Water Temperature of the Tuolumne River in Groveland, CA

Current Water Temperature

60.8°F

Measurement Time: Wednesday, September 10, 2025, 12:30 AM PDT

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

52.3°F
Partly Cloudy
Conditions: Partly Cloudy
Humidity: 100%
Feels Like: 52°F
Wind: E 3.4 mph
Wind Gusts: 6.7 mph
Pressure: 29.9 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Partly Cloudy
Wed
H: 68°F
L: 44°F
Sunny
Thu
H: 69°F
L: 52°F
Sunny
Fri
H: 73°F
L: 49°F
Sunny
Sat
H: 84°F
L: 48°F
Sunny
Sun
H: 81°F
L: 47°F

Air Quality

AQI: 2 - Moderate
PM2.5: 10.36 μg/m3
PM10: 18.69 μg/m3
Carbon Monoxide: 205.35 μg/m3
Nitrogen Dioxide: 2.41 μg/m3
Sulphur Dioxide: 2.04 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 12:56 AM
Sunset: 7:15 PM
Daylight: 12 hrs 37 mins
Moonrise: 8:49 PM
Moon Transit: 3:04 AM
Moonset: 10:04 AM
Moon Phase: Waning Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

2:34 AM - 5:04 AM
10:52 AM - 1:22 PM

Minor Periods

8:19 PM - 9:49 PM
9:34 AM - 11:04 AM

Action Rating: 2 out of 5

Air Quality Alert issued September 3 at 4:06PM PDT by NWS Hanford CA

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Wed September 3, 2025, 4:06 PM
Expires: Wed September 10, 2025, 4:15 PM

The Valley Air District is issuing an Air Quality Alert on September 3, 2025, due to smoke impacts from wildfires in California including the Garnet Fire, the Marmon Fire, the Salt 11-2 Fire, and the TCU September Lightning Complex for San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings, Tulare, and the Valley portion of Kern Counties. This Air Quality Alert is in effect until the fires are extinguished. Exposure to particle pollution can cause serious health problems, aggravate lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. Residents are advised to use caution as conditions warrant. People with heart or lung diseases should follow their doctors advice for dealing with episodes of unhealthy air quality. Additionally, older adults and children should avoid prolonged exposure, strenuous activities or heavy exertion, as conditions dictate. For additional information, call your local San Joaquin Valley Air District office. Modesto 209-557-6400, Fresno 559-230-6000, Bakersfield 661-392-5500 Residents can also follow air quality conditions by downloading the free Valley Air app, available in the Apple store or Google Play.


Air Quality Alert issued September 4 at 8:01AM PDT by NWS Hanford CA

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Thu September 4, 2025, 8:01 AM
Expires: Thu September 11, 2025, 8:15 AM

The Valley Air District is issuing an Air Quality Alert on September 3, 2025, due to smoke impacts from wildfires in California including the Garnet Fire, the Marmon Fire, the Salt 11-2 Fire, and the TCU September Lightning Complex for San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings, Tulare, and the Valley portion of Kern Counties. This Air Quality Alert is in effect until the fires are extinguished. Exposure to particle pollution can cause serious health problems, aggravate lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. Residents are advised to use caution as conditions warrant. People with heart or lung diseases should follow their doctors advice for dealing with episodes of unhealthy air quality. Additionally, older adults and children should avoid prolonged exposure, strenuous activities or heavy exertion, as conditions dictate. For additional information, call your local San Joaquin Valley Air District office. Modesto 209-557-6400, Fresno 559-230-6000, Bakersfield 661-392-5500 Residents can also follow air quality conditions by downloading the free Valley Air app, available in the Apple store or Google Play, or by visiting the AirNow Fire and Smoke Map at fire.airnow.gov.


Dense Smoke Advisory issued September 9 at 11:18PM PDT until September 10 at 11:00AM PDT by NWS Hanford CA

Effective: Tue September 9, 2025, 11:18 PM
Expires: Wed September 10, 2025, 8:00 AM

* WHAT...Visibility one quarter to one half mile in dense smoke. * WHERE...Fresno-Tulare Lower Sierra, Grant Grove Area, Kaiser to Rodgers Ridge, Kings Canyon NP, San Joaquin River Canyon, and Upper San Joaquin River. * WHEN...Until 11 AM PDT Wednesday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...For details on health impacts and recommended precautions, please consult the San Joaquin Valley Air Pollution Control District valleyair.org

Persons with respiratory illnesses should remain indoors to avoid inhaling smoke.


Air Quality Alert issued September 3 at 4:06PM PDT by NWS Hanford CA

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Wed September 3, 2025, 4:06 PM
Expires: Wed September 10, 2025, 4:15 PM

The Valley Air District is issuing an Air Quality Alert on September 3, 2025, due to smoke impacts from wildfires in California including the Garnet Fire, the Marmon Fire, the Salt 11-2 Fire, and the TCU September Lightning Complex for San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings, Tulare, and the Valley portion of Kern Counties. This Air Quality Alert is in effect until the fires are extinguished. Exposure to particle pollution can cause serious health problems, aggravate lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. Residents are advised to use caution as conditions warrant. People with heart or lung diseases should follow their doctors advice for dealing with episodes of unhealthy air quality. Additionally, older adults and children should avoid prolonged exposure, strenuous activities or heavy exertion, as conditions dictate. For additional information, call your local San Joaquin Valley Air District office. Modesto 209-557-6400, Fresno 559-230-6000, Bakersfield 661-392-5500 Residents can also follow air quality conditions by downloading the free Valley Air app, available in the Apple store or Google Play.


