - 4:18 PM

Minor Periods

12:00 AM - 12:00 AM
1:22 PM - 2:52 PM

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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