Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

39.9°F

Measurement Time: Wednesday, November 26, 2025, 7:30 AM PST

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

57.9°F
Sunny
Conditions: Sunny
Humidity: 67%
Feels Like: 58°F
Wind: W 4 mph
Wind Gusts: 5.1 mph
Pressure: 30.19 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0.9

Five Day Weather Forecast

Sunny
Wed
H: 56°F
L: 38°F
Partly Cloudy
Thu
H: 53°F
L: 42°F
Sunny
Fri
H: 46°F
L: 34°F
Patchy moderate snow
Sat
H: 39°F
L: 28°F
Partly Cloudy
Sun
H: 34°F
L: 21°F

Air Quality

AQI: 1 - Good
PM2.5: 1.98 μg/m3
PM10: 1.98 μg/m3
Carbon Monoxide: 100.68 μg/m3
Nitrogen Dioxide: 3.78 μg/m3
Sulphur Dioxide: 0.98 μg/m3
Ozone: 90 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 11:46 AM
Sunset: 4:41 PM
Daylight: 9 hrs 50 mins
Moonrise: 11:56 AM
Moon Transit: 5:06 PM
Moonset: 10:26 PM
Moon Phase: First Quarter
Moon Illumination: 35.3%

Best Times for Fishing or Hunting

Major Periods

12:08 AM - 2:38 AM
4:36 PM - 7:06 PM

Minor Periods

9:56 PM - 11:26 PM
11:26 AM - 12:56 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued November 26 at 12:48AM PST until November 26 at 11:00AM PST by NWS Sacramento CA

Effective: Wed November 26, 2025, 12:48 AM
Expires: Wed November 26, 2025, 11:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Carquinez Strait and Delta, Central Sacramento Valley, Northern San Joaquin Valley, and Southern Sacramento Valley. * WHEN...Until 11 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.


Dense Fog Advisory issued November 25 at 9:40PM PST until November 27 at 1:00PM PST by NWS Hanford CA

Effective: Tue November 25, 2025, 9:40 PM
Expires: Wed November 26, 2025, 8:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...A portion of central California. * WHEN...Until 1 PM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Highways impacted include, but are not limited to, Interstate 5, as well as California State Routes 99, 33, 41, 43, 46, 59, 152, 165, 168, 180, and 198.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.


Dense Fog Advisory issued November 26 at 7:43AM PST until November 27 at 1:00PM PST by NWS Hanford CA

Effective: Wed November 26, 2025, 7:43 AM
Expires: Wed November 26, 2025, 4:00 PM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...A portion of central California. * WHEN...Until 1 PM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Highways impacted include, but are not limited to, Interstate 5, as well as California State Routes 99, 33, 41, 43, 46, 59, 152, 165, 168, 180, and 198.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Wednesday, November 26, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 45.4°F
Average Humidity: 33%
Chance of Rain: 0%
Wind: 8.1 mph
UV Index: 0.6

Air Quality

AQI: 1 - Good
PM2.5: 1.48 μg/m3
PM10: 1.69 μg/m3
Carbon Monoxide: 106.72 μg/m3
Nitrogen Dioxide: 2.11 μg/m3
Sulphur Dioxide: 1.61 μg/m3
Ozone: 99.48 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 11:46 AM
Sunset: 4:41 PM
Daylight: 9 hrs 50 mins
Moonrise: 11:56 AM
Moon Transit: 5:06 PM
Moonset: 10:26 PM
Moon Phase: First Quarter
Moon Illumination: 35.3%

Best Times for Fishing or Hunting

Major Periods

12:08 AM - 2:38 AM
4:36 PM - 7:06 PM

Minor Periods

9:56 PM - 11:26 PM
11:26 AM - 12:56 AM

Action Rating: 3 out of 5

Thursday, November 27, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 46°F
Average Humidity: 34%
Chance of Rain: 0%
Wind: 7.2 mph
UV Index: 0.5

Air Quality

AQI: 1 - Good
PM2.5: 1.91 μg/m3
PM10: 2.01 μg/m3
Carbon Monoxide: 105.4 μg/m3
Nitrogen Dioxide: 2.44 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 97.32 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 11:46 AM
Sunset: 4:41 PM
Daylight: 9 hrs 48 mins
Moonrise: 12:23 AM
Moon Transit: 5:52 PM
Moonset: 11:31 PM
Moon Phase: First Quarter
Moon Illumination: 46.5%

Best Times for Fishing or Hunting

Major Periods

12:55 AM - 3:25 AM
5:22 PM - 7:52 PM

Minor Periods

12:00 AM - 12:00 AM
11:53 AM - 1:23 PM

Action Rating: 2 out of 5

Friday, November 28, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 39.8°F
Average Humidity: 36%
Chance of Rain: 0%
Wind: 6.7 mph
UV Index: 0.5

Air Quality

AQI: 1 - Good
PM2.5: 1.86 μg/m3
PM10: 1.96 μg/m3
Carbon Monoxide: 106.92 μg/m3
Nitrogen Dioxide: 1.53 μg/m3
Sulphur Dioxide: 1.8 μg/m3
Ozone: 103.72 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 11:46 AM
Sunset: 4:40 PM
Daylight: 9 hrs 47 mins
Moonrise: 12:48 AM
Moon Transit: 6:37 PM
Moonset: 12:31 AM
Moon Phase: First Quarter
Moon Illumination: 57.8%

Best Times for Fishing or Hunting

Major Periods

1:40 AM - 4:10 AM
6:07 PM - 8:37 PM

Minor Periods

12:18 AM - 1:48 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, November 29, 2025

Weather Forecast

Conditions: Patchy moderate snow
Average Temperature: 33.7°F
Average Humidity: 65%
Chance of Rain: 89%
Wind: 7.6 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 2.39 μg/m3
PM10: 2.55 μg/m3
Carbon Monoxide: 114.6 μg/m3
Nitrogen Dioxide: 1.86 μg/m3
Sulphur Dioxide: 1.06 μg/m3
Ozone: 95.28 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 11:47 AM
Sunset: 4:40 PM
Daylight: 9 hrs 46 mins
Moonrise: 1:12 PM
Moon Transit: 6:12 PM
Moonset: 12:38 AM
Moon Phase: First Quarter
Moon Illumination: 68.7%

Best Times for Fishing or Hunting

Major Periods

2:26 AM - 4:56 AM
5:42 PM - 8:12 PM

Minor Periods

12:42 AM - 2:12 PM
12:08 AM - 1:38 AM

Action Rating: 2 out of 5

Sunday, November 30, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 26.9°F
Average Humidity: 65%
Chance of Rain: 0%
Wind: 11.9 mph
UV Index: 2

Air Quality

AQI: 1 - Good
PM2.5: 4.52 μg/m3
PM10: 4.86 μg/m3
Carbon Monoxide: 128.37 μg/m3
Nitrogen Dioxide: 2.32 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 98 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 11:47 AM
Sunset: 4:40 PM
Daylight: 9 hrs 45 mins
Moonrise: 1:38 PM
Moon Transit: 8:12 PM
Moonset: 1:47 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:42 PM - 10:12 PM

Minor Periods

1:08 PM - 2:38 PM
1:17 AM - 2:47 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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