Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

59.5°F

Measurement Time: Tuesday, September 1, 2026, 1:30 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

58°F
Sunny
Sunny
55%
SSW 5 mph
42°F

Weather Forecast

Sunny then Patchy Smoke
Today
77°F - Sunny then Patchy Smoke
Patchy Smoke then Mostly Clear
Tonight
48°F - Patchy Smoke then Mostly Clear
Sunny
Wednesday
76°F - Sunny
Mostly Clear
Wednesday Night
49°F - Mostly Clear
Sunny
Thursday
77°F - Sunny
Mostly Clear
Thursday Night
50°F - Mostly Clear
Sunny
Friday
77°F - Sunny
Mostly Clear
Friday Night
51°F - Mostly Clear
Sunny
Saturday
79°F - Sunny
Slight Chance Light Rain
Saturday Night
53°F - Slight Chance Light Rain
Slight Chance Light Rain
Sunday
80°F - Slight Chance Light Rain
Slight Chance Light Rain
Sunday Night
55°F - Slight Chance Light Rain
Slight Chance Light Rain then Mostly Sunny
Labor Day
84°F - Slight Chance Light Rain then Mostly Sunny
Partly Cloudy
Monday Night
59°F - Partly Cloudy

Astronomical

Sunrise: 6:30 AM
Sun Transit: 1:00 PM
Sunset: 7:29 PM
Daylight: 12 hrs 58 mins
Moonrise: 9:40 PM
Moon Transit: 4:09 AM
Moonset: 11:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:39 AM - 6:09 AM
11:56 AM - 2:26 PM

Minor Periods

9:10 PM - 10:40 PM
10:52 AM - 12:22 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 1:00 PM
Sunset: 7:29 PM
Daylight: 12 hrs 58 mins
Moonrise: 9:40 PM
Moon Transit: 4:09 AM
Moonset: 11:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:39 AM - 6:09 AM
11:56 AM - 2:26 PM

Minor Periods

9:10 PM - 10:40 PM
10:52 AM - 12:22 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 1:00 PM
Sunset: 7:29 PM
Daylight: 12 hrs 58 mins
Moonrise: 9:40 PM
Moon Transit: 4:09 AM
Moonset: 11:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:39 AM - 6:09 AM
11:56 AM - 2:26 PM

Minor Periods

9:10 PM - 10:40 PM
10:52 AM - 12:22 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 1:00 PM
Sunset: 7:27 PM
Daylight: 12 hrs 56 mins
Moonrise: 10:19 PM
Moon Transit: 5:01 AM
Moonset: 12:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:31 AM - 7:01 AM
12:50 AM - 3:20 PM

Minor Periods

9:49 PM - 11:19 PM
12:04 AM - 1:34 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 1:00 PM
Sunset: 7:27 PM
Daylight: 12 hrs 56 mins
Moonrise: 10:19 PM
Moon Transit: 5:01 AM
Moonset: 12:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:31 AM - 7:01 AM
12:50 AM - 3:20 PM

Minor Periods

9:49 PM - 11:19 PM
12:04 AM - 1:34 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 1:00 PM
Sunset: 7:26 PM
Daylight: 12 hrs 54 mins
Moonrise: 11:06 PM
Moon Transit: 5:58 AM
Moonset: 1:47 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:28 AM - 7:58 AM
1:48 PM - 4:18 PM

Minor Periods

12:00 AM - 12:00 AM
1:17 PM - 2:47 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 1:00 PM
Sunset: 7:26 PM
Daylight: 12 hrs 54 mins
Moonrise: 11:06 PM
Moon Transit: 5:58 AM
Moonset: 1:47 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:28 AM - 7:58 AM
1:48 PM - 4:18 PM

Minor Periods

12:00 AM - 12:00 AM
1:17 PM - 2:47 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:58 AM
Sunset: 7:24 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:06 AM
Moon Transit: 7:00 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
2:50 PM - 5:20 PM

Minor Periods

2:26 PM - 3:56 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 12:58 AM
Sunset: 7:24 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:06 AM
Moon Transit: 7:00 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
2:50 PM - 5:20 PM

Minor Periods

2:26 PM - 3:56 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:58 AM
Sunset: 7:23 PM
Daylight: 12 hrs 49 mins
Moonrise: 12:05 AM
Moon Transit: 8:02 AM
Moonset: 3:57 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:32 AM - 10:02 AM
3:53 PM - 6:23 PM

Minor Periods

3:27 PM - 4:57 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:58 AM
Sunset: 7:23 PM
Daylight: 12 hrs 49 mins
Moonrise: 12:05 AM
Moon Transit: 8:02 AM
Moonset: 3:57 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:32 AM - 10:02 AM
3:53 PM - 6:23 PM

Minor Periods

3:27 PM - 4:57 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:58 AM
Sunset: 7:21 PM
Daylight: 12 hrs 47 mins
Moonrise: 1:12 AM
Moon Transit: 9:04 AM
Moonset: 4:49 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:34 AM - 11:04 AM
4:55 PM - 7:25 PM

Minor Periods

4:19 PM - 5:49 PM
12:42 AM - 2:12 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 12:58 AM
Sunset: 7:21 PM
Daylight: 12 hrs 47 mins
Moonrise: 1:12 AM
Moon Transit: 9:04 AM
Moonset: 4:49 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:34 AM - 11:04 AM
4:55 PM - 7:25 PM

Minor Periods

4:19 PM - 5:49 PM
12:42 AM - 2:12 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:57 AM
Sunset: 7:20 PM
Daylight: 12 hrs 44 mins
Moonrise: 2:26 AM
Moon Transit: 10:04 AM
Moonset: 5:31 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

5:53 PM - 8:23 PM
9:34 AM - 12:04 AM

Minor Periods

5:01 PM - 6:31 PM
1:56 AM - 3:26 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 12:57 AM
Sunset: 7:20 PM
Daylight: 12 hrs 44 mins
Moonrise: 2:26 AM
Moon Transit: 10:04 AM
Moonset: 5:31 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

5:53 PM - 8:23 PM
9:34 AM - 12:04 AM

Minor Periods

5:01 PM - 6:31 PM
1:56 AM - 3:26 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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