Water Temperature of the Trinity River in Lewiston, CA

Current Water Temperature

49.3°F

Measurement Time: Saturday, April 18, 2026, 7:45 AM PDT

Temperature Locations

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Local Points of Interest

Lewiston Dam

Trinity River

Station Name: TRINITY R A LEWISTON CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 1,860 feet

Nearest Address:
165 Trinity River Hatchery Rd
Lewiston, CA 96052
Trinity County

GPS Coordinates: 40.7247222, -122.801111

Nearby Water Temperatures

Trinity River, Douglas City, CA (9.8 mi)
Trinity River, Helena, CA (16.7 mi)
Trinity River, Hoopa, CA (50.8 mi)
Klamath River, Orleans, CA (55.3 mi)
Mill Creek, Los Milinos, CA (61.8 mi)
Deer Creek, Vina, CA (66.5 mi)
Hat Creek, Old Station, CA (72.2 mi)
Humboldt Bay, Eureka, CA (74.2 mi)
Elder Creek, Branscomb, CA (81.9 mi)
Klamath River, Klamath, CA (81.9 mi)
Pacific Ocean, Manila, CA (82.2 mi)
Butte Creek, Chico, CA (89.9 mi)
Pacific Ocean, Eureka, CA (90.4 mi)
Crescent Harbor, Crescent City, CA (100.7 mi)
Klamath River, Keno, OR (101.2 mi)

Weather for Lewiston, California

Current Weather

71.8°F
Sunny
Sunny
75.1°F
72°F
19%
ESE 4.7 mph
5.4 mph
69.6°F
43.9°F
0 in
0%
9 mi
1015 mbar
7.4

Five Day Weather Forecast

Sunny
Sat
H: 73°F
L: 41°F
Partly Cloudy
Sun
H: 65°F
L: 43°F
Moderate rain
Mon
H: 45°F
L: 39°F
Moderate rain
Tue
H: 45°F
L: 42°F
Patchy rain nearby
Wed
H: 52°F
L: 34°F

Air Quality

AQI: 1 - Good
PM2.5: 5.15 μg/m3
PM10: 9.95 μg/m3
Carbon Monoxide: 188.85 μg/m3
Nitrogen Dioxide: 5.95 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 114 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 1:10 PM
Sunset: 7:54 PM
Daylight: 13 hrs 26 mins
Moonrise: 6:49 AM
Moon Transit: 2:20 PM
Moonset: 10:05 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:50 PM - 4:20 PM

Minor Periods

9:35 PM - 11:05 PM
6:19 AM - 7:49 AM

Action Rating: 4 out of 5

Freeze Warning issued April 18 at 1:22AM PDT until April 18 at 8:00AM PDT by NWS Eureka CA

Effective: Sat April 18, 2026, 1:22 AM
Expires: Sat April 18, 2026, 8:00 AM

* WHAT...Sub-freezing temperatures as low as 31. * WHERE...Northeastern Trinity, Northwestern and Central Trinity, and Southern Trinity. * WHEN...Until 8 AM PDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants from the cold.
Saturday, April 18, 2026

Weather Forecast

Sunny
72.7°F
40.5°F
56.4°F
44%
0 in
0%
0%
6.5 mph
7.7


Air Quality

AQI: 1 - Good
PM2.5: 4.37 μg/m3
PM10: 7.52 μg/m3
Carbon Monoxide: 167.97 μg/m3
Nitrogen Dioxide: 5.33 μg/m3
Sulphur Dioxide: 1.16 μg/m3
Ozone: 101.2 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 1:10 PM
Sunset: 7:54 PM
Daylight: 13 hrs 26 mins
Moonrise: 6:49 AM
Moon Transit: 2:20 PM
Moonset: 10:05 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:50 PM - 4:20 PM

Minor Periods

9:35 PM - 11:05 PM
6:19 AM - 7:49 AM

Action Rating: 4 out of 5

Sunday, April 19, 2026

Weather Forecast

Partly Cloudy
65.4°F
42.5°F
53.9°F
56%
0 in
0%
0%
8.9 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 6.01 μg/m3
PM10: 13.11 μg/m3
Carbon Monoxide: 173.09 μg/m3
Nitrogen Dioxide: 3.49 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 130.76 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:10 PM
Sunset: 7:55 PM
Daylight: 13 hrs 29 mins
Moonrise: 7:29 AM
Moon Transit: 3:21 PM
Moonset: 11:24 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:51 PM - 5:21 PM

Minor Periods

12:00 AM - 12:00 AM
6:59 AM - 8:29 AM

Action Rating: 2 out of 5

Monday, April 20, 2026

Weather Forecast

Moderate rain
45°F
38.7°F
42.9°F
84%
0.72 in
82%
0%
4.9 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 4.94 μg/m3
PM10: 10.38 μg/m3
Carbon Monoxide: 155.17 μg/m3
Nitrogen Dioxide: 3.81 μg/m3
Sulphur Dioxide: 1.57 μg/m3
Ozone: 100.92 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 1:10 PM
Sunset: 7:56 PM
Daylight: 13 hrs 31 mins
Moonrise: 8:20 AM
Moon Transit: 4:26 PM
Moonset: 12:24 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:56 PM - 6:26 PM

Minor Periods

7:50 AM - 9:20 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, April 21, 2026

Weather Forecast

Moderate rain
44.7°F
41.6°F
43.4°F
98%
0.74 in
76%
0%
3.6 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 1.63 μg/m3
PM10: 2.03 μg/m3
Carbon Monoxide: 154.92 μg/m3
Nitrogen Dioxide: 3.18 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 78.52 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:09 PM
Sunset: 7:57 PM
Daylight: 13 hrs 34 mins
Moonrise: 9:21 AM
Moon Transit: 5:31 PM
Moonset: 12:37 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
5:01 PM - 7:31 PM

Minor Periods

8:51 AM - 10:21 AM
12:07 AM - 1:37 AM

Action Rating: 3 out of 5

Wednesday, April 22, 2026

Weather Forecast

Patchy rain nearby
51.8°F
34°F
43.5°F
90%
0.08 in
87%
0%
4.5 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 1.64 μg/m3
PM10: 1.79 μg/m3
Carbon Monoxide: 156.01 μg/m3
Nitrogen Dioxide: 3.96 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 75.69 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 1:09 PM
Sunset: 7:58 PM
Daylight: 13 hrs 36 mins
Moonrise: 10:32 AM
Moon Transit: 6:33 PM
Moonset: 1:37 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

12:58 AM - 3:28 AM
6:03 PM - 8:33 PM

Minor Periods

10:02 AM - 11:32 AM
1:07 AM - 2:37 AM

Action Rating: 2 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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