Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

51.4°F

Measurement Time: Wednesday, May 20, 2026, 11:00 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

45.2°F
Sunny
Sunny
43.4°F
45.2°F
52%
ENE 4.5 mph
9.4 mph
43.4°F
26°F
0 in
3%
6 mi
1015 mbar
3

Five Day Weather Forecast

Sunny
Thu
H: 64°F
L: 42°F
Sunny
Fri
H: 64°F
L: 42°F
Sunny
Sat
H: 64°F
L: 42°F
Patchy rain nearby
Sun
H: 65°F
L: 42°F
Sunny
Mon
H: 63°F
L: 42°F

Air Quality

AQI: 1 - Good
PM2.5: 2.88 μg/m3
PM10: 3.98 μg/m3
Carbon Monoxide: 130.68 μg/m3
Nitrogen Dioxide: 0.78 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 118 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 12:55 AM
Sunset: 8:08 PM
Daylight: 14 hrs 24 mins
Moonrise: 10:43 AM
Moon Transit: 6:04 PM
Moonset: 12:40 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%

Best Times for Fishing or Hunting

Major Periods

12:59 AM - 3:29 AM
5:34 PM - 8:04 PM

Minor Periods

10:13 AM - 11:43 AM
12:10 AM - 1:40 AM

Action Rating: 3 out of 5

Thursday, May 21, 2026

Weather Forecast

Sunny
63.7°F
41.7°F
52.2°F
44%
0 in
0%
0%
12.5 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.68 μg/m3
PM10: 5.07 μg/m3
Carbon Monoxide: 124.24 μg/m3
Nitrogen Dioxide: 2.02 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 97.24 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 12:55 AM
Sunset: 8:08 PM
Daylight: 14 hrs 24 mins
Moonrise: 10:43 AM
Moon Transit: 6:04 PM
Moonset: 12:40 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%

Best Times for Fishing or Hunting

Major Periods

12:59 AM - 3:29 AM
5:34 PM - 8:04 PM

Minor Periods

10:13 AM - 11:43 AM
12:10 AM - 1:40 AM

Action Rating: 3 out of 5

Friday, May 22, 2026

Weather Forecast

Sunny
64.1°F
42.4°F
52.7°F
43%
0 in
0%
0%
11.9 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 4.01 μg/m3
PM10: 5.39 μg/m3
Carbon Monoxide: 128.84 μg/m3
Nitrogen Dioxide: 1.93 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 98.48 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 12:55 AM
Sunset: 8:09 PM
Daylight: 14 hrs 25 mins
Moonrise: 11:55 AM
Moon Transit: 6:54 PM
Moonset: 1:14 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%

Best Times for Fishing or Hunting

Major Periods

1:53 AM - 4:23 AM
6:24 PM - 8:54 PM

Minor Periods

11:25 AM - 12:55 AM
12:44 AM - 2:14 AM

Action Rating: 2 out of 5

Saturday, May 23, 2026

Weather Forecast

Sunny
64.3°F
42.3°F
52.7°F
39%
0 in
0%
0%
11.4 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 6.18 μg/m3
PM10: 11.54 μg/m3
Carbon Monoxide: 129.96 μg/m3
Nitrogen Dioxide: 1.56 μg/m3
Sulphur Dioxide: 1.09 μg/m3
Ozone: 123.36 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 12:56 AM
Sunset: 8:10 PM
Daylight: 14 hrs 27 mins
Moonrise: 1:02 PM
Moon Transit: 7:40 PM
Moonset: 1:43 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%

Best Times for Fishing or Hunting

Major Periods

2:42 AM - 5:12 AM
7:10 PM - 9:40 PM

Minor Periods

12:32 AM - 2:02 PM
1:13 AM - 2:43 AM

Action Rating: 2 out of 5

Sunday, May 24, 2026

Weather Forecast

Patchy rain nearby
65.2°F
42.2°F
53°F
42%
0.01 in
70%
0%
12.5 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 8.63 μg/m3
PM10: 16.87 μg/m3
Carbon Monoxide: 127.73 μg/m3
Nitrogen Dioxide: 1.57 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 119.64 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:56 AM
Sunset: 8:10 PM
Daylight: 14 hrs 28 mins
Moonrise: 2:06 PM
Moon Transit: 8:23 PM
Moonset: 2:09 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

3:27 AM - 5:57 AM
7:53 PM - 10:23 PM

Minor Periods

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

Action Rating: 4 out of 5

Monday, May 25, 2026

Weather Forecast

Sunny
62.6°F
42.2°F
49.9°F
52%
0 in
0%
0%
12.8 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 8.93 μg/m3
PM10: 15.26 μg/m3
Carbon Monoxide: 153.18 μg/m3
Nitrogen Dioxide: 2.24 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 97.62 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:56 AM
Sunset: 8:11 PM
Daylight: 14 hrs 30 mins
Moonrise: 3:08 PM
Moon Transit: 9:05 PM
Moonset: 2:32 AM
Moon Phase: First Quarter
Moon Illumination: 66.7%

Best Times for Fishing or Hunting

Major Periods

4:09 AM - 6:39 AM
8:35 PM - 11:05 PM

Minor Periods

2:38 PM - 4:08 PM
2:02 AM - 3:32 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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