Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

61.5°F

Measurement Time: Saturday, May 30, 2026, 9:00 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

77.2°F
Sunny
Sunny
76.9°F
76.9°F
31%
W 9.8 mph
11.3 mph
77.2°F
45.2°F
0 in
0%
6 mi
1015 mbar
4.9

Five Day Weather Forecast

Sunny
Sat
H: 78°F
L: 48°F
Sunny
Sun
H: 80°F
L: 47°F
Sunny
Mon
H: 84°F
L: 49°F
Cloudy
Tue
H: 85°F
L: 55°F
Sunny
Wed
H: 85°F
L: 55°F

Air Quality

AQI: 1 - Good
PM2.5: 6.35 μg/m3
PM10: 14.85 μg/m3
Carbon Monoxide: 123.85 μg/m3
Nitrogen Dioxide: 1.15 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 102 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 12:57 AM
Sunset: 8:15 PM
Daylight: 14 hrs 36 mins
Moonrise: 8:15 PM
Moon Transit: 12:03 AM
Moonset: 4:47 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:49 AM - 10:19 AM

Minor Periods

7:45 PM - 9:15 PM
4:17 AM - 5:47 AM

Action Rating: 4 out of 5

Saturday, May 30, 2026

Weather Forecast

Sunny
78.3°F
48°F
62.6°F
53%
0 in
0%
0%
10.5 mph
9.3


Air Quality

AQI: 1 - Good
PM2.5: 5.72 μg/m3
PM10: 10.71 μg/m3
Carbon Monoxide: 129.81 μg/m3
Nitrogen Dioxide: 4.39 μg/m3
Sulphur Dioxide: 1.28 μg/m3
Ozone: 67.17 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 12:57 AM
Sunset: 8:15 PM
Daylight: 14 hrs 36 mins
Moonrise: 8:15 PM
Moon Transit: 12:03 AM
Moonset: 4:47 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:49 AM - 10:19 AM

Minor Periods

7:45 PM - 9:15 PM
4:17 AM - 5:47 AM

Action Rating: 4 out of 5

Sunday, May 31, 2026

Weather Forecast

Sunny
80.1°F
46.6°F
64.1°F
41%
0 in
0%
0%
9.4 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 6.7 μg/m3
PM10: 11.49 μg/m3
Carbon Monoxide: 117.94 μg/m3
Nitrogen Dioxide: 4.28 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 72.04 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 12:57 AM
Sunset: 8:16 PM
Daylight: 14 hrs 37 mins
Moonrise: 9:12 PM
Moon Transit: 12:52 AM
Moonset: 5:27 AM
Moon Phase: Full
Moon Illumination: 99.6%

Best Times for Fishing or Hunting

Major Periods

12:22 AM - 2:52 AM
8:39 AM - 11:09 AM

Minor Periods

8:42 PM - 10:12 PM
4:57 AM - 6:27 AM

Action Rating: 4 out of 5

Monday, June 1, 2026

Weather Forecast

Sunny
83.6°F
49.3°F
66.5°F
28%
0 in
0%
0%
9.2 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 4.9 μg/m3
PM10: 9.38 μg/m3
Carbon Monoxide: 119.66 μg/m3
Nitrogen Dioxide: 3.62 μg/m3
Sulphur Dioxide: 0.45 μg/m3
Ozone: 80.79 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 12:57 AM
Sunset: 8:17 PM
Daylight: 14 hrs 38 mins
Moonrise: 10:03 PM
Moon Transit: 1:43 AM
Moonset: 6:14 AM
Moon Phase: Full
Moon Illumination: 96.8%

Best Times for Fishing or Hunting

Major Periods

1:13 AM - 3:43 AM
9:30 AM - 12:00 AM

Minor Periods

9:33 PM - 11:03 PM
5:44 AM - 7:14 AM

Action Rating: 4 out of 5

Tuesday, June 2, 2026

Weather Forecast

Cloudy
85.1°F
55.2°F
69.1°F
28%
0 in
0%
0%
9.6 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 6.09 μg/m3
PM10: 12.89 μg/m3
Carbon Monoxide: 130.2 μg/m3
Nitrogen Dioxide: 3.61 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 88.88 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 12:57 AM
Sunset: 8:17 PM
Daylight: 14 hrs 39 mins
Moonrise: 10:48 PM
Moon Transit: 2:34 AM
Moonset: 7:08 AM
Moon Phase: Full
Moon Illumination: 91.7%

Best Times for Fishing or Hunting

Major Periods

2:04 AM - 4:34 AM
10:22 AM - 12:52 AM

Minor Periods

10:18 PM - 11:48 PM
6:38 AM - 8:08 AM

Action Rating: 3 out of 5

Wednesday, June 3, 2026

Weather Forecast

Sunny
84.8°F
54.6°F
68.8°F
29%
0 in
0%
0%
9.6 mph
10.7


Air Quality

AQI: 1 - Good
PM2.5: 4.62 μg/m3
PM10: 7.57 μg/m3
Carbon Monoxide: 151.67 μg/m3
Nitrogen Dioxide: 7.35 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 39 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 12:58 AM
Sunset: 8:18 PM
Daylight: 14 hrs 40 mins
Moonrise: 11:26 PM
Moon Transit: 3:25 AM
Moonset: 8:06 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.4%

Best Times for Fishing or Hunting

Major Periods

2:55 AM - 5:25 AM
11:12 AM - 1:42 PM

Minor Periods

12:00 AM - 12:00 AM
7:36 AM - 9:06 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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