Air Quality Alert issued September 4 at 8:01AM PDT by NWS Hanford CA

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Thu September 4, 2025, 8:01 AM
Expires: Thu September 11, 2025, 8:15 AM

The Valley Air District is issuing an Air Quality Alert on September 3, 2025, due to smoke impacts from wildfires in California including the Garnet Fire, the Marmon Fire, the Salt 11-2 Fire, and the TCU September Lightning Complex for San Joaquin, Stanislaus, Merced, Madera, Fresno, Kings, Tulare, and the Valley portion of Kern Counties. This Air Quality Alert is in effect until the fires are extinguished. Exposure to particle pollution can cause serious health problems, aggravate lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. Residents are advised to use caution as conditions warrant. People with heart or lung diseases should follow their doctors advice for dealing with episodes of unhealthy air quality. Additionally, older adults and children should avoid prolonged exposure, strenuous activities or heavy exertion, as conditions dictate. For additional information, call your local San Joaquin Valley Air District office. Modesto 209-557-6400, Fresno 559-230-6000, Bakersfield 661-392-5500 Residents can also follow air quality conditions by downloading the free Valley Air app, available in the Apple store or Google Play, or by visiting the AirNow Fire and Smoke Map at fire.airnow.gov.


Wednesday, September 10, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 62°F
Average Humidity: 71%
Chance of Rain: 0%
Wind: 9.2 mph
UV Index: 0.8

Air Quality

AQI: 1 - Good
PM2.5: 10.83 μg/m3
PM10: 21.41 μg/m3
Carbon Monoxide: 316.13 μg/m3
Nitrogen Dioxide: 9.97 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 64.56 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 12:56 AM
Sunset: 7:15 PM
Daylight: 12 hrs 37 mins
Moonrise: 8:49 PM
Moon Transit: 3:04 AM
Moonset: 10:04 AM
Moon Phase: Waning Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

2:34 AM - 5:04 AM
10:52 AM - 1:22 PM

Minor Periods

8:19 PM - 9:49 PM
9:34 AM - 11:04 AM

Action Rating: 2 out of 5

Thursday, September 11, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 61.5°F
Average Humidity: 65%
Chance of Rain: 0%
Wind: 10.1 mph
UV Index: 0.7

Air Quality

AQI: 1 - Good
PM2.5: 13.43 μg/m3
PM10: 18.77 μg/m3
Carbon Monoxide: 415.66 μg/m3
Nitrogen Dioxide: 9.73 μg/m3
Sulphur Dioxide: 1.46 μg/m3
Ozone: 65.96 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 12:56 AM
Sunset: 7:13 PM
Daylight: 12 hrs 34 mins
Moonrise: 9:24 PM
Moon Transit: 3:58 AM
Moonset: 11:19 AM
Moon Phase: Waning Gibbous
Moon Illumination: 77.5%

Best Times for Fishing or Hunting

Major Periods

3:28 AM - 5:58 AM
11:47 AM - 2:17 PM

Minor Periods

8:54 PM - 10:24 PM
10:49 AM - 12:19 AM

Action Rating: 2 out of 5

Friday, September 12, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 63.7°F
Average Humidity: 56%
Chance of Rain: 0%
Wind: 10.5 mph
UV Index: 0.8

Air Quality

AQI: 1 - Good
PM2.5: 8.15 μg/m3
PM10: 13.16 μg/m3
Carbon Monoxide: 347.87 μg/m3
Nitrogen Dioxide: 8.21 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 73.72 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:55 AM
Sunset: 7:11 PM
Daylight: 12 hrs 32 mins
Moonrise: 10:07 PM
Moon Transit: 4:54 AM
Moonset: 12:36 AM
Moon Phase: Waning Gibbous
Moon Illumination: 67.4%

Best Times for Fishing or Hunting

Major Periods

4:24 AM - 6:54 AM
12:44 AM - 3:14 PM

Minor Periods

9:37 PM - 11:07 PM
12:06 AM - 1:36 PM

Action Rating: 3 out of 5

Saturday, September 13, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 63.6°F
Average Humidity: 42%
Chance of Rain: 0%
Wind: 9.4 mph
UV Index: 0.4

Air Quality

AQI: 1 - Good
PM2.5: 11.29 μg/m3
PM10: 15.44 μg/m3
Carbon Monoxide: 299.4 μg/m3
Nitrogen Dioxide: 8.42 μg/m3
Sulphur Dioxide: 2.06 μg/m3
Ozone: 89.64 μg/m3

Astronomical

Sunrise: 6:41 AM
Sun Transit: 12:55 AM
Sunset: 7:10 PM
Daylight: 12 hrs 29 mins
Moonrise: 10:59 PM
Moon Transit: 5:54 AM
Moonset: 1:50 PM
Moon Phase: Waning Gibbous
Moon Illumination: 56.4%

Best Times for Fishing or Hunting

Major Periods

5:24 AM - 7:54 AM
1:45 PM - 4:15 PM

Minor Periods

10:29 PM - 11:59 PM
1:20 PM - 2:50 PM

Action Rating: 2 out of 5

Sunday, September 14, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 63.3°F
Average Humidity: 40%
Chance of Rain: 0%
Wind: 10.7 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 19.71 μg/m3
PM10: 28.77 μg/m3
Carbon Monoxide: 449.98 μg/m3
Nitrogen Dioxide: 12.34 μg/m3
Sulphur Dioxide: 2.59 μg/m3
Ozone: 90.46 μg/m3

Astronomical

Sunrise: 6:41 AM
Sun Transit: 12:55 AM
Sunset: 7:08 PM
Daylight: 12 hrs 27 mins
Moonrise: 12:00 PM
Moon Transit: 6:56 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 45.1%

Best Times for Fishing or Hunting

Major Periods

6:26 AM - 8:56 AM
2:47 PM - 5:17 PM

Minor Periods

12:00 AM - 12:00 AM
2:26 PM - 3:56 PM

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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