Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

58.8°F

Measurement Time: Sunday, May 24, 2026, 11:15 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

60.8°F
Sunny
Sunny
60.8°F
60.8°F
55%
ENE 5.1 mph
10.8 mph
60.8°F
42.4°F
0 in
0%
6 mi
1013 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 80°F
L: 50°F
Patchy rain nearby
Tue
H: 60°F
L: 39°F
Patchy rain nearby
Wed
H: 57°F
L: 36°F
Patchy rain nearby
Thu
H: 64°F
L: 38°F
Sunny
Fri
H: 74°F
L: 40°F

Air Quality

AQI: 1 - Good
PM2.5: 10.15 μg/m3
PM10: 24.85 μg/m3
Carbon Monoxide: 121.85 μg/m3
Nitrogen Dioxide: 1.75 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 109 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:56 AM
Sunset: 8:12 PM
Daylight: 14 hrs 29 mins
Moonrise: 3:09 PM
Moon Transit: 9:06 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
8:36 PM - 11:06 PM

Minor Periods

2:39 PM - 4:09 PM
2:02 AM - 3:32 AM

Action Rating: 3 out of 5

Monday, May 25, 2026

Weather Forecast

Sunny
79.5°F
49.8°F
66.4°F
46%
0 in
0%
0%
10.3 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 7.73 μg/m3
PM10: 17.85 μg/m3
Carbon Monoxide: 124.25 μg/m3
Nitrogen Dioxide: 4.55 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 77.4 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:56 AM
Sunset: 8:12 PM
Daylight: 14 hrs 29 mins
Moonrise: 3:09 PM
Moon Transit: 9:06 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
8:36 PM - 11:06 PM

Minor Periods

2:39 PM - 4:09 PM
2:02 AM - 3:32 AM

Action Rating: 3 out of 5

Tuesday, May 26, 2026

Weather Forecast

Patchy rain nearby
59.7°F
39.4°F
52.7°F
56%
0.01 in
89%
0%
7.8 mph
5.6


Air Quality

AQI: 1 - Good
PM2.5: 9.54 μg/m3
PM10: 24.43 μg/m3
Carbon Monoxide: 121.33 μg/m3
Nitrogen Dioxide: 4.27 μg/m3
Sulphur Dioxide: 1.66 μg/m3
Ozone: 80.28 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:56 AM
Sunset: 8:12 PM
Daylight: 14 hrs 31 mins
Moonrise: 4:10 PM
Moon Transit: 9:48 PM
Moonset: 2:55 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.9%

Best Times for Fishing or Hunting

Major Periods

4:50 AM - 7:20 AM
9:18 PM - 11:48 PM

Minor Periods

3:40 PM - 5:10 PM
2:25 AM - 3:55 AM

Action Rating: 2 out of 5

Wednesday, May 27, 2026

Weather Forecast

Patchy rain nearby
56.9°F
36°F
48.5°F
65%
0.14 in
89%
0%
7.2 mph
4.8


Air Quality

AQI: 1 - Good
PM2.5: 5.39 μg/m3
PM10: 14.41 μg/m3
Carbon Monoxide: 116.05 μg/m3
Nitrogen Dioxide: 3.93 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 70.48 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 12:57 AM
Sunset: 8:13 PM
Daylight: 14 hrs 32 mins
Moonrise: 5:11 PM
Moon Transit: 10:31 PM
Moonset: 3:18 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.7%

Best Times for Fishing or Hunting

Major Periods

5:32 AM - 8:02 AM
12:00 AM - 12:00 AM

Minor Periods

4:41 PM - 6:11 PM
2:48 AM - 4:18 AM

Action Rating: 3 out of 5

Thursday, May 28, 2026

Weather Forecast

Patchy rain nearby
63.8°F
38.4°F
51.3°F
58%
0.03 in
83%
0%
8.3 mph
5.4


Air Quality

AQI: 1 - Good
PM2.5: 2.95 μg/m3
PM10: 7.1 μg/m3
Carbon Monoxide: 114.88 μg/m3
Nitrogen Dioxide: 3.38 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 65.8 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 12:57 AM
Sunset: 8:14 PM
Daylight: 14 hrs 33 mins
Moonrise: 6:13 PM
Moon Transit: 11:15 PM
Moonset: 3:44 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.7%

Best Times for Fishing or Hunting

Major Periods

6:16 AM - 8:46 AM
12:00 AM - 12:00 AM

Minor Periods

5:43 PM - 7:13 PM
3:14 AM - 4:44 AM

Action Rating: 2 out of 5

Friday, May 29, 2026

Weather Forecast

Sunny
73.5°F
39.5°F
52.4°F
54%
0 in
0%
0%
9.8 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.33 μg/m3
PM10: 5.93 μg/m3
Carbon Monoxide: 130.67 μg/m3
Nitrogen Dioxide: 6.31 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 49.23 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 12:57 AM
Sunset: 8:15 PM
Daylight: 14 hrs 34 mins
Moonrise: 7:14 PM
Moon Transit: 12:00 AM
Moonset: 4:13 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:01 AM - 9:31 AM

Minor Periods

6:44 PM - 8:14 PM
3:43 AM - 5:13 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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