Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

66.2°F

Measurement Time: Monday, July 13, 2026, 12:45 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

83.3°F
Sunny
Sunny
75°F
82.2°F
35%
SW 2.2 mph
2.3 mph
83.3°F
52.7°F
0 in
0%
6 mi
1014 mbar
0.7

Five Day Weather Forecast

Sunny
Mon
H: 97°F
L: 65°F
Sunny
Tue
H: 96°F
L: 62°F
Sunny
Wed
H: 97°F
L: 65°F
Sunny
Thu
H: 99°F
L: 64°F
Sunny
Fri
H: 96°F
L: 63°F

Air Quality

AQI: 1 - Good
PM2.5: 4.9 μg/m3
PM10: 6.8 μg/m3
Carbon Monoxide: 99 μg/m3
Nitrogen Dioxide: 2.2 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:05 PM
Sunset: 8:23 PM
Daylight: 14 hrs 35 mins
Moonrise: 4:37 AM
Moon Transit: 12:31 AM
Moonset: 8:19 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

8:23 PM - 10:53 PM
12:01 AM - 2:31 PM

Minor Periods

7:49 PM - 9:19 PM
4:07 AM - 5:37 AM

Action Rating: 5 out of 5

Monday, July 13, 2026

Weather Forecast

Sunny
96.8°F
65.2°F
82.2°F
34%
0 in
17%
0%
9.2 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 5.52 μg/m3
PM10: 7.37 μg/m3
Carbon Monoxide: 100.92 μg/m3
Nitrogen Dioxide: 3.56 μg/m3
Sulphur Dioxide: 0.42 μg/m3
Ozone: 70.58 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:05 PM
Sunset: 8:23 PM
Daylight: 14 hrs 35 mins
Moonrise: 4:37 AM
Moon Transit: 12:31 AM
Moonset: 8:19 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

8:23 PM - 10:53 PM
12:01 AM - 2:31 PM

Minor Periods

7:49 PM - 9:19 PM
4:07 AM - 5:37 AM

Action Rating: 5 out of 5

Tuesday, July 14, 2026

Weather Forecast

Sunny
95.6°F
62°F
78.8°F
34%
0 in
17%
0%
13.6 mph
10.7


Air Quality

AQI: 1 - Good
PM2.5: 5.92 μg/m3
PM10: 8.53 μg/m3
Carbon Monoxide: 101.42 μg/m3
Nitrogen Dioxide: 3.39 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 76.92 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:05 PM
Sunset: 8:22 PM
Daylight: 14 hrs 33 mins
Moonrise: 5:54 AM
Moon Transit: 1:34 PM
Moonset: 9:04 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

9:25 PM - 11:55 PM
1:04 PM - 3:34 PM

Minor Periods

8:34 PM - 10:04 PM
5:24 AM - 6:54 AM

Action Rating: 5 out of 5

Wednesday, July 15, 2026

Weather Forecast

Sunny
97.4°F
64.6°F
80°F
28%
0 in
1%
0%
11.4 mph
11.1


Air Quality

AQI: 1 - Good
PM2.5: 4.5 μg/m3
PM10: 5.46 μg/m3
Carbon Monoxide: 97.25 μg/m3
Nitrogen Dioxide: 3.58 μg/m3
Sulphur Dioxide: 0.57 μg/m3
Ozone: 73.33 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:05 PM
Sunset: 8:22 PM
Daylight: 14 hrs 32 mins
Moonrise: 7:12 AM
Moon Transit: 2:32 PM
Moonset: 9:40 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:02 PM - 4:32 PM

Minor Periods

9:10 PM - 10:40 PM
6:42 AM - 8:12 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Sunny
98.5°F
64°F
80.6°F
25%
0 in
1%
0%
10.1 mph
11.1


Air Quality

AQI: 1 - Good
PM2.5: 4.6 μg/m3
PM10: 5.44 μg/m3
Carbon Monoxide: 98.01 μg/m3
Nitrogen Dioxide: 3.92 μg/m3
Sulphur Dioxide: 0.61 μg/m3
Ozone: 76.13 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:05 PM
Sunset: 8:21 PM
Daylight: 14 hrs 31 mins
Moonrise: 8:28 AM
Moon Transit: 3:25 PM
Moonset: 10:10 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:55 PM - 5:25 PM

Minor Periods

9:40 PM - 11:10 PM
7:58 AM - 9:28 AM

Action Rating: 3 out of 5

Friday, July 17, 2026

Weather Forecast

Sunny
96.3°F
62.6°F
78°F
25%
0 in
1%
0%
10.5 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 4.45 μg/m3
PM10: 4.93 μg/m3
Carbon Monoxide: 120 μg/m3
Nitrogen Dioxide: 8.3 μg/m3
Sulphur Dioxide: 0.35 μg/m3
Ozone: 39.83 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:06 PM
Sunset: 8:21 PM
Daylight: 14 hrs 29 mins
Moonrise: 9:39 AM
Moon Transit: 4:13 PM
Moonset: 10:37 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:43 PM - 6:13 PM

Minor Periods

10:07 PM - 11:37 PM
9:09 AM - 10:39 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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