Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

53.1°F

Measurement Time: Thursday, May 14, 2026, 12:45 PM 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

48.8°F
Sunny
Sunny
48.7°F
48.8°F
65%
WSW 2.2 mph
3.8 mph
48.7°F
35.6°F
0 in
4%
6 mi
1017 mbar
0

Five Day Weather Forecast

Sunny
Thu
H: 64°F
L: 43°F
Sunny
Fri
H: 61°F
L: 41°F
Sunny
Sat
H: 56°F
L: 38°F
Sunny
Sun
H: 54°F
L: 36°F
Sunny
Mon
H: 58°F
L: 34°F

Air Quality

AQI: 1 - Good
PM2.5: 5.08 μg/m3
PM10: 7.88 μg/m3
Carbon Monoxide: 130.68 μg/m3
Nitrogen Dioxide: 2.78 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 107 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 12:55 AM
Sunset: 8:01 PM
Daylight: 14 hrs 12 mins
Moonrise: 4:05 AM
Moon Transit: 10:54 AM
Moonset: 5:57 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

6:45 PM - 9:15 PM
10:24 AM - 12:54 AM

Minor Periods

5:27 PM - 6:57 PM
3:35 AM - 5:05 AM

Action Rating: 2 out of 5

Fire Weather Watch issued May 14 at 10:24AM PDT until May 18 at 8:00PM PDT by NWS Sacramento CA

Effective: Thu May 14, 2026, 10:24 AM
Expires: Fri May 15, 2026, 5:00 PM

The National Weather Service in Sacramento has issued a Fire Weather Watch for gusty winds and low humidity, which is in effect from late Friday night through Monday evening. * Winds...North winds 15 to 25 mph. Gusts 35 to 45 mph, locally up to 50 mph around the Delta. * Humidity...Daytime minimum humidities of 9 to 15%. * Highest Threat...Along the Interstate 5 corridor in the Sacramento Valley. Strongest winds are expected Sunday into Monday. * Impacts...The combination of gusty winds and low humidity can cause fire to rapidly grow in size and intensity. Outdoor burning is not recommended

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued May 14 at 10:21AM PDT until May 18 at 8:00PM PDT by NWS Hanford CA

Effective: Thu May 14, 2026, 10:21 AM
Expires: Thu May 14, 2026, 6:30 PM

The National Weather Service in Hanford has issued a Fire Weather Watch, which is in effect from early Saturday morning through Monday evening. * AFFECTED AREA...Fire weather zone 579 West Side Hills. Fire weather zone 580 San Joaquin Valley. * WIND...GUSTING TO 35 MPH SATURDAY AND SUNDAY * HUMIDITY...20% OR LESS SATURDAY AND SUNDAY THEN 15% OR LESS MONDAY * HIGHEST THREAT...FAST-MOVING GRASS FIRES * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
Thursday, May 14, 2026

Weather Forecast

Sunny
64.4°F
42.9°F
52.4°F
42%
0 in
0%
0%
11.9 mph
10.6


Air Quality

AQI: 1 - Good
PM2.5: 3.83 μg/m3
PM10: 6.25 μg/m3
Carbon Monoxide: 124.12 μg/m3
Nitrogen Dioxide: 1.97 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 100.2 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 12:55 AM
Sunset: 8:01 PM
Daylight: 14 hrs 12 mins
Moonrise: 4:05 AM
Moon Transit: 10:54 AM
Moonset: 5:57 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

6:45 PM - 9:15 PM
10:24 AM - 12:54 AM

Minor Periods

5:27 PM - 6:57 PM
3:35 AM - 5:05 AM

Action Rating: 2 out of 5

Friday, May 15, 2026

Weather Forecast

Sunny
61.4°F
40.8°F
50.2°F
46%
0 in
0%
0%
12.3 mph
10.1


Air Quality

AQI: 1 - Good
PM2.5: 4.97 μg/m3
PM10: 7.48 μg/m3
Carbon Monoxide: 131.36 μg/m3
Nitrogen Dioxide: 1.87 μg/m3
Sulphur Dioxide: 1.01 μg/m3
Ozone: 111.32 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 12:55 AM
Sunset: 8:02 PM
Daylight: 14 hrs 14 mins
Moonrise: 4:37 AM
Moon Transit: 11:49 AM
Moonset: 7:14 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

7:41 PM - 10:11 PM
11:19 AM - 1:49 PM

Minor Periods

6:44 PM - 8:14 PM
4:07 AM - 5:37 AM

Action Rating: 6 out of 5

Saturday, May 16, 2026

Weather Forecast

Sunny
56°F
37.7°F
46°F
51%
0 in
0%
0%
12.5 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 4.45 μg/m3
PM10: 6.69 μg/m3
Carbon Monoxide: 128.99 μg/m3
Nitrogen Dioxide: 1.67 μg/m3
Sulphur Dioxide: 0.99 μg/m3
Ozone: 112.76 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 12:55 AM
Sunset: 8:03 PM
Daylight: 14 hrs 16 mins
Moonrise: 5:15 AM
Moon Transit: 12:49 AM
Moonset: 8:34 PM
Moon Phase: New
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

8:43 PM - 11:13 PM
12:19 AM - 2:49 PM

Minor Periods

8:04 PM - 9:34 PM
4:45 AM - 6:15 AM

Action Rating: 5 out of 5

Sunday, May 17, 2026

Weather Forecast

Sunny
54.2°F
35.6°F
45°F
50%
0 in
0%
0%
11.9 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 3.51 μg/m3
PM10: 5.9 μg/m3
Carbon Monoxide: 135.39 μg/m3
Nitrogen Dioxide: 1.68 μg/m3
Sulphur Dioxide: 1.01 μg/m3
Ozone: 99.36 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 12:55 AM
Sunset: 8:04 PM
Daylight: 14 hrs 17 mins
Moonrise: 6:04 AM
Moon Transit: 1:54 PM
Moonset: 9:51 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:24 PM - 3:54 PM

Minor Periods

9:21 PM - 10:51 PM
5:34 AM - 7:04 AM

Action Rating: 4 out of 5

Monday, May 18, 2026

Weather Forecast

Sunny
57.6°F
33.9°F
45.3°F
43%
0 in
0%
0%
11.6 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 2.77 μg/m3
PM10: 4.24 μg/m3
Carbon Monoxide: 132.91 μg/m3
Nitrogen Dioxide: 2.25 μg/m3
Sulphur Dioxide: 1.16 μg/m3
Ozone: 83.69 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 12:55 AM
Sunset: 8:05 PM
Daylight: 14 hrs 19 mins
Moonrise: 7:03 AM
Moon Transit: 3:01 PM
Moonset: 10:59 PM
Moon Phase: New
Moon Illumination: 2.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:31 PM - 5:01 PM

Minor Periods

10:29 PM - 11:59 PM
6:33 AM - 8:03 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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