Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

47.8°F

Measurement Time: Tuesday, February 3, 2026, 6:00 PM PST

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 NR HETCH HETCHY CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 3,484 feet

Nearest Address:
Hetch Hetchy Road
Groveland, CA 95321
Tuolumne County

GPS Coordinates: 37.93742147, -119.7982326

Nearby Water Temperatures

Cherry Creek, Groveland, CA (6.8 mi)
Tuolumne River, Groveland, CA (7.7 mi)
Tuolumne River, Groveland, CA (9.1 mi)
Tuolumne River, Groveland, CA (10.1 mi)
Merced River, Yosemite Valley, CA (19.3 mi)
Middle Fork San Joaquin River, Mammoth Lakes, CA (44.2 mi)
Deadman Creek, Mammoth Lakes, CA (48.6 mi)
Hot Creek, Mammoth Lakes, CA (55.1 mi)
Hot Creek, Mammoth Lakes, CA (55.6 mi)
Hot Creek, Mammoth Lakes, CA (56.7 mi)
San Joaquin River, Friant, CA (66 mi)
Trout Creek, South Lake Tahoe, CA (68.5 mi)
Upper Truckee River, South Lake Tahoe, CA (68.9 mi)
Walker Lake, Walker Lake, NV (78.6 mi)
General Creek, Tahoma, CA (78.9 mi)

Weather for Groveland, California

Current Weather

37°F

Conditions: Clear

Feels Like: 30.9°F

Heat Index: 37°F

Humidity: 12%

Wind: ENE 9.6 mph

Wind Gusts: 20.2 mph

Wind Chill: 30.9°F

Dew Point: -11.3°F

Precipitation: 0 in

Cloud Cover: 0%

Visibility: 9 mi

Air Pressure: 1026 mbar

UV Index: 0

Five Day Weather Forecast

Wed
H: 56°F
L: 35°F

Thu
H: 48°F
L: 37°F

Fri
H: 42°F
L: 31°F

Sat
H: 48°F
L: 31°F

Sun
H: 49°F
L: 33°F

Air Quality

AQI: 1 - Good

PM2.5: 4.08 μg/m3

PM10: 4.88 μg/m3

Carbon Monoxide: 119.68 μg/m3
Nitrogen Dioxide: 1.18 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 98 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 12:13 AM
Sunset: 5:26 PM
Daylight: 10 hrs 25 mins

Moonrise: 8:48 PM
Moon Transit: 2:13 AM
Moonset: 8:32 AM
Moon Phase: Full
Moon Illumination: 90.9%

Best Times for Fishing or Hunting

Major Periods

1:43 AM - 4:13 AM
9:59 AM - 12:29 AM

Minor Periods

8:18 PM - 9:48 PM
8:02 AM - 9:32 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued February 3 at 12:07PM PST until February 4 at 10:00AM PST by NWS Sacramento CA

Effective: Tue February 3, 2026, 12:07 PM
Expires: Wed February 4, 2026, 10:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Northern San Joaquin Valley. * WHEN...From 10 PM this evening to 10 AM PST Wednesday. * 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 February 3 at 12:48PM PST until February 5 at 12:00PM PST by NWS Hanford CA

Effective: Tue February 3, 2026, 12:48 PM
Expires: Wed February 4, 2026, 1:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. Worst case scenario with visibility down to zero. * WHERE...A portion of central California. * WHEN...Until noon PST Thursday. * IMPACTS...Very high transportation risk. Low visibility will make driving conditions hazardous. * ADDITIONAL DETAILS...Highways impacted include, but are not limited to Interstate 5, State Routes 99, 41, 43, 46, 58, 59, 140, 152, 165, 180 and 198.

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

Wednesday, February 4, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 56.3°F

Low Temperature: 35.3°F

Average Temperature: 42.7°F

Average Humidity: 26%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 11.6 mph

UV Index: 0.8

Air Quality

AQI: 1 - Good

PM2.5: 4.35 μg/m3

PM10: 5.15 μg/m3

Carbon Monoxide: 118.52 μg/m3
Nitrogen Dioxide: 1.65 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 101.16 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 12:13 AM
Sunset: 5:26 PM
Daylight: 10 hrs 25 mins

Moonrise: 8:48 PM
Moon Transit: 2:13 AM
Moonset: 8:32 AM
Moon Phase: Full
Moon Illumination: 90.9%

Best Times for Fishing or Hunting

Major Periods

1:43 AM - 4:13 AM
9:59 AM - 12:29 AM

Minor Periods

8:18 PM - 9:48 PM
8:02 AM - 9:32 AM

Action Rating: 3 out of 5

Thursday, February 5, 2026

Weather Forecast

Conditions: Cloudy

High Temperature: 48°F

Low Temperature: 36.8°F

Average Temperature: 41.7°F

Average Humidity: 38%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 8.9 mph

