Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

48.9°F

Measurement Time: Friday, November 21, 2025, 2:30 PM PST

Temperature Locations

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Local Points of Interest

Stanislaus National Forest; Mather, CA; Harden Flat, CA

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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 / 760 meters

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 (50.0 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 (63.0 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

39.9°F
Clear
Conditions: Clear
Humidity: 100%
Feels Like: 35.2°F
Wind: ENE 6.7 mph
Wind Gusts: 14.1 mph
Pressure: 30.1 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 8 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Fri
H: 58°F
L: 39°F
Sunny
Sat
H: 60°F
L: 31°F
Sunny
Sun
H: 59°F
L: 30°F
Sunny
Mon
H: 59°F
L: 32°F
Sunny
Tue
H: 58°F
L: 30°F

Air Quality

AQI: 1 - Good
PM2.5: 1.25 μg/m3
PM10: 1.25 μg/m3
Carbon Monoxide: 126.85 μg/m3
Nitrogen Dioxide: 3.05 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 65 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 11:45 AM
Sunset: 4:44 PM
Daylight: 9 hrs 57 mins
Moonrise: 8:25 AM
Moon Transit: 12:57 AM
Moonset: 5:28 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

8:44 PM - 11:14 PM
12:27 AM - 2:57 PM

Minor Periods

4:58 PM - 6:28 PM
7:55 AM - 9:25 AM

Action Rating: 4 out of 5

Dense Fog Advisory issued November 21 at 1:09PM PST until November 22 at 11:00AM PST by NWS Hanford CA

Effective: Fri November 21, 2025, 1:09 PM
Expires: Fri November 21, 2025, 10:00 PM

* WHAT...Visibility one quarter mile to as low as 200 feet in dense fog. * WHERE...San Joaquin Valley, mainly Merced County southward to northern portions of Kern County. * WHEN...From midnight tonight to 11 AM PST Saturday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Highways impacted include, but are not limited to, Interstate 5, as well as Highways 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 21 at 4:37PM PST until November 22 at 11:00AM PST by NWS Hanford CA

Effective: Fri November 21, 2025, 4:37 PM
Expires: Sat November 22, 2025, 1:00 AM

* WHAT...Visibility one quarter mile to as low as 200 feet in dense fog. * WHERE...A portion of central California. * WHEN...From midnight tonight to 11 AM PST Saturday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Highways impacted include, but are not limited to, Interstate 5, as well as Highways 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.
Friday, November 21, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 47.2°F
Average Humidity: 79%
Chance of Rain: 0%
Wind: 6.9 mph
UV Index: 0.6

Air Quality

AQI: 1 - Good
PM2.5: 6.19 μg/m3
PM10: 6.59 μg/m3
Carbon Monoxide: 166.17 μg/m3
Nitrogen Dioxide: 5.6 μg/m3
Sulphur Dioxide: 1.82 μg/m3
Ozone: 56.68 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 11:45 AM
Sunset: 4:44 PM
Daylight: 9 hrs 57 mins
Moonrise: 8:25 AM
Moon Transit: 12:57 AM
Moonset: 5:28 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

8:44 PM - 11:14 PM
12:27 AM - 2:57 PM

Minor Periods

4:58 PM - 6:28 PM
7:55 AM - 9:25 AM

Action Rating: 4 out of 5

Saturday, November 22, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 46.3°F
Average Humidity: 59%
Chance of Rain: 0%
Wind: 7.4 mph
UV Index: 0.6

Air Quality

AQI: 1 - Good
PM2.5: 5.23 μg/m3
PM10: 5.5 μg/m3
Carbon Monoxide: 143.05 μg/m3
Nitrogen Dioxide: 5.83 μg/m3
Sulphur Dioxide: 1.76 μg/m3
Ozone: 63.16 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 11:46 AM
Sunset: 4:44 PM
Daylight: 9 hrs 56 mins
Moonrise: 9:19 AM
Moon Transit: 1:48 PM
Moonset: 6:19 PM
Moon Phase: New
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:18 PM - 3:48 PM

Minor Periods

5:49 PM - 7:19 PM
8:49 AM - 10:19 AM

Action Rating: 3 out of 5

Sunday, November 23, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 42.7°F
Average Humidity: 58%
Chance of Rain: 0%
Wind: 6.9 mph
UV Index: 0.6

Air Quality

AQI: 1 - Good
PM2.5: 5.3 μg/m3
PM10: 5.53 μg/m3
Carbon Monoxide: 150.69 μg/m3
Nitrogen Dioxide: 5.43 μg/m3
Sulphur Dioxide: 1.68 μg/m3
Ozone: 62 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 11:46 AM
Sunset: 4:43 PM
Daylight: 9 hrs 54 mins
Moonrise: 10:08 AM
Moon Transit: 2:40 PM
Moonset: 7:16 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:10 PM - 4:40 PM

Minor Periods

6:46 PM - 8:16 PM
9:38 AM - 11:08 AM

Action Rating: 3 out of 5

Monday, November 24, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 42.1°F
Average Humidity: 43%
Chance of Rain: 0%
Wind: 7.4 mph
UV Index: 0.5

Air Quality

AQI: 1 - Good
PM2.5: 7.21 μg/m3
PM10: 7.69 μg/m3
Carbon Monoxide: 147.21 μg/m3
Nitrogen Dioxide: 6.73 μg/m3
Sulphur Dioxide: 2.13 μg/m3
Ozone: 56.32 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 11:46 AM
Sunset: 4:43 PM
Daylight: 9 hrs 53 mins
Moonrise: 10:51 AM
Moon Transit: 3:31 PM
Moonset: 8:18 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:01 PM - 5:31 PM

Minor Periods

7:48 PM - 9:18 PM
10:21 AM - 11:51 AM

Action Rating: 2 out of 5

Tuesday, November 25, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 39.9°F
Average Humidity: 52%
Chance of Rain: 0%
Wind: 6 mph
UV Index: 0.5

Air Quality

AQI: 1 - Good
PM2.5: 8.1 μg/m3
PM10: 10.05 μg/m3
Carbon Monoxide: 191.47 μg/m3
Nitrogen Dioxide: 11.1 μg/m3
Sulphur Dioxide: 2.23 μg/m3
Ozone: 41.62 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 11:46 AM
Sunset: 4:43 PM
Daylight: 9 hrs 51 mins
Moonrise: 11:26 AM
Moon Transit: 4:20 PM
Moonset: 9:22 PM
Moon Phase: Waxing Crescent
Moon Illumination: 25.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:50 PM - 6:20 PM

Minor Periods

8:52 PM - 10:22 PM
10:56 AM - 12:26 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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