Water Temperature of Trinity River in Helena, CA

Current Water Temperature

52.9°F 11.6°C
Cold Thermal Gear Required
52.9°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Cold shock risk with rapid dexterity loss (10–15 mins). Wetsuit or drysuit strongly advised for any immersion.

Measurement Time: Wednesday, November 11, 2026, 6:45 AM PST

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

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 mi)
Butte Creek, Chico, CA (103.3 mi)

Weather for Helena, California

Current Weather

68.9°F
Overcast
Conditions: Overcast
Humidity: 43%
Feels Like: 63°F
Wind: SE 11.1 mph
Wind Gusts: 19.7 mph
Pressure: 29.94 in
Precipitation: 0 in
Cloud Cover: 84%
Visibility: 27.6 mi
UV Index: 1.5

Five-Day Weather Forecast

Fog
Wed
H: 69°F
L: 43°F
Overcast
Thu
H: 71°F
L: 48°F
Violent Rain Showers
Fri
H: 51°F
L: 46°F
Moderate Rain
Sat
H: 52°F
L: 45°F
Slight Rain
Sun
H: 48°F
L: 46°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
2.9 μg/m³
Good
PM10
3.1 μg/m³
Good
Ozone (O3)
98 μg/m³
Photochemical
NO2
0.6 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
124 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 3m daylight
Sunrise 6:55 AM
Solar Noon 11:56 AM
Sunset 4:58 PM
Moon
New • 2%
Moonrise 9:36 AM
Transit 1:57 PM
Moonset 6:19 PM

Best Times for Fishing or Hunting

Major Periods

1:02 AM - 3:32 AM
1:27 PM - 3:57 PM

Minor Periods

9:06 AM - 10:36 AM
5:49 PM - 7:19 PM
Action Rating:
Good Action 3/5
Wednesday, November 11, 2026

Weather Forecast

Conditions: Fog
Average Temperature: 53.6°F
Average Humidity: 60%
Chance of Rain: 0%
Wind: 11.3 mph
UV Index: 3.7

Air Quality

EPA Index 1 • Good
PM2.5
2.8 μg/m³
Good
PM10
2.9 μg/m³
Good
Ozone (O3)
73 μg/m³
Photochemical
NO2
2.6 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
121.4 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 3m daylight
Sunrise 6:55 AM
Solar Noon 11:56 AM
Sunset 4:58 PM
Moon
New • 2%
Moonrise 9:36 AM
Transit 1:57 PM
Moonset 6:19 PM

Best Times for Fishing or Hunting

Major Periods

1:02 AM - 3:32 AM
1:27 PM - 3:57 PM

Minor Periods

9:06 AM - 10:36 AM
5:49 PM - 7:19 PM
Action Rating:
Good Action 3/5
Thursday, November 12, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 57°F
Average Humidity: 49%
Chance of Rain: 4%
Wind: 15.2 mph
UV Index: 3.1

Air Quality

EPA Index 1 • Good
PM2.5
5.7 μg/m³
Good
PM10
6.3 μg/m³
Good
Ozone (O3)
81.9 μg/m³
Photochemical
NO2
2.7 μg/m³
Nitrogen Dioxide
SO2
0.7 μg/m³
Sulfur Dioxide
CO
140 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 1m daylight
Sunrise 6:56 AM
Solar Noon 11:56 AM
Sunset 4:57 PM
Moon
Waxing Crescent • 6%
Moonrise 10:29 AM
Transit 2:49 PM
Moonset 7:11 PM

Best Times for Fishing or Hunting

Major Periods

1:53 AM - 4:23 AM
2:19 PM - 4:49 PM

Minor Periods

9:59 AM - 11:29 AM
6:41 PM - 8:11 PM
Action Rating:
Good Action 3/5
Friday, November 13, 2026

Weather Forecast

Conditions: Violent Rain Showers
Average Temperature: 48.6°F
Average Humidity: 83%
Chance of Rain: 100%
Wind: 8.9 mph
UV Index: 0.9

Air Quality

EPA Index 1 • Good
PM2.5
1.5 μg/m³
Good
PM10
2 μg/m³
Good
Ozone (O3)
79.1 μg/m³
Photochemical
NO2
1.5 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
122.9 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 59m daylight
Sunrise 6:57 AM
Solar Noon 11:56 AM
Sunset 4:56 PM
Moon
Waxing Crescent • 13%
Moonrise 11:13 AM
Transit 3:39 PM
Moonset 8:10 PM

Best Times for Fishing or Hunting

Major Periods

2:44 AM - 5:14 AM
3:09 PM - 5:39 PM

Minor Periods

10:43 AM - 12:13 PM
7:40 PM - 9:10 PM
Action Rating:
Fair Action 2/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Moderate Rain
Average Temperature: 47.1°F
Average Humidity: 97%
Chance of Rain: 83%
Wind: 4.3 mph
UV Index: 1.4

Air Quality

EPA Index 1 • Good
PM2.5
0.8 μg/m³
Good
PM10
0.9 μg/m³
Good
Ozone (O3)
65.9 μg/m³
Photochemical
NO2
1.5 μg/m³
Nitrogen Dioxide
SO2
0.1 μg/m³
Sulfur Dioxide
CO
113.7 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 57m daylight
Sunrise 6:59 AM
Solar Noon 11:56 AM
Sunset 4:55 PM
Moon
Waxing Crescent • 21%
Moonrise 11:51 AM
Transit 4:28 PM
Moonset 9:11 PM

Best Times for Fishing or Hunting

Major Periods

3:34 AM - 6:04 AM
3:58 PM - 6:28 PM

Minor Periods

11:21 AM - 12:51 PM
8:41 PM - 10:11 PM
Action Rating:
Fair Action 2/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Slight Rain
Average Temperature: 47.7°F
Average Humidity: 98%
Chance of Rain: 94%
Wind: 5 mph
UV Index: 0.3

Air Quality

EPA Index 1 • Good
PM2.5
1.1 μg/m³
Good
PM10
1.4 μg/m³
Good
Ozone (O3)
56.1 μg/m³
Photochemical
NO2
3.5 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
131.2 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 55m daylight
Sunrise 7:00 AM
Solar Noon 11:57 AM
Sunset 4:54 PM
Moon
Waxing Crescent • 31%
Moonrise 12:22 PM
Transit 5:14 PM
Moonset 10:14 PM

Best Times for Fishing or Hunting

Major Periods

4:21 AM - 6:51 AM
4:44 PM - 7:14 PM

Minor Periods

11:52 AM - 1:22 PM
9:44 PM - 11:14 PM
Action Rating:
Very Good 4/5
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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