UV Index: 0.7

Air Quality

AQI: 1 - Good

PM2.5: 3.59 μg/m3

PM10: 4.08 μg/m3

Carbon Monoxide: 120.92 μg/m3
Nitrogen Dioxide: 1.69 μg/m3
Sulphur Dioxide: 1.16 μg/m3
Ozone: 100.04 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 12:13 AM
Sunset: 5:27 PM
Daylight: 10 hrs 27 mins

Moonrise: 9:51 PM
Moon Transit: 2:56 AM
Moonset: 8:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 83.4%

Best Times for Fishing or Hunting

Major Periods

2:26 AM - 4:56 AM
10:42 AM - 1:12 PM

Minor Periods

9:21 PM - 10:51 PM
8:25 AM - 9:55 AM

Action Rating: 2 out of 5

Friday, February 6, 2026

Weather Forecast

Conditions: Moderate rain

High Temperature: 42.4°F

Low Temperature: 31.4°F

Average Temperature: 35.7°F

Average Humidity: 77%

Precipitation: 0.75 in

Chance of Rain: 66%

Chance of Snow: 22%

Maximum Wind: 6 mph

UV Index: 0.6

Air Quality

AQI: 1 - Good

PM2.5: 3.49 μg/m3

PM10: 4.51 μg/m3

Carbon Monoxide: 132.76 μg/m3
Nitrogen Dioxide: 1.79 μg/m3
Sulphur Dioxide: 1.09 μg/m3
Ozone: 102.16 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 12:13 AM
Sunset: 5:28 PM
Daylight: 10 hrs 29 mins

Moonrise: 10:53 PM
Moon Transit: 3:38 AM
Moonset: 9:17 AM
Moon Phase: Waning Gibbous
Moon Illumination: 74.1%

Best Times for Fishing or Hunting

Major Periods

3:08 AM - 5:38 AM
11:24 AM - 1:54 PM

Minor Periods

10:23 PM - 11:53 PM
8:47 AM - 10:17 AM

Action Rating: 2 out of 5

Saturday, February 7, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 48°F

Low Temperature: 31.4°F

Average Temperature: 37.6°F

Average Humidity: 47%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 9.2 mph

UV Index: 0.8

Air Quality

AQI: 1 - Good

PM2.5: 4.5 μg/m3

PM10: 5.62 μg/m3

Carbon Monoxide: 146.67 μg/m3
Nitrogen Dioxide: 1.79 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 102 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 12:13 AM
Sunset: 5:29 PM
Daylight: 10 hrs 31 mins

Moonrise: 11:54 PM
Moon Transit: 4:21 AM
Moonset: 9:41 AM
Moon Phase: Waning Gibbous
Moon Illumination: 63.7%

Best Times for Fishing or Hunting

Major Periods

3:51 AM - 6:21 AM
12:07 AM - 2:37 PM

Minor Periods

12:00 AM - 12:00 AM
9:11 AM - 10:41 AM

Action Rating: 2 out of 5

Sunday, February 8, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 49.4°F

Low Temperature: 32.7°F

Average Temperature: 37.3°F

Average Humidity: 43%

Precipitation: 0 in

Chance of Rain: 0%

Chance of Snow: 0%

Maximum Wind: 8.3 mph

UV Index: 0

Air Quality

AQI: 1 - Good

PM2.5: 4.89 μg/m3

PM10: 5.72 μg/m3

Carbon Monoxide: 124.49 μg/m3
Nitrogen Dioxide: 2.25 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 90.85 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 12:13 AM
Sunset: 5:30 PM
Daylight: 10 hrs 34 mins

Moonrise: 12:54 AM
Moon Transit: 5:04 AM
Moonset: 10:08 AM
Moon Phase: Last Quarter
Moon Illumination: 52.5%

Best Times for Fishing or Hunting

Major Periods

4:34 AM - 7:04 AM
12:51 AM - 3:21 PM

Minor Periods

9:38 AM - 11:08 AM
12:00 AM - 12:00 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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Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

Temperature Locations

Local Points of Interest

Nearby Water Temperatures

Weather for Groveland, California

Current Weather

Five Day Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Dense Fog Advisory issued February 3 at 12:07PM PST until February 4 at 10:00AM PST by NWS Sacramento CA

Dense Fog Advisory issued February 3 at 12:48PM PST until February 5 at 12:00PM PST by NWS Hanford CA

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Webcams Near Groveland, CA

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