Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

60.1°F

Measurement Time: Wednesday, September 16, 2026, 9:00 PM PDT

Temperature Locations

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Local Points of Interest

Stanislaus National Forest; Mather, CA; Harden Flat, CA

Tuolumne River

Station Name: TUOLUMNE R AB EARLY INTAKE NR MATHER CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 2,493 feet

Nearest Address:
Preston Falls Trail
Groveland, CA 95321
Tuolumne County

GPS Coordinates: 37.87936848, -119.947126

Nearby Water Temperatures

Tuolumne River, Groveland, CA (1.3 mi)
Cherry Creek, Groveland, CA (6.3 mi)
Tuolumne River, Groveland, CA (9.1 mi)
Tuolumne River, Groveland, CA (15.9 mi)
Merced River, Yosemite Valley, CA (23.5 mi)
Middle Fork San Joaquin River, Mammoth Lakes, CA (50 mi)
Deadman Creek, Mammoth Lakes, CA (55.7 mi)
Hot Creek, Mammoth Lakes, CA (61.6 mi)
Hot Creek, Mammoth Lakes, CA (62.1 mi)
San Joaquin River, Friant, CA (63 mi)
Hot Creek, Mammoth Lakes, CA (63.4 mi)
Trout Creek, South Lake Tahoe, CA (71.9 mi)
Upper Truckee River, South Lake Tahoe, CA (72.1 mi)
General Creek, Tahoma, CA (81.5 mi)
South Fork American River, Rescue, CA (83.9 mi)

Weather for Groveland, California

Current Weather

55°F
Mostly Clear
Mostly Clear
60%
E 5 mph
41°F

Weather Forecast

Mostly Clear
Overnight
53°F - Mostly Clear
Sunny
Thursday
76°F - Sunny
Clear
Thursday Night
52°F - Clear
Sunny
Friday
82°F - Sunny
Clear
Friday Night
56°F - Clear
Sunny
Saturday
88°F - Sunny
Partly Cloudy
Saturday Night
59°F - Partly Cloudy
Mostly Sunny
Sunday
88°F - Mostly Sunny
Partly Cloudy
Sunday Night
60°F - Partly Cloudy
Mostly Sunny
Monday
88°F - Mostly Sunny
Mostly Clear
Monday Night
58°F - Mostly Clear
Sunny
Tuesday
89°F - Sunny
Mostly Clear
Tuesday Night
58°F - Mostly Clear
Sunny
Wednesday
91°F - Sunny

Astronomical

Sunrise: 6:44 AM
Sun Transit: 12:54 AM
Sunset: 7:04 PM
Daylight: 12 hrs 20 mins
Moonrise: 1:37 PM
Moon Transit: 6:09 PM
Moonset: 10:41 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

1:06 AM - 3:36 AM
5:39 PM - 8:09 PM

Minor Periods

10:11 PM - 11:41 PM
1:07 PM - 2:37 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: 6:44 AM
Sun Transit: 12:54 AM
Sunset: 7:04 PM
Daylight: 12 hrs 20 mins
Moonrise: 1:37 PM
Moon Transit: 6:09 PM
Moonset: 10:41 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

1:06 AM - 3:36 AM
5:39 PM - 8:09 PM

Minor Periods

10:11 PM - 11:41 PM
1:07 PM - 2:37 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: 6:44 AM
Sun Transit: 12:54 AM
Sunset: 7:04 PM
Daylight: 12 hrs 20 mins
Moonrise: 1:37 PM
Moon Transit: 6:09 PM
Moonset: 10:41 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

1:06 AM - 3:36 AM
5:39 PM - 8:09 PM

Minor Periods

10:11 PM - 11:41 PM
1:07 PM - 2:37 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: 6:44 AM
Sun Transit: 12:54 AM
Sunset: 7:04 PM
Daylight: 12 hrs 20 mins
Moonrise: 1:37 PM
Moon Transit: 6:09 PM
Moonset: 10:41 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

1:06 AM - 3:36 AM
5:39 PM - 8:09 PM

Minor Periods

10:11 PM - 11:41 PM
1:07 PM - 2:37 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: 6:45 AM
Sun Transit: 12:53 AM
Sunset: 7:03 PM
Daylight: 12 hrs 18 mins
Moonrise: 2:31 PM
Moon Transit: 7:01 PM
Moonset: 11:32 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

1:57 AM - 4:27 AM
6:31 PM - 9:01 PM

Minor Periods

12:00 AM - 12:00 AM
2:01 PM - 3:31 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: 6:45 AM
Sun Transit: 12:53 AM
Sunset: 7:03 PM
Daylight: 12 hrs 18 mins
Moonrise: 2:31 PM
Moon Transit: 7:01 PM
Moonset: 11:32 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

1:57 AM - 4:27 AM
6:31 PM - 9:01 PM

Minor Periods

12:00 AM - 12:00 AM
2:01 PM - 3:31 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: 6:45 AM
Sun Transit: 12:53 AM
Sunset: 7:01 PM
Daylight: 12 hrs 16 mins
Moonrise: 3:18 PM
Moon Transit: 7:52 PM
Moonset: 12:32 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

2:48 AM - 5:18 AM
7:22 PM - 9:52 PM

Minor Periods

2:48 PM - 4:18 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: 6:45 AM
Sun Transit: 12:53 AM
Sunset: 7:01 PM
Daylight: 12 hrs 16 mins
Moonrise: 3:18 PM
Moon Transit: 7:52 PM
Moonset: 12:32 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

2:48 AM - 5:18 AM
7:22 PM - 9:52 PM

Minor Periods

2:48 PM - 4:18 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: 6:46 AM
Sun Transit: 12:53 AM
Sunset: 7:00 PM
Daylight: 12 hrs 13 mins
Moonrise: 3:59 PM
Moon Transit: 8:42 PM
Moonset: 12:30 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

3:39 AM - 6:09 AM
8:12 PM - 10:42 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: 12:53 AM
Sunset: 7:00 PM
Daylight: 12 hrs 13 mins
Moonrise: 3:59 PM
Moon Transit: 8:42 PM
Moonset: 12:30 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

3:39 AM - 6:09 AM
8:12 PM - 10:42 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: 6:58 PM
Daylight: 12 hrs 11 mins
Moonrise: 4:34 PM
Moon Transit: 9:30 PM
Moonset: 1:30 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

4:28 AM - 6:58 AM
9:00 PM - 11:30 PM

Minor Periods

4:04 PM - 5:34 PM
1:00 AM - 2:30 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: 6:58 PM
Daylight: 12 hrs 11 mins
Moonrise: 4:34 PM
Moon Transit: 9:30 PM
Moonset: 1:30 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

4:28 AM - 6:58 AM
9:00 PM - 11:30 PM

Minor Periods

4:04 PM - 5:34 PM
1:00 AM - 2:30 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: 12:52 AM
Sunset: 6:57 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:03 PM
Moon Transit: 10:16 PM
Moonset: 2:33 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
2:03 AM - 3:33 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: 12:52 AM
Sunset: 6:57 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:03 PM
Moon Transit: 10:16 PM
Moonset: 2:33 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
2:03 AM - 3:33 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: 6:49 AM
Sun Transit: 12:52 AM
Sunset: 6:55 PM
Daylight: 12 hrs 6 mins
Moonrise: 5:30 PM
Moon Transit: 11:00 PM
Moonset: 3:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.9%

Best Times for Fishing or Hunting

Major Periods

6:01 AM - 8:31 AM
12:00 AM - 12:00 AM

Minor Periods

5:00 PM - 6:30 PM
3:06 AM - 4:36 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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