Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

68.7°F

Measurement Time: Saturday, August 9, 2025, 8:15 PM PDT

Temperature Locations

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Local Points of Interest

Hetch Hetchy Reservoir; Yosemite National Park; White Wolf, CA

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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 / 1,171 meters

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 (37.0 mi)
Deadman Creek, Mammoth Lakes, CA (41.0 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

68.2°F
Partly cloudy
Conditions: Partly cloudy
Humidity: 53%
Feels Like: 68.2°F
Wind: ENE 6.3 mph
Wind Gusts: 13.2 mph
Pressure: 29.96 in
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Sun
H: 78°F
L: 58°F
Sunny
Mon
H: 78°F
L: 62°F
Sunny
Tue
H: 76°F
L: 62°F
Sunny
Wed
H: 77°F
L: 50°F
Sunny
Thu
H: 74°F
L: 46°F

Air Quality

PM2.5: 6.71 μg/m3
PM10: 9.23 μg/m3
Carbon Monoxide: 213.13 μg/m3
Nitrogen Dioxide: 1.18 μg/m3
Sulphur Dioxide: 2.01 μg/m3
Ozone: 116 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:03 PM
Sunset: 7:57 PM
Daylight: 13 hrs 47 mins
Moonrise: 8:59 PM
Moon Transit: 1:57 AM
Moonset: 7:32 AM
Moon Phase: Full
Moon Illumination: 95.5%

Best Times for Fishing or Hunting

Major Periods

1:27 AM - 3:57 AM
9:46 AM - 12:16 AM

Minor Periods

8:29 PM - 9:59 PM
7:02 AM - 8:32 AM

Action Rating: 3 out of 5

Heat Advisory issued August 9 at 10:45PM PDT until August 11 at 11:00PM PDT by NWS Hanford CA

Effective: Sat August 9, 2025, 10:45 PM
Expires: Sun August 10, 2025, 7:00 AM

* WHAT...High temperatures up to 105 expected. * WHERE...A portion of central California. * WHEN...Until 11 PM PDT Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.


Heat Advisory issued August 9 at 10:45PM PDT until August 11 at 11:00PM PDT by NWS Hanford CA

Effective: Sat August 9, 2025, 10:45 PM
Expires: Sun August 10, 2025, 7:00 AM

* WHAT...High temperatures up to 105 expected. * WHERE...A portion of central California. * WHEN...Until 11 PM PDT Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Sunday, August 10, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 67.9°F
Average Humidity: 31%
Chance of Rain: 0%
Wind: 14.3 mph
UV Index: 2.5

Air Quality

AQI: 1 - Good
PM2.5: 8.9 μg/m3
PM10: 9.73 μg/m3
Carbon Monoxide: 230.45 μg/m3
Nitrogen Dioxide: 3.05 μg/m3
Sulphur Dioxide: 2.19 μg/m3
Ozone: 116.28 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:03 PM
Sunset: 7:57 PM
Daylight: 13 hrs 47 mins
Moonrise: 8:59 PM
Moon Transit: 1:57 AM
Moonset: 7:32 AM
Moon Phase: Full
Moon Illumination: 95.5%

Best Times for Fishing or Hunting

Major Periods

1:27 AM - 3:57 AM
9:46 AM - 12:16 AM

Minor Periods

8:29 PM - 9:59 PM
7:02 AM - 8:32 AM

Action Rating: 3 out of 5

Monday, August 11, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 68.9°F
Average Humidity: 30%
Chance of Rain: 0%
Wind: 15 mph
UV Index: 2.3

Air Quality

AQI: 1 - Good
PM2.5: 9.37 μg/m3
PM10: 10.18 μg/m3
Carbon Monoxide: 219.71 μg/m3
Nitrogen Dioxide: 3.3 μg/m3
Sulphur Dioxide: 2 μg/m3
Ozone: 107.64 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 1:03 PM
Sunset: 7:56 PM
Daylight: 13 hrs 45 mins
Moonrise: 9:24 PM
Moon Transit: 2:45 AM
Moonset: 8:43 AM
Moon Phase: Waning Gibbous
Moon Illumination: 89.6%

Best Times for Fishing or Hunting

Major Periods

2:15 AM - 4:45 AM
12:00 AM - 12:00 AM

Minor Periods

8:54 PM - 10:24 PM
8:13 AM - 9:43 AM

Action Rating: 2 out of 5

Tuesday, August 12, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 68.5°F
Average Humidity: 30%
Chance of Rain: 0%
Wind: 13.9 mph
UV Index: 2.6

Air Quality

AQI: 1 - Good
PM2.5: 8.68 μg/m3
PM10: 9.27 μg/m3
Carbon Monoxide: 207.23 μg/m3
Nitrogen Dioxide: 2.82 μg/m3
Sulphur Dioxide: 1.81 μg/m3
Ozone: 120.52 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 1:03 PM
Sunset: 7:55 PM
Daylight: 13 hrs 43 mins
Moonrise: 9:49 PM
Moon Transit: 4:21 AM
Moonset: 9:52 AM
Moon Phase: Waning Gibbous
Moon Illumination: 81.8%

Best Times for Fishing or Hunting

Major Periods

3:51 AM - 6:21 AM
3:51 AM - 6:21 AM

Minor Periods

9:19 PM - 10:49 PM
9:22 AM - 10:52 AM

Action Rating: 4 out of 5

Wednesday, August 13, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 63°F
Average Humidity: 26%
Chance of Rain: 0%
Wind: 13.2 mph
UV Index: 2.8

Air Quality

AQI: 1 - Good
PM2.5: 10.02 μg/m3
PM10: 10.62 μg/m3
Carbon Monoxide: 227.46 μg/m3
Nitrogen Dioxide: 3.42 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 109.69 μg/m3

Astronomical

Sunrise: 6:13 AM
Sun Transit: 1:03 PM
Sunset: 7:54 PM
Daylight: 13 hrs 41 mins
Moonrise: 10:16 PM
Moon Transit: 4:20 AM
Moonset: 11:03 AM
Moon Phase: Waning Gibbous
Moon Illumination: 72.3%

Best Times for Fishing or Hunting

Major Periods

3:50 AM - 6:20 AM
12:09 AM - 2:39 PM

Minor Periods

9:46 PM - 11:16 PM
10:33 AM - 12:03 AM

Action Rating: 3 out of 5

Thursday, August 14, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 55.8°F
Average Humidity: 27%
Chance of Rain: 0%
Wind: 12.3 mph
UV Index: 0

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: 6:14 AM
Sun Transit: 1:03 PM
Sunset: 7:52 PM
Daylight: 13 hrs 39 mins
Moonrise: 10:47 PM
Moon Transit: 5:09 AM
Moonset: 12:16 AM
Moon Phase: Waning Gibbous
Moon Illumination: 61.6%

Best Times for Fishing or Hunting

Major Periods

4:39 AM - 7:09 AM
12:59 AM - 3:29 PM

Minor Periods

10:17 PM - 11:47 PM
11:46 AM - 1:16 PM

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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