Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

65.1°F

Measurement Time: Friday, July 31, 2026, 12:00 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 A GRAND CYN OF TUOLUMNE AB HETCH HETCHY
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 3,842 feet

Nearest Address:
White Wolf Road
Groveland, CA 95321
Tuolumne County

GPS Coordinates: 37.9165884, -119.6598938

Nearby Water Temperatures

Tuolumne River, Groveland, CA (7.7 mi)
Merced River, Yosemite Valley, CA (13.9 mi)
Cherry Creek, Groveland, CA (14.5 mi)
Tuolumne River, Groveland, CA (15.9 mi)
Tuolumne River, Groveland, CA (17.1 mi)
Middle Fork San Joaquin River, Mammoth Lakes, CA (37 mi)
Deadman Creek, Mammoth Lakes, CA (41 mi)
Hot Creek, Mammoth Lakes, CA (47.6 mi)
Hot Creek, Mammoth Lakes, CA (48.1 mi)
Hot Creek, Mammoth Lakes, CA (49.1 mi)
San Joaquin River, Friant, CA (64.5 mi)
Trout Creek, South Lake Tahoe, CA (71.4 mi)
Upper Truckee River, South Lake Tahoe, CA (71.8 mi)
Walker Lake, Walker Lake, NV (74.3 mi)
Walker Lake, Walker Lake, NV (76.8 mi)

Weather for Groveland, California

Current Weather

57.8°F
Sunny
Sunny
50.5°F
57.8°F
23%
E 4.3 mph
8.9 mph
57.8°F
20.4°F
0 in
0%
6 mi
1021 mbar
0.4

Five Day Weather Forecast

Sunny
Fri
H: 84°F
L: 52°F
Sunny
Sat
H: 84°F
L: 56°F
Sunny
Sun
H: 83°F
L: 56°F
Sunny
Mon
H: 84°F
L: 54°F
Sunny
Tue
H: 84°F
L: 53°F

Air Quality

AQI: 1 - Good
PM2.5: 3.9 μg/m3
PM10: 4.9 μg/m3
Carbon Monoxide: 90 μg/m3
Nitrogen Dioxide: 2.1 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 96 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:05 PM
Sunset: 8:09 PM
Daylight: 14 hrs 7 mins
Moonrise: 9:23 PM
Moon Transit: 2:25 AM
Moonset: 8:00 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

1:55 AM - 4:25 AM
10:12 AM - 12:42 AM

Minor Periods

8:53 PM - 10:23 PM
7:30 AM - 9:00 AM

Action Rating: 3 out of 5

Heat Advisory issued July 30 at 9:14PM PDT until August 3 at 11:00PM PDT by NWS Hanford CA

Effective: Thu July 30, 2026, 9:14 PM
Expires: Fri July 31, 2026, 6:00 AM

* WHAT...Afternoon high temperatures up to 108 expected. Heat Risk will range from Moderate to Major. * WHERE...San Joaquin Valley and adjacent foothills. * WHEN...From noon Saturday to 11 PM PDT Monday. * IMPACTS...Hot temperatures and limited overnight relief may cause heat illnesses. * ADDITIONAL DETAILS...Afternoon high temperatures up to 108 degrees will occur from Saturday into Monday. Overnight lows will range from the upper 60s in some valley locations to the lower 80s in some of the higher foothills.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Friday, July 31, 2026

Weather Forecast

Sunny
83.7°F
52°F
66.8°F
22%
0 in
0%
0%
11.6 mph
12.3


Air Quality

AQI: 1 - Good
PM2.5: 2.86 μg/m3
PM10: 3.61 μg/m3
Carbon Monoxide: 91.46 μg/m3
Nitrogen Dioxide: 1.69 μg/m3
Sulphur Dioxide: 0.79 μg/m3
Ozone: 96.92 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:05 PM
Sunset: 8:09 PM
Daylight: 14 hrs 7 mins
Moonrise: 9:23 PM
Moon Transit: 2:25 AM
Moonset: 8:00 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

1:55 AM - 4:25 AM
10:12 AM - 12:42 AM

Minor Periods

8:53 PM - 10:23 PM
7:30 AM - 9:00 AM

Action Rating: 3 out of 5

Saturday, August 1, 2026

Weather Forecast

Sunny
84.3°F
55.7°F
68.6°F
21%
0 in
1%
0%
11.9 mph
11.9


Air Quality

AQI: 1 - Good
PM2.5: 2.92 μg/m3
PM10: 3.58 μg/m3
Carbon Monoxide: 87.92 μg/m3
Nitrogen Dioxide: 1.55 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 101.29 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:05 PM
Sunset: 8:08 PM
Daylight: 14 hrs 5 mins
Moonrise: 9:46 PM
Moon Transit: 3:08 AM
Moonset: 9:03 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

2:38 AM - 5:08 AM
10:55 AM - 1:25 PM

Minor Periods

9:16 PM - 10:46 PM
8:33 AM - 10:03 AM

Action Rating: 2 out of 5

Sunday, August 2, 2026

Weather Forecast

Sunny
83.4°F
56.1°F
68.5°F
19%
0 in
0%
0%
13 mph
11.8


Air Quality

AQI: 1 - Good
PM2.5: 3 μg/m3
PM10: 3.5 μg/m3
Carbon Monoxide: 89.54 μg/m3
Nitrogen Dioxide: 1.4 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 102.88 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:04 PM
Sunset: 8:06 PM
Daylight: 14 hrs 4 mins
Moonrise: 10:10 PM
Moon Transit: 3:51 AM
Moonset: 10:07 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

3:21 AM - 5:51 AM
3:20 PM - 5:50 PM

Minor Periods

9:40 PM - 11:10 PM
9:37 AM - 11:07 AM

Action Rating: 3 out of 5

Monday, August 3, 2026

Weather Forecast

Sunny
83.5°F
54.4°F
67.7°F
21%
0 in
0%
0%
13.9 mph
11.7


Air Quality

AQI: 1 - Good
PM2.5: 3.13 μg/m3
PM10: 3.92 μg/m3
Carbon Monoxide: 97.15 μg/m3
Nitrogen Dioxide: 1.47 μg/m3
Sulphur Dioxide: 0.77 μg/m3
Ozone: 102.54 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:04 PM
Sunset: 8:05 PM
Daylight: 14 hrs 2 mins
Moonrise: 10:35 PM
Moon Transit: 12:00 AM
Moonset: 11:11 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

10:05 PM - 11:35 PM
10:41 AM - 12:11 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Sunny
83.5°F
52.9°F
66.7°F
19%
0 in
0%
0%
14.5 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 4.32 μg/m3
PM10: 5.57 μg/m3
Carbon Monoxide: 119.17 μg/m3
Nitrogen Dioxide: 2.87 μg/m3
Sulphur Dioxide: 0.82 μg/m3
Ozone: 98.33 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:04 PM
Sunset: 8:04 PM
Daylight: 14 hrs mins
Moonrise: 11:03 PM
Moon Transit: 5:21 AM
Moonset: 12:19 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

4:51 AM - 7:21 AM
1:09 PM - 3:39 PM

Minor Periods

12:00 AM - 12:00 AM
11:49 AM - 1:19 PM

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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