Water Temperature of the Trinity River in Lewiston, CA

Current Water Temperature

49.6°F

Measurement Time: Friday, July 11, 2025, 12:15 PM PDT

Temperature Locations

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Local Points of Interest

Lewiston Dam

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Trinity River

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

Elevation Above Sea Level: 1,860 feet / 567 meters

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

101.1°F
Sunny
Conditions: Sunny
Humidity: 13%
Feels Like: 102.1°F
Wind: WSW 5.1 mph
Wind Gusts: 5.9 mph
Pressure: 29.89 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0.5

Five Day Weather Forecast

Sunny
Fri
H: 99°F
L: 67°F
Sunny
Sat
H: 101°F
L: 67°F
Sunny
Sun
H: 100°F
L: 71°F
Sunny
Mon
H: 103°F
L: 72°F
Sunny
Tue
H: 102°F
L: 60°F

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 21.28 μg/m3
PM10: 21.83 μg/m3
Carbon Monoxide: 397.75 μg/m3
Nitrogen Dioxide: 12.03 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:16 PM
Sunset: 8:43 PM
Daylight: 14 hrs 53 mins
Moonrise: 9:51 PM
Moon Transit: 1:45 AM
Moonset: 6:22 AM
Moon Phase: Full
Moon Illumination: 97.4%

Best Times for Fishing or Hunting

Major Periods

1:15 AM - 3:45 AM
9:10 AM - 11:40 AM

Minor Periods

9:21 PM - 10:51 PM
5:52 AM - 7:22 AM

Action Rating: 4 out of 5

Extreme Heat Warning issued July 11 at 12:48PM PDT until July 14 at 11:00PM PDT by NWS Eureka CA

Effective: Fri July 11, 2025, 12:48 PM
Expires: Fri July 11, 2025, 9:00 PM

* WHAT...Dangerously hot conditions with high temperatures of 103 to 108. * WHERE...Trinity County. * WHEN...Until 11 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Overnight lows around 60 will provide some relief in the valleys, but higher terrain may see lows remain in the 70s.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.


Heat Advisory issued July 11 at 1:19PM PDT until July 14 at 11:00PM PDT by NWS Sacramento CA

Effective: Fri July 11, 2025, 1:19 PM
Expires: Sat July 12, 2025, 5:00 PM

* WHAT...High temperatures up to 95 to 110 expected. Overnight low temperatures in the upper 60s to around 80. Widespread Moderate HeatRisk with areas of Major HeatRisk. * WHERE...Burney Basin / Eastern Shasta County, Northern and Central Sacramento Valley, Mountains Southwestern Shasta County to Western Colusa County, Northeast Foothills/Sacramento Valley, Shasta Lake Area / Northern Shasta County, and Western Plumas County/Lassen Park. * WHEN...Until 11 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during heat events, particularly for those working or participating in outdoor activities.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors, especially those more susceptible to heat impacts.


Heat Advisory issued July 11 at 1:19PM PDT until July 14 at 11:00PM PDT by NWS Sacramento CA

Effective: Fri July 11, 2025, 1:19 PM
Expires: Sat July 12, 2025, 5:00 PM

* WHAT...High temperatures up to 95 to 110 expected. Overnight low temperatures in the upper 60s to around 80. Widespread Moderate HeatRisk with areas of Major HeatRisk. * WHERE...Burney Basin / Eastern Shasta County, Northern and Central Sacramento Valley, Mountains Southwestern Shasta County to Western Colusa County, Northeast Foothills/Sacramento Valley, Shasta Lake Area / Northern Shasta County, and Western Plumas County/Lassen Park. * WHEN...Until 11 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during heat events, particularly for those working or participating in outdoor activities.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors, especially those more susceptible to heat impacts.


Extreme Heat Warning issued July 11 at 12:48PM PDT until July 14 at 11:00PM PDT by NWS Eureka CA

Effective: Fri July 11, 2025, 12:48 PM
Expires: Fri July 11, 2025, 9:00 PM

* WHAT...Dangerously hot conditions with high temperatures of 102 to 108. * WHERE...Del Norte Interior and Northern Humboldt Interior. * WHEN...From 11 AM Saturday to 11 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Overnight lows around 60 will provide some relief in the valleys, but higher terrain may see lows remain in the 70s.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.


