Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

71.6°F

Measurement Time: Sunday, July 19, 2026, 11:15 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

71.4°F
Partly Cloudy
Partly Cloudy
59.7°F
73.7°F
29%
W 8.1 mph
9.3 mph
71.4°F
37.9°F
0 in
27%
6 mi
1015 mbar
1.4

Five Day Weather Forecast

Sunny
Sun
H: 77°F
L: 53°F
Sunny
Mon
H: 76°F
L: 53°F
Partly Cloudy
Tue
H: 75°F
L: 57°F
Sunny
Wed
H: 78°F
L: 54°F
Sunny
Thu
H: 81°F
L: 55°F

Air Quality

AQI: 1 - Good
PM2.5: 6.7 μg/m3
PM10: 10.1 μg/m3
Carbon Monoxide: 97 μg/m3
Nitrogen Dioxide: 0.3 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 107 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:05 PM
Sunset: 8:18 PM
Daylight: 14 hrs 27 mins
Moonrise: 11:50 AM
Moon Transit: 5:41 PM
Moonset: 11:23 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

12:45 AM - 3:15 AM
5:11 PM - 7:41 PM

Minor Periods

12:00 AM - 12:00 AM
11:20 AM - 12:50 AM

Action Rating: 2 out of 5

Flood Watch issued July 19 at 11:41AM PDT until July 20 at 11:00PM PDT by NWS Reno NV

Effective: Sun July 19, 2026, 11:41 AM
Expires: Mon July 20, 2026, 11:45 AM

* WHAT...Flash flooding caused by excessive rainfall is possible due to thunderstorms. * WHERE...Portions of east central California, including the following area, Mono County and western Nevada, including the following area, Mineral and Southern Lyon Counties. * WHEN...From Monday afternoon through Monday evening. * IMPACTS...Excessive runoff may result in flooding of creeks, streams, urban areas, burn scars, and areas near steep terrain. * ADDITIONAL DETAILS... - Deeper monsoonal moisture combined with daytime heating will produce scattered thunderstorms Monday afternoon and evening. Slower moving storms could redevelop over similar areas, increasing the risk for heavy rainfall capable of producing flash flooding. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Sunday, July 19, 2026

Weather Forecast

Sunny
77.1°F
52.8°F
64°F
40%
0 in
2%
0%
10.1 mph
9.9


Air Quality

AQI: 1 - Good
PM2.5: 6.18 μg/m3
PM10: 9.97 μg/m3
Carbon Monoxide: 95.54 μg/m3
Nitrogen Dioxide: 1.37 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 97.92 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:05 PM
Sunset: 8:18 PM
Daylight: 14 hrs 27 mins
Moonrise: 11:50 AM
Moon Transit: 5:41 PM
Moonset: 11:23 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

12:45 AM - 3:15 AM
5:11 PM - 7:41 PM

Minor Periods

12:00 AM - 12:00 AM
11:20 AM - 12:50 AM

Action Rating: 2 out of 5

Monday, July 20, 2026

Weather Forecast

Sunny
76.1°F
52.9°F
64°F
39%
0 in
17%
0%
10.1 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 4.7 μg/m3
PM10: 6.7 μg/m3
Carbon Monoxide: 95.75 μg/m3
Nitrogen Dioxide: 1.42 μg/m3
Sulphur Dioxide: 0.55 μg/m3
Ozone: 93.17 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:05 PM
Sunset: 8:18 PM
Daylight: 14 hrs 25 mins
Moonrise: 12:53 AM
Moon Transit: 6:24 PM
Moonset: 12:23 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

1:28 AM - 3:58 AM
5:54 PM - 8:24 PM

Minor Periods

12:23 AM - 1:53 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, July 21, 2026

Weather Forecast

Partly Cloudy
75°F
56.9°F
64.5°F
43%
0.03 in
36%
0%
11.2 mph
10.5


Air Quality

AQI: 1 - Good
PM2.5: 3.69 μg/m3
PM10: 4.83 μg/m3
Carbon Monoxide: 95.25 μg/m3
Nitrogen Dioxide: 1.65 μg/m3
Sulphur Dioxide: 0.47 μg/m3
Ozone: 78.13 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:05 PM
Sunset: 8:17 PM
Daylight: 14 hrs 24 mins
Moonrise: 1:56 PM
Moon Transit: 7:08 PM
Moonset: 12:48 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

2:12 AM - 4:42 AM
6:38 PM - 9:08 PM

Minor Periods

1:26 PM - 2:56 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, July 22, 2026

Weather Forecast

Sunny
77.6°F
53.6°F
65.3°F
45%
0 in
2%
0%
12.8 mph
11.6


Air Quality

AQI: 1 - Good
PM2.5: 2.81 μg/m3
PM10: 3.37 μg/m3
Carbon Monoxide: 97.71 μg/m3
Nitrogen Dioxide: 2.13 μg/m3
Sulphur Dioxide: 0.41 μg/m3
Ozone: 67.88 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:05 PM
Sunset: 8:16 PM
Daylight: 14 hrs 22 mins
Moonrise: 2:58 PM
Moon Transit: 7:54 PM
Moonset: 12:15 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

2:56 AM - 5:26 AM
7:24 PM - 9:54 PM

Minor Periods

2:28 PM - 3:58 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Thursday, July 23, 2026

Weather Forecast

Sunny
80.7°F
55.1°F
67.1°F
39%
0 in
1%
0%
13 mph
12.7


Air Quality

AQI: 1 - Good
PM2.5: 3.67 μg/m3
PM10: 4.25 μg/m3
Carbon Monoxide: 108.5 μg/m3
Nitrogen Dioxide: 4.02 μg/m3
Sulphur Dioxide: 0.52 μg/m3
Ozone: 47.83 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:05 PM
Sunset: 8:15 PM
Daylight: 14 hrs 21 mins
Moonrise: 4:00 PM
Moon Transit: 8:42 PM
Moonset: 12:46 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

3:43 AM - 6:13 AM
8:12 PM - 10:42 PM

Minor Periods

3:30 PM - 5:00 PM
12:16 AM - 1:46 AM

Action Rating: 4 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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