Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

50.9°F

Measurement Time: Saturday, September 19, 2026, 5:00 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

56°F
Partly Cloudy
Partly Cloudy
43%
ENE 10 mph
34°F

Weather Forecast

Areas Of Smoke
Overnight
53°F - Areas Of Smoke
Areas Of Smoke
Sunday
79°F - Areas Of Smoke
Areas Of Smoke
Sunday Night
53°F - Areas Of Smoke
Slight Chance Light Rain
Monday
76°F - Slight Chance Light Rain
Partly Cloudy
Monday Night
50°F - Partly Cloudy
Sunny
Tuesday
77°F - Sunny
Mostly Clear
Tuesday Night
52°F - Mostly Clear
Sunny
Wednesday
81°F - Sunny
Partly Cloudy
Wednesday Night
53°F - Partly Cloudy
Sunny
Thursday
82°F - Sunny
Partly Cloudy
Thursday Night
54°F - Partly Cloudy
Mostly Sunny
Friday
79°F - Mostly Sunny
Partly Cloudy
Friday Night
51°F - Partly Cloudy
Sunny
Saturday
76°F - Sunny

Astronomical

Sunrise: 6:46 AM
Sun Transit: 12:52 AM
Sunset: 6:59 PM
Daylight: 12 hrs 13 mins
Moonrise: 3:59 PM
Moon Transit: 8:41 PM
Moonset: 12:29 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

3:40 AM - 6:10 AM
8:11 PM - 10:41 PM

Minor Periods

3:29 PM - 4:59 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: 6:46 AM
Sun Transit: 12:52 AM
Sunset: 6:59 PM
Daylight: 12 hrs 13 mins
Moonrise: 3:59 PM
Moon Transit: 8:41 PM
Moonset: 12:29 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

3:40 AM - 6:10 AM
8:11 PM - 10:41 PM

Minor Periods

3:29 PM - 4:59 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: 6:46 AM
Sun Transit: 12:52 AM
Sunset: 6:59 PM
Daylight: 12 hrs 13 mins
Moonrise: 3:59 PM
Moon Transit: 8:41 PM
Moonset: 12:29 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

3:40 AM - 6:10 AM
8:11 PM - 10:41 PM

Minor Periods

3:29 PM - 4:59 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: 6:46 AM
Sun Transit: 12:52 AM
Sunset: 6:59 PM
Daylight: 12 hrs 13 mins
Moonrise: 3:59 PM
Moon Transit: 8:41 PM
Moonset: 12:29 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

3:40 AM - 6:10 AM
8:11 PM - 10:41 PM

Minor Periods

3:29 PM - 4:59 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: 6:47 AM
Sun Transit: 12:52 AM
Sunset: 6:57 PM
Daylight: 12 hrs 11 mins
Moonrise: 4:33 PM
Moon Transit: 9:29 PM
Moonset: 1:29 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

4:30 AM - 7:00 AM
8:59 PM - 11:29 PM

Minor Periods

4:03 PM - 5:33 PM
12:59 AM - 2:29 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: 6:47 AM
Sun Transit: 12:52 AM
Sunset: 6:57 PM
Daylight: 12 hrs 11 mins
Moonrise: 4:33 PM
Moon Transit: 9:29 PM
Moonset: 1:29 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

4:30 AM - 7:00 AM
8:59 PM - 11:29 PM

Minor Periods

4:03 PM - 5:33 PM
12:59 AM - 2:29 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: 6:47 AM
Sun Transit: 12:51 AM
Sunset: 6:56 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:03 PM
Moon Transit: 10:15 PM
Moonset: 2:32 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

5:16 AM - 7:46 AM
12:00 AM - 12:00 AM

Minor Periods

4:33 PM - 6:03 PM
2:02 AM - 3:32 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: 6:47 AM
Sun Transit: 12:51 AM
Sunset: 6:56 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:03 PM
Moon Transit: 10:15 PM
Moonset: 2:32 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

5:16 AM - 7:46 AM
12:00 AM - 12:00 AM

Minor Periods

4:33 PM - 6:03 PM
2:02 AM - 3:32 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: 6:48 AM
Sun Transit: 12:51 AM
Sunset: 6:54 PM
Daylight: 12 hrs 6 mins
Moonrise: 5:29 PM
Moon Transit: 11:00 PM
Moonset: 3:35 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

6:02 AM - 8:32 AM
12:00 AM - 12:00 AM

Minor Periods

4:59 PM - 6:29 PM
3:05 AM - 4:35 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: 6:48 AM
Sun Transit: 12:51 AM
Sunset: 6:54 PM
Daylight: 12 hrs 6 mins
Moonrise: 5:29 PM
Moon Transit: 11:00 PM
Moonset: 3:35 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

6:02 AM - 8:32 AM
12:00 AM - 12:00 AM

Minor Periods

4:59 PM - 6:29 PM
3:05 AM - 4:35 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: 6:49 AM
Sun Transit: 12:51 AM
Sunset: 6:53 PM
Daylight: 12 hrs 4 mins
Moonrise: 5:54 PM
Moon Transit: 11:44 PM
Moonset: 4:40 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

6:46 AM - 9:16 AM
12:00 AM - 12:00 AM

Minor Periods

5:24 PM - 6:54 PM
4:10 AM - 5:40 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: 6:49 AM
Sun Transit: 12:51 AM
Sunset: 6:53 PM
Daylight: 12 hrs 4 mins
Moonrise: 5:54 PM
Moon Transit: 11:44 PM
Moonset: 4:40 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.0%

Best Times for Fishing or Hunting

Major Periods

6:46 AM - 9:16 AM
12:00 AM - 12:00 AM

Minor Periods

5:24 PM - 6:54 PM
4:10 AM - 5:40 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: 6:50 AM
Sun Transit: 12:50 AM
Sunset: 6:51 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:18 PM
Moon Transit: 12:00 AM
Moonset: 5:44 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:48 PM - 7:18 PM
5:14 AM - 6:44 AM

Action Rating: 5 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: 6:50 AM
Sun Transit: 12:50 AM
Sunset: 6:51 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:18 PM
Moon Transit: 12:00 AM
Moonset: 5:44 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:48 PM - 7:18 PM
5:14 AM - 6:44 AM

Action Rating: 5 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

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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