Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

50.7°F

Measurement Time: Tuesday, September 1, 2026, 11:00 AM 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

65°F
Clear
Clear
35%
SW 10 mph
37°F

Weather Forecast

Mostly Clear
Tonight
41°F - Mostly Clear
Sunny
Wednesday
67°F - Sunny
Mostly Clear
Wednesday Night
43°F - Mostly Clear
Sunny
Thursday
69°F - Sunny
Partly Cloudy
Thursday Night
44°F - Partly Cloudy
Sunny
Friday
68°F - Sunny
Mostly Clear
Friday Night
44°F - Mostly Clear
Sunny
Saturday
72°F - Sunny
Mostly Clear then Slight Chance Light Rain
Saturday Night
47°F - Mostly Clear then Slight Chance Light Rain
Slight Chance Showers And Thunderstorms
Sunday
72°F - Slight Chance Showers And Thunderstorms
Slight Chance Light Rain
Sunday Night
49°F - Slight Chance Light Rain
Slight Chance Light Rain
Labor Day
73°F - Slight Chance Light Rain
Slight Chance Light Rain
Monday Night
51°F - Slight Chance Light Rain
Slight Chance Light Rain
Tuesday
76°F - Slight Chance Light Rain

Astronomical

Sunrise: 6:30 AM
Sun Transit: 1:00 PM
Sunset: 7:28 PM
Daylight: 12 hrs 59 mins
Moonrise: 9:39 PM
Moon Transit: 4:08 AM
Moonset: 11:21 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:38 AM - 6:08 AM
11:57 AM - 2:27 PM

Minor Periods

9:09 PM - 10:39 PM
10:51 AM - 12:21 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: 1:00 PM
Sunset: 7:28 PM
Daylight: 12 hrs 59 mins
Moonrise: 9:39 PM
Moon Transit: 4:08 AM
Moonset: 11:21 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:38 AM - 6:08 AM
11:57 AM - 2:27 PM

Minor Periods

9:09 PM - 10:39 PM
10:51 AM - 12:21 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: 12:58 AM
Sunset: 7:27 PM
Daylight: 12 hrs 56 mins
Moonrise: 10:18 PM
Moon Transit: 5:00 AM
Moonset: 12:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:30 AM - 7:00 AM
12:51 AM - 3:21 PM

Minor Periods

9:48 PM - 11:18 PM
12:04 AM - 1:34 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: 6:30 AM
Sun Transit: 12:58 AM
Sunset: 7:27 PM
Daylight: 12 hrs 56 mins
Moonrise: 10:18 PM
Moon Transit: 5:00 AM
Moonset: 12:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:30 AM - 7:00 AM
12:51 AM - 3:21 PM

Minor Periods

9:48 PM - 11:18 PM
12:04 AM - 1:34 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: 6:31 AM
Sun Transit: 12:58 AM
Sunset: 7:25 PM
Daylight: 12 hrs 54 mins
Moonrise: 11:05 PM
Moon Transit: 5:57 AM
Moonset: 1:46 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:27 AM - 7:57 AM
1:49 PM - 4:19 PM

Minor Periods

12:00 AM - 12:00 AM
1:16 PM - 2:46 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: 12:58 AM
Sunset: 7:25 PM
Daylight: 12 hrs 54 mins
Moonrise: 11:05 PM
Moon Transit: 5:57 AM
Moonset: 1:46 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:27 AM - 7:57 AM
1:49 PM - 4:19 PM

Minor Periods

12:00 AM - 12:00 AM
1:16 PM - 2:46 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: 6:32 AM
Sun Transit: 12:58 AM
Sunset: 7:24 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:05 AM
Moon Transit: 6:58 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:28 AM - 8:58 AM
2:51 PM - 5:21 PM

Minor Periods

2:26 PM - 3:56 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: 12:58 AM
Sunset: 7:24 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:05 AM
Moon Transit: 6:58 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:28 AM - 8:58 AM
2:51 PM - 5:21 PM

Minor Periods

2:26 PM - 3:56 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: 6:33 AM
Sun Transit: 12:57 AM
Sunset: 7:22 PM
Daylight: 12 hrs 49 mins
Moonrise: 12:04 AM
Moon Transit: 8:01 AM
Moonset: 3:57 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:31 AM - 10:01 AM
3:54 PM - 6:24 PM

Minor Periods

3:27 PM - 4:57 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: 12:57 AM
Sunset: 7:22 PM
Daylight: 12 hrs 49 mins
Moonrise: 12:04 AM
Moon Transit: 8:01 AM
Moonset: 3:57 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:31 AM - 10:01 AM
3:54 PM - 6:24 PM

Minor Periods

3:27 PM - 4:57 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: 6:34 AM
Sun Transit: 12:57 AM
Sunset: 7:21 PM
Daylight: 12 hrs 47 mins
Moonrise: 1:11 AM
Moon Transit: 9:03 AM
Moonset: 4:49 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:33 AM - 11:03 AM
4:55 PM - 7:25 PM

Minor Periods

4:19 PM - 5:49 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: 12:57 AM
Sunset: 7:21 PM
Daylight: 12 hrs 47 mins
Moonrise: 1:11 AM
Moon Transit: 9:03 AM
Moonset: 4:49 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:33 AM - 11:03 AM
4:55 PM - 7:25 PM

Minor Periods

4:19 PM - 5:49 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: 6:35 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

°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: 6:35 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

°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: 6:35 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

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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