Water Temperature of Trinity River in Helena, CA

Current Water Temperature

59.2°F

Measurement Time: Monday, September 1, 2025, 4:45 AM PDT

Temperature Locations

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Local Points of Interest

Junction City, CA; Shasta Trinity National Forest

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Trinity River

Station Name: TRINITY R AB NF TRINITY R NR HELENA CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 1,404 feet / 428 meters

Nearest Address:
State Rte 299
Helena, CA 96052
Trinity County

GPS Coordinates: 40.76653148, -123.1144757

Nearby Water Temperatures

Trinity River, Douglas City, CA (11.8 mi)
Trinity River, Lewiston, CA (16.7 mi)
Trinity River, Hoopa, CA (35.2 mi)
Klamath River, Orleans, CA (43.1 mi)
Humboldt Bay, Eureka, CA (57.7 mi)
Pacific Ocean, Manila, CA (65.6 mi)
Klamath River, Klamath, CA (68.3 mi)
Pacific Ocean, Eureka, CA (73.9 mi)
Mill Creek, Los Milinos, CA (75.6 mi)
Elder Creek, Branscomb, CA (76.9 mi)
Deer Creek, Vina, CA (80.4 mi)
Crescent Harbor, Crescent City, CA (87.5 mi)
Hat Creek, Old Station, CA (88.7 mi)
Pacific Ocean, Petrolia, CA (91.0 mi)
Butte Creek, Chico, CA (103.3 mi)

Weather for Helena, California

Current Weather

79.2°F
Sunny
Conditions: Sunny
Humidity: 32%
Feels Like: 77.4°F
Wind: SE 3.1 mph
Wind Gusts: 3.6 mph
Pressure: 30.03 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 7

Five Day Weather Forecast

Sunny
Mon
H: 89°F
L: 58°F
Sunny
Tue
H: 91°F
L: 60°F
Sunny
Wed
H: 90°F
L: 68°F
Partly Cloudy
Thu
H: 91°F
L: 58°F
Sunny
Fri
H: 86°F
L: 50°F

Air Quality

AQI: 2 - Moderate
PM2.5: 6.29 μg/m3
PM10: 6.66 μg/m3
Carbon Monoxide: 220.15 μg/m3
Nitrogen Dioxide: 4.63 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 96 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 1:12 PM
Sunset: 7:44 PM
Daylight: 13 hrs 4 mins
Moonrise: 4:15 PM
Moon Transit: 8:30 PM
Moonset: 12:54 AM
Moon Phase: First Quarter
Moon Illumination: 64.3%

Best Times for Fishing or Hunting

Major Periods

2:58 AM - 5:28 AM
8:00 PM - 10:30 PM

Minor Periods

3:45 PM - 5:15 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Fire Weather Watch issued September 1 at 12:11AM PDT until September 2 at 8:00PM PDT by NWS Eureka CA

Effective: Mon September 1, 2025, 12:11 AM
Expires: Mon September 1, 2025, 12:00 PM

...ISOLATED DRY THUNDERSTORMS TUESDAY AFTERNOON AND EARLY EVENING... .Isolated dry thunderstorms are possible over the interior Tuesday afternoon and into early evening. Threats include erratic gusty winds and lightning. Lightning on dry fuels may lead to new fire starts. In addition, gusty winds combined with hot temperatures and low relative humidity will also produce near critical fire weather conditions. Existing fires and any new fire will have the potential to spread rapidly. * AFFECTED AREA...Fire weather zone 204, 277 and 283. * THUNDERSTORMS...Isolated dry storms over high terrain in the afternoon and early evening hours. * OUTFLOW WINDS...Gusty and erratic outflow winds over 40 mph. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * Additional Impacts...Hot, dry weather and breezy winds will increase the fire danger even in areas away from thunderstorms.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued September 1 at 12:11AM PDT until September 2 at 8:00PM PDT by NWS Eureka CA

Effective: Mon September 1, 2025, 12:11 AM
Expires: Mon September 1, 2025, 12:00 PM

...ISOLATED DRY THUNDERSTORMS TUESDAY AFTERNOON AND EARLY EVENING... .Isolated dry thunderstorms are possible over the interior Tuesday afternoon and into early evening. Threats include erratic gusty winds and lightning. Lightning on dry fuels may lead to new fire starts. In addition, gusty winds combined with hot temperatures and low relative humidity will also produce near critical fire weather conditions. Existing fires and any new fire will have the potential to spread rapidly. * AFFECTED AREA...Fire weather zone 204, 277 and 283. * THUNDERSTORMS...Isolated dry storms over high terrain in the afternoon and early evening hours. * OUTFLOW WINDS...Gusty and erratic outflow winds over 40 mph. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * Additional Impacts...Hot, dry weather and breezy winds will increase the fire danger even in areas away from thunderstorms.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued September 1 at 12:11AM PDT until September 2 at 8:00PM PDT by NWS Eureka CA

Effective: Mon September 1, 2025, 12:11 AM
Expires: Mon September 1, 2025, 12:00 PM

...ISOLATED DRY THUNDERSTORMS TUESDAY AFTERNOON AND EARLY EVENING... .Isolated dry thunderstorms are possible over the interior Tuesday afternoon and into early evening. Threats include erratic gusty winds and lightning. Lightning on dry fuels may lead to new fire starts. In addition, gusty winds combined with hot temperatures and low relative humidity will also produce near critical fire weather conditions. Existing fires and any new fire will have the potential to spread rapidly. * AFFECTED AREA...Fire weather zone 204, 277 and 283. * THUNDERSTORMS...Isolated dry storms over high terrain in the afternoon and early evening hours. * OUTFLOW WINDS...Gusty and erratic outflow winds over 40 mph. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * Additional Impacts...Hot, dry weather and breezy winds will increase the fire danger even in areas away from thunderstorms.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued September 1 at 12:11AM PDT until September 2 at 8:00PM PDT by NWS Eureka CA

