Water Temperature of Trinity River in Helena, CA

Current Water Temperature

48.2°F 9.0°C
Frigid Dangerously Cold
48.2°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Severe hypothermia and cold water shock risk. Unprotected swimming causes rapid loss of dexterity in under 5 minutes.

Measurement Time: Saturday, November 7, 2026, 7:45 PM 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

37.9°F
Overcast
Conditions: Overcast
Humidity: 83%
Feels Like: 34.2°F
Wind: SSE 2.2 mph
Wind Gusts: 5.3 mph
Pressure: 30.16 in
Precipitation: 0 in
Cloud Cover: 95%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Overcast
Sun
H: 67°F
L: 37°F
Overcast
Mon
H: 59°F
L: 39°F
Sunny
Tue
H: 72°F
L: 38°F

Air Quality

EPA Index 1 • Good

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

PM2.5
3.4 μg/m³
Good
PM10
4.1 μg/m³
Good
Ozone (O3)
54 μg/m³
Photochemical
NO2
4.4 μg/m³
Nitrogen Dioxide
SO2
0.3 μg/m³
Sulfur Dioxide
CO
121 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 9m daylight
Sunrise 6:52 AM
Solar Noon 11:56 AM
Sunset 5:01 PM
Moon
New • 0%
Moonrise 6:27 AM
Transit 11:27 AM
Moonset 4:21 PM

Best Times for Fishing or Hunting

Major Periods

10:57 AM - 1:27 PM
11:21 PM - 1:51 AM

Minor Periods

5:57 AM - 7:27 AM
3:51 PM - 5:21 PM
Action Rating:
Very Good 4/5
Sunday, November 8, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 48.6°F
Average Humidity: 74%
Chance of Rain: 22%
Wind: 3.6 mph
UV Index: 2.4

Astronomical

Sun
10h 9m daylight
Sunrise 6:52 AM
Solar Noon 11:56 AM
Sunset 5:01 PM
Moon
New • 0%
Moonrise 6:27 AM
Transit 11:27 AM
Moonset 4:21 PM

Best Times for Fishing or Hunting

Major Periods

10:57 AM - 1:27 PM
11:21 PM - 1:51 AM

Minor Periods

5:57 AM - 7:27 AM
3:51 PM - 5:21 PM
Action Rating:
Very Good 4/5
Monday, November 9, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 47.3°F
Average Humidity: 90%
Chance of Rain: 88%
Wind: 3.8 mph
UV Index: 2.3

Astronomical

Sun
10h 7m daylight
Sunrise 6:53 AM
Solar Noon 11:56 AM
Sunset 5:00 PM
Moon
New • 2%
Moonrise 7:33 AM
Transit 12:16 PM
Moonset 4:54 PM

Best Times for Fishing or Hunting

Major Periods

12:11 AM - 2:41 AM
11:46 AM - 2:16 PM

Minor Periods

7:03 AM - 8:33 AM
4:24 PM - 5:54 PM
Action Rating:
Very Good 4/5
Tuesday, November 10, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 50°F
Average Humidity: 68%
Chance of Rain: 8%
Wind: 3.1 mph
UV Index: 3.1

Astronomical

Sun
10h 5m daylight
Sunrise 6:54 AM
Solar Noon 11:56 AM
Sunset 4:59 PM
Moon
New • 0%
Moonrise 8:37 AM
Transit 1:06 PM
Moonset 5:32 PM

Best Times for Fishing or Hunting

Major Periods

12:11 AM - 2:41 AM
12:36 PM - 3:06 PM

Minor Periods

8:07 AM - 9:37 AM
5:02 PM - 6:32 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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