Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

65.3°F

Measurement Time: Wednesday, September 23, 2026, 11:15 AM 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

85°F
Haze
Haze
28%
WSW 5 mph
48°F

Weather Forecast

Haze
Tonight
60°F - Haze
Haze
Thursday
92°F - Haze
Partly Cloudy then Patchy Smoke
Thursday Night
60°F - Partly Cloudy then Patchy Smoke
Sunny
Friday
86°F - Sunny
Mostly Clear
Friday Night
56°F - Mostly Clear
Sunny
Saturday
85°F - Sunny
Partly Cloudy
Saturday Night
56°F - Partly Cloudy
Sunny
Sunday
80°F - Sunny
Mostly Clear
Sunday Night
51°F - Mostly Clear
Sunny
Monday
80°F - Sunny
Clear
Monday Night
53°F - Clear
Sunny
Tuesday
85°F - Sunny
Mostly Clear
Tuesday Night
55°F - Mostly Clear
Sunny
Wednesday
87°F - Sunny

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

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

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: 12:51 AM
Sunset: 6:53 PM
Daylight: 12 hrs 4 mins
Moonrise: 5:55 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

6:45 AM - 9:15 AM
12:00 AM - 12:00 AM

Minor Periods

5:25 PM - 6:55 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: 12:51 AM
Sunset: 6:53 PM
Daylight: 12 hrs 4 mins
Moonrise: 5:55 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

6:45 AM - 9:15 AM
12:00 AM - 12:00 AM

Minor Periods

5:25 PM - 6:55 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: 6:51 AM
Sun Transit: 12:51 AM
Sunset: 6:52 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:19 PM
Moon Transit: 12:00 AM
Moonset: 5:45 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:30 AM - 10:00 AM

Minor Periods

5:49 PM - 7:19 PM
5:15 AM - 6:45 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: 12:51 AM
Sunset: 6:52 PM
Daylight: 12 hrs 1 mins
Moonrise: 6:19 PM
Moon Transit: 12:00 AM
Moonset: 5:45 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:30 AM - 10:00 AM

Minor Periods

5:49 PM - 7:19 PM
5:15 AM - 6:45 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: 12:51 AM
Sunset: 6:50 PM
Daylight: 11 hrs 59 mins
Moonrise: 6:44 PM
Moon Transit: 5:33 AM
Moonset: 6:51 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

6:14 PM - 7:44 PM
6:21 AM - 7:51 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: 12:51 AM
Sunset: 6:50 PM
Daylight: 11 hrs 59 mins
Moonrise: 6:44 PM
Moon Transit: 5:33 AM
Moonset: 6:51 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

6:14 PM - 7:44 PM
6:21 AM - 7:51 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: 6:49 PM
Daylight: 11 hrs 57 mins
Moonrise: 7:10 PM
Moon Transit: 1:15 AM
Moonset: 7:58 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:45 AM - 3:15 AM
9:01 AM - 11:31 AM

Minor Periods

6:40 PM - 8:10 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: 6:49 PM
Daylight: 11 hrs 57 mins
Moonrise: 7:10 PM
Moon Transit: 1:15 AM
Moonset: 7:58 AM
Moon Phase: Full
Moon Illumination: 97.3%

Best Times for Fishing or Hunting

Major Periods

12:45 AM - 3:15 AM
9:01 AM - 11:31 AM

Minor Periods

6:40 PM - 8:10 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: 12:50 AM
Sunset: 6:47 PM
Daylight: 11 hrs 54 mins
Moonrise: 7:41 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

7:11 PM - 8:41 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: 12:50 AM
Sunset: 6:47 PM
Daylight: 11 hrs 54 mins
Moonrise: 7:41 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

7:11 PM - 8:41 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: 6:54 AM
Sun Transit: 12:50 AM
Sunset: 6:46 PM
Daylight: 11 hrs 52 mins
Moonrise: 8:19 PM
Moon Transit: 2:56 AM
Moonset: 10:23 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:26 AM - 4:56 AM
10:45 AM - 1:15 PM

Minor Periods

7:49 PM - 9:19 PM
9:53 AM - 11:23 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: 12:50 AM
Sunset: 6:46 PM
Daylight: 11 hrs 52 mins
Moonrise: 8:19 PM
Moon Transit: 2:56 AM
Moonset: 10:23 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:26 AM - 4:56 AM
10:45 AM - 1:15 PM

Minor Periods

7:49 PM - 9:19 PM
9:53 AM - 11:23 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: 12:49 AM
Sunset: 6:44 PM
Daylight: 11 hrs 49 mins
Moonrise: 9:04 PM
Moon Transit: 3:52 AM
Moonset: 11:37 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

8:34 PM - 10:04 PM
11:07 AM - 12:37 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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