Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

50.7°F

Measurement Time: Monday, September 7, 2026, 1:00 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

63°F

Conditions: Clear

Humidity: 41%

Wind: 0 mph

Dew Point: 39°F

Weather Forecast

Tonight
52°F - Clear

Tuesday
82°F - Sunny

Tuesday Night
59°F - Mostly Cloudy

Wednesday
87°F - Mostly Sunny

Wednesday Night
60°F - Partly Cloudy

Thursday
87°F - Mostly Sunny

Thursday Night
57°F - Mostly Clear

Friday
82°F - Sunny

Friday Night
53°F - Mostly Clear

Saturday
77°F - Sunny

Saturday Night
51°F - Mostly Clear

Sunday
74°F - Sunny

Sunday Night
51°F - Mostly Clear

Monday
74°F - Sunny

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:57 AM
Sunset: 7:19 PM
Daylight: 12 hrs 44 mins

Moonrise: 2:26 AM
Moon Transit: 10:03 AM
Moonset: 5:30 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

5:54 PM - 8:24 PM
9:33 AM - 12:03 AM

Minor Periods

5:00 PM - 6:30 PM
1:56 AM - 3:26 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:35 AM
Sun Transit: 12:57 AM
Sunset: 7:19 PM
Daylight: 12 hrs 44 mins

Moonrise: 2:26 AM
Moon Transit: 10:03 AM
Moonset: 5:30 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

5:54 PM - 8:24 PM
9:33 AM - 12:03 AM

Minor Periods

5:00 PM - 6:30 PM
1:56 AM - 3:26 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:35 AM
Sun Transit: 12:56 AM
Sunset: 7:17 PM
Daylight: 12 hrs 42 mins

Moonrise: 3:41 AM
Moon Transit: 11:00 AM
Moonset: 6:05 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

6:48 PM - 9:18 PM
10:30 AM - 1:00 PM

Minor Periods

5:35 PM - 7:05 PM
3:11 AM - 4:41 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:35 AM
Sun Transit: 12:56 AM
Sunset: 7:17 PM
Daylight: 12 hrs 42 mins

Moonrise: 3:41 AM
Moon Transit: 11:00 AM
Moonset: 6:05 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

6:48 PM - 9:18 PM
10:30 AM - 1:00 PM

Minor Periods

5:35 PM - 7:05 PM
3:11 AM - 4:41 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:36 AM
Sun Transit: 12:56 AM
Sunset: 7:16 PM
Daylight: 12 hrs 40 mins

Moonrise: 4:55 AM
Moon Transit: 11:50 AM
Moonset: 6:35 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

7:38 PM - 10:08 PM
11:20 AM - 1:50 PM

Minor Periods

6:05 PM - 7:35 PM
4:25 AM - 5:55 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:36 AM
Sun Transit: 12:56 AM
Sunset: 7:16 PM
Daylight: 12 hrs 40 mins

Moonrise: 4:55 AM
Moon Transit: 11:50 AM
Moonset: 6:35 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

7:38 PM - 10:08 PM
11:20 AM - 1:50 PM

Minor Periods

6:05 PM - 7:35 PM
4:25 AM - 5:55 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:37 AM
Sun Transit: 12:56 AM
Sunset: 7:14 PM
Daylight: 12 hrs 37 mins

Moonrise: 6:05 AM
Moon Transit: 12:38 AM
Moonset: 7:01 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

8:25 PM - 10:55 PM
12:08 AM - 2:38 PM

Minor Periods

6:31 PM - 8:01 PM
5:35 AM - 7:05 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:37 AM
Sun Transit: 12:56 AM
Sunset: 7:14 PM
Daylight: 12 hrs 37 mins

Moonrise: 6:05 AM
Moon Transit: 12:38 AM
Moonset: 7:01 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

8:25 PM - 10:55 PM
12:08 AM - 2:38 PM

Minor Periods

6:31 PM - 8:01 PM
5:35 AM - 7:05 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:38 AM
Sun Transit: 12:55 AM
Sunset: 7:13 PM
Daylight: 12 hrs 35 mins

Moonrise: 7:13 AM
Moon Transit: 1:24 PM
Moonset: 7:25 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

9:11 PM - 11:41 PM
12:54 AM - 3:24 PM

Minor Periods

6:55 PM - 8:25 PM
6:43 AM - 8:13 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:38 AM
Sun Transit: 12:55 AM
Sunset: 7:13 PM
Daylight: 12 hrs 35 mins

Moonrise: 7:13 AM
Moon Transit: 1:24 PM
Moonset: 7:25 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

9:11 PM - 11:41 PM
12:54 AM - 3:24 PM

Minor Periods

6:55 PM - 8:25 PM
6:43 AM - 8:13 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:39 AM
Sun Transit: 12:55 AM
Sunset: 7:11 PM
Daylight: 12 hrs 32 mins

Moonrise: 8:20 AM
Moon Transit: 2:09 PM
Moonset: 7:50 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:39 PM - 4:09 PM

Minor Periods

7:20 PM - 8:50 PM
7:50 AM - 9:20 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:39 AM
Sun Transit: 12:55 AM
Sunset: 7:11 PM
Daylight: 12 hrs 32 mins

Moonrise: 8:20 AM
Moon Transit: 2:09 PM
Moonset: 7:50 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:39 PM - 4:09 PM

Minor Periods

7:20 PM - 8:50 PM
7:50 AM - 9:20 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:40 AM
Sun Transit: 12:55 AM
Sunset: 7:10 PM
Daylight: 12 hrs 30 mins

Moonrise: 9:25 AM
Moon Transit: 2:54 PM
Moonset: 8:16 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:24 PM - 4:54 PM

Minor Periods

7:46 PM - 9:16 PM
8:55 AM - 10:25 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:40 AM
Sun Transit: 12:55 AM
Sunset: 7:10 PM
Daylight: 12 hrs 30 mins

Moonrise: 9:25 AM
Moon Transit: 2:54 PM
Moonset: 8:16 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:24 PM - 4:54 PM

Minor Periods

7:46 PM - 9:16 PM
8:55 AM - 10:25 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

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: 6:41 AM
Sun Transit: 12:54 AM
Sunset: 7:08 PM
Daylight: 12 hrs 28 mins

Moonrise: 10:31 AM
Moon Transit: 3:40 PM
Moonset: 8:45 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:10 PM - 5:40 PM

Minor Periods

8:15 PM - 9:45 PM
10:01 AM - 11:31 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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