Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

64.0°F

Measurement Time: Wednesday, August 26, 2026, 9:15 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

70°F
Clear
Clear
41%
ENE 8 mph
45°F

Weather Forecast

Clear
Overnight
67°F - Clear
Patchy Smoke
Thursday
95°F - Patchy Smoke
Light Rain Likely
Thursday Night
66°F - Light Rain Likely
Rain Likely then Chance Showers And Thunderstorms
Friday
85°F - Rain Likely then Chance Showers And Thunderstorms
Chance Light Rain
Friday Night
60°F - Chance Light Rain
Sunny
Saturday
87°F - Sunny
Clear
Saturday Night
58°F - Clear
Sunny
Sunday
87°F - Sunny
Clear
Sunday Night
56°F - Clear
Sunny
Monday
84°F - Sunny
Mostly Clear
Monday Night
54°F - Mostly Clear
Sunny
Tuesday
82°F - Sunny
Slight Chance Light Rain
Tuesday Night
54°F - Slight Chance Light Rain
Slight Chance Light Rain
Wednesday
83°F - Slight Chance Light Rain

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:01 PM
Sunset: 7:36 PM
Daylight: 13 hrs 10 mins
Moonrise: 7:28 PM
Moon Transit: 12:22 AM
Moonset: 5:51 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
8:08 AM - 10:38 AM

Minor Periods

6:58 PM - 8:28 PM
5:21 AM - 6:51 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: 6:26 AM
Sun Transit: 1:01 PM
Sunset: 7:36 PM
Daylight: 13 hrs 10 mins
Moonrise: 7:28 PM
Moon Transit: 12:22 AM
Moonset: 5:51 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
8:08 AM - 10:38 AM

Minor Periods

6:58 PM - 8:28 PM
5:21 AM - 6:51 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: 6:26 AM
Sun Transit: 1:01 PM
Sunset: 7:36 PM
Daylight: 13 hrs 10 mins
Moonrise: 7:28 PM
Moon Transit: 12:22 AM
Moonset: 5:51 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
8:08 AM - 10:38 AM

Minor Periods

6:58 PM - 8:28 PM
5:21 AM - 6:51 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: 6:26 AM
Sun Transit: 1:01 PM
Sunset: 7:36 PM
Daylight: 13 hrs 10 mins
Moonrise: 7:28 PM
Moon Transit: 12:22 AM
Moonset: 5:51 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
8:08 AM - 10:38 AM

Minor Periods

6:58 PM - 8:28 PM
5:21 AM - 6:51 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: 6:27 AM
Sun Transit: 1:00 PM
Sunset: 7:35 PM
Daylight: 13 hrs 8 mins
Moonrise: 7:52 PM
Moon Transit: 1:07 AM
Moonset: 6:55 AM
Moon Phase: Full
Moon Illumination: 98.7%

Best Times for Fishing or Hunting

Major Periods

12:37 AM - 3:07 AM
8:52 AM - 11:22 AM

Minor Periods

7:22 PM - 8:52 PM
6:25 AM - 7:55 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: 6:27 AM
Sun Transit: 1:00 PM
Sunset: 7:35 PM
Daylight: 13 hrs 8 mins
Moonrise: 7:52 PM
Moon Transit: 1:07 AM
Moonset: 6:55 AM
Moon Phase: Full
Moon Illumination: 98.7%

Best Times for Fishing or Hunting

Major Periods

12:37 AM - 3:07 AM
8:52 AM - 11:22 AM

Minor Periods

7:22 PM - 8:52 PM
6:25 AM - 7:55 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: 6:28 AM
Sun Transit: 1:00 PM
Sunset: 7:33 PM
Daylight: 13 hrs 5 mins
Moonrise: 8:16 PM
Moon Transit: 1:50 AM
Moonset: 7:59 AM
Moon Phase: Full
Moon Illumination: 95.0%

Best Times for Fishing or Hunting

Major Periods

1:20 AM - 3:50 AM
9:19 PM - 11:49 PM

Minor Periods

7:46 PM - 9:16 PM
7:29 AM - 8:59 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: 6:28 AM
Sun Transit: 1:00 PM
Sunset: 7:33 PM
Daylight: 13 hrs 5 mins
Moonrise: 8:16 PM
Moon Transit: 1:50 AM
Moonset: 7:59 AM
Moon Phase: Full
Moon Illumination: 95.0%

Best Times for Fishing or Hunting

Major Periods

1:20 AM - 3:50 AM
9:19 PM - 11:49 PM

Minor Periods

7:46 PM - 9:16 PM
7:29 AM - 8:59 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: 6:28 AM
Sun Transit: 1:00 PM
Sunset: 7:32 PM
Daylight: 13 hrs 3 mins
Moonrise: 8:41 PM
Moon Transit: 12:00 AM
Moonset: 9:04 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.9%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

8:11 PM - 9:41 PM
8:34 AM - 10:04 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: 6:28 AM
Sun Transit: 1:00 PM
Sunset: 7:32 PM
Daylight: 13 hrs 3 mins
Moonrise: 8:41 PM
Moon Transit: 12:00 AM
Moonset: 9:04 AM
Moon Phase: Waning Gibbous
Moon Illumination: 88.9%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

8:11 PM - 9:41 PM
8:34 AM - 10:04 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: 6:29 AM
Sun Transit: 1:00 PM
Sunset: 7:30 PM
Daylight: 13 hrs 1 mins
Moonrise: 9:08 PM
Moon Transit: 3:20 AM
Moonset: 10:12 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

2:50 AM - 5:20 AM
11:06 AM - 1:36 PM

Minor Periods

8:38 PM - 10:08 PM
9:42 AM - 11:12 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: 6:29 AM
Sun Transit: 1:00 PM
Sunset: 7:30 PM
Daylight: 13 hrs 1 mins
Moonrise: 9:08 PM
Moon Transit: 3:20 AM
Moonset: 10:12 AM
Moon Phase: Waning Gibbous
Moon Illumination: 80.9%

Best Times for Fishing or Hunting

Major Periods

2:50 AM - 5:20 AM
11:06 AM - 1:36 PM

Minor Periods

8:38 PM - 10:08 PM
9:42 AM - 11:12 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: 6:30 AM
Sun Transit: 1:00 PM
Sunset: 7:29 PM
Daylight: 12 hrs 58 mins
Moonrise: 9:40 PM
Moon Transit: 4:09 AM
Moonset: 11:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:39 AM - 6:09 AM
11:56 AM - 2:26 PM

Minor Periods

9:10 PM - 10:40 PM
10:52 AM - 12:22 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: 7:29 PM
Daylight: 12 hrs 58 mins
Moonrise: 9:40 PM
Moon Transit: 4:09 AM
Moonset: 11:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:39 AM - 6:09 AM
11:56 AM - 2:26 PM

Minor Periods

9:10 PM - 10:40 PM
10:52 AM - 12:22 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: 6:31 AM
Sun Transit: 1:00 PM
Sunset: 7:27 PM
Daylight: 12 hrs 56 mins
Moonrise: 10:19 PM
Moon Transit: 5:01 AM
Moonset: 12:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:31 AM - 7:01 AM
12:50 AM - 3:20 PM

Minor Periods

9:49 PM - 11:19 PM
12:04 AM - 1:34 PM

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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