Effective: Mon September 1, 2025, 12:11 AM
Expires: Mon September 1, 2025, 12:00 PM

...ISOLATED DRY THUNDERSTORMS TUESDAY AFTERNOON AND EARLY EVENING... .Isolated dry thunderstorms are possible over the interior Tuesday afternoon and into early evening. Threats include erratic gusty winds and lightning. Lightning on dry fuels may lead to new fire starts. In addition, gusty winds combined with hot temperatures and low relative humidity will also produce near critical fire weather conditions. Existing fires and any new fire will have the potential to spread rapidly. * AFFECTED AREA...Fire weather zone 204, 277 and 283. * THUNDERSTORMS...Isolated dry storms over high terrain in the afternoon and early evening hours. * OUTFLOW WINDS...Gusty and erratic outflow winds over 40 mph. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. * Additional Impacts...Hot, dry weather and breezy winds will increase the fire danger even in areas away from thunderstorms.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
Monday, September 1, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 72°F
Average Humidity: 43%
Chance of Rain: 0%
Wind: 8.5 mph
UV Index: 1.9

Air Quality

AQI: 2 - Moderate
PM2.5: 16.22 μg/m3
PM10: 17.08 μg/m3
Carbon Monoxide: 229.77 μg/m3
Nitrogen Dioxide: 9.72 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 89 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 1:12 PM
Sunset: 7:44 PM
Daylight: 13 hrs 4 mins
Moonrise: 4:15 PM
Moon Transit: 8:30 PM
Moonset: 12:54 AM
Moon Phase: First Quarter
Moon Illumination: 64.3%

Best Times for Fishing or Hunting

Major Periods

2:58 AM - 5:28 AM
8:00 PM - 10:30 PM

Minor Periods

3:45 PM - 5:15 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, September 2, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 76.4°F
Average Humidity: 33%
Chance of Rain: 0%
Wind: 11.6 mph
UV Index: 1.8

Air Quality

AQI: 1 - Good
PM2.5: 12.19 μg/m3
PM10: 13.92 μg/m3
Carbon Monoxide: 247.53 μg/m3
Nitrogen Dioxide: 10.26 μg/m3
Sulphur Dioxide: 0.92 μg/m3
Ozone: 89.68 μg/m3

Astronomical

Sunrise: 6:41 AM
Sun Transit: 1:11 PM
Sunset: 7:42 PM
Daylight: 13 hrs 1 mins
Moonrise: 5:04 PM
Moon Transit: 9:24 PM
Moonset: 12:47 AM
Moon Phase: First Quarter
Moon Illumination: 74.7%

Best Times for Fishing or Hunting

Major Periods

3:52 AM - 6:22 AM
8:54 PM - 11:24 PM

Minor Periods

4:34 PM - 6:04 PM
12:17 AM - 1:47 AM

Action Rating: 3 out of 5

Wednesday, September 3, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 76.2°F
Average Humidity: 35%
Chance of Rain: 0%
Wind: 6.3 mph
UV Index: 1.8

Air Quality

AQI: 2 - Moderate
PM2.5: 15.56 μg/m3
PM10: 18.25 μg/m3
Carbon Monoxide: 276.83 μg/m3
Nitrogen Dioxide: 9.86 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 98.92 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:11 PM
Sunset: 7:41 PM
Daylight: 12 hrs 58 mins
Moonrise: 5:46 PM
Moon Transit: 10:18 PM
Moonset: 1:49 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 83.9%

Best Times for Fishing or Hunting

Major Periods

4:46 AM - 7:16 AM
12:00 AM - 12:00 AM

Minor Periods

5:16 PM - 6:46 PM
1:19 AM - 2:49 AM

Action Rating: 2 out of 5

Thursday, September 4, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 74.9°F
Average Humidity: 36%
Chance of Rain: 0%
Wind: 6.3 mph
UV Index: 1.8

Air Quality

AQI: 2 - Moderate
PM2.5: 25.58 μg/m3
PM10: 28.33 μg/m3
Carbon Monoxide: 319.83 μg/m3
Nitrogen Dioxide: 10.22 μg/m3
Sulphur Dioxide: 1.4 μg/m3
Ozone: 97.32 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:11 PM
Sunset: 7:39 PM
Daylight: 12 hrs 56 mins
Moonrise: 6:21 PM
Moon Transit: 11:10 PM
Moonset: 2:57 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 91.3%

Best Times for Fishing or Hunting

Major Periods

5:40 AM - 8:10 AM
12:00 AM - 12:00 AM

Minor Periods

5:51 PM - 7:21 PM
2:27 AM - 3:57 AM

Action Rating: 3 out of 5

Friday, September 5, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 66.6°F
Average Humidity: 49%
Chance of Rain: 0%
Wind: 9.2 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 20.59 μg/m3
PM10: 23.44 μg/m3
Carbon Monoxide: 347.8 μg/m3
Nitrogen Dioxide: 12.79 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 82.92 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 1:10 PM
Sunset: 7:37 PM
Daylight: 12 hrs 53 mins
Moonrise: 6:51 PM
Moon Transit: 12:00 AM
Moonset: 4:09 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:32 AM - 9:02 AM

Minor Periods

6:21 PM - 7:51 PM
3:39 AM - 5:09 AM

Action Rating: 4 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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