Heat Advisory issued July 11 at 12:48PM PDT until July 14 at 11:00PM PDT by NWS Eureka CA

Effective: Fri July 11, 2025, 12:48 PM
Expires: Fri July 11, 2025, 9:00 PM

* WHAT...Moderate to major heat risk is possible with highs of 100 to 105. * WHERE...Southern Humboldt Interior. * WHEN...From 11 AM Saturday to 11 PM PDT Monday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Friday, July 11, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 83.6°F
Average Humidity: 37%
Chance of Rain: 0%
Wind: 5.1 mph
UV Index: 2.7

Air Quality

AQI: 2 - Moderate
PM2.5: 27.37 μg/m3
PM10: 28.7 μg/m3
Carbon Monoxide: 294.52 μg/m3
Nitrogen Dioxide: 5.29 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 95.96 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:16 PM
Sunset: 8:43 PM
Daylight: 14 hrs 53 mins
Moonrise: 9:51 PM
Moon Transit: 1:45 AM
Moonset: 6:22 AM
Moon Phase: Full
Moon Illumination: 97.4%

Best Times for Fishing or Hunting

Major Periods

1:15 AM - 3:45 AM
9:10 AM - 11:40 AM

Minor Periods

9:21 PM - 10:51 PM
5:52 AM - 7:22 AM

Action Rating: 4 out of 5

Saturday, July 12, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 85.1°F
Average Humidity: 36%
Chance of Rain: 0%
Wind: 6.7 mph
UV Index: 2.8

Air Quality

AQI: 2 - Moderate
PM2.5: 17.58 μg/m3
PM10: 19.13 μg/m3
Carbon Monoxide: 316.94 μg/m3
Nitrogen Dioxide: 5.94 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 108 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:16 PM
Sunset: 8:43 PM
Daylight: 14 hrs 52 mins
Moonrise: 10:21 PM
Moon Transit: 2:37 AM
Moonset: 7:32 AM
Moon Phase: Full
Moon Illumination: 92.7%

Best Times for Fishing or Hunting

Major Periods

2:07 AM - 4:37 AM
10:01 AM - 12:31 AM

Minor Periods

9:51 PM - 11:21 PM
7:02 AM - 8:32 AM

Action Rating: 3 out of 5

Sunday, July 13, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 85.7°F
Average Humidity: 36%
Chance of Rain: 0%
Wind: 6.5 mph
UV Index: 2.9

Air Quality

AQI: 2 - Moderate
PM2.5: 17.83 μg/m3
PM10: 19.8 μg/m3
Carbon Monoxide: 365.19 μg/m3
Nitrogen Dioxide: 6.96 μg/m3
Sulphur Dioxide: 1.6 μg/m3
Ozone: 124.24 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:17 PM
Sunset: 8:42 PM
Daylight: 14 hrs 51 mins
Moonrise: 10:47 PM
Moon Transit: 3:27 AM
Moonset: 8:44 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.7%

Best Times for Fishing or Hunting

Major Periods

2:57 AM - 5:27 AM
10:50 AM - 1:20 PM

Minor Periods

10:17 PM - 11:47 PM
8:14 AM - 9:44 AM

Action Rating: 3 out of 5

Monday, July 14, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 88.1°F
Average Humidity: 31%
Chance of Rain: 0%
Wind: 6.3 mph
UV Index: 2.8

Air Quality

AQI: 2 - Moderate
PM2.5: 15.5 μg/m3
PM10: 16.4 μg/m3
Carbon Monoxide: 341.21 μg/m3
Nitrogen Dioxide: 6.72 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 109.88 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:17 PM
Sunset: 8:42 PM
Daylight: 14 hrs 49 mins
Moonrise: 11:10 PM
Moon Transit: 4:15 AM
Moonset: 9:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.9%

Best Times for Fishing or Hunting

Major Periods

3:45 AM - 6:15 AM
11:37 AM - 2:07 PM

Minor Periods

12:00 AM - 12:00 AM
9:25 AM - 10:55 AM

Action Rating: 3 out of 5

Tuesday, July 15, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 81°F
Average Humidity: 29%
Chance of Rain: 0%
Wind: 7.8 mph
UV Index: 2.8

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 40.47 μg/m3
PM10: 41.95 μg/m3
Carbon Monoxide: 459.23 μg/m3
Nitrogen Dioxide: 11.88 μg/m3
Sulphur Dioxide: 1.76 μg/m3
Ozone: 103.92 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:17 PM
Sunset: 8:41 PM
Daylight: 14 hrs 48 mins
Moonrise: 12:10 AM
Moon Transit: 10:15 PM
Moonset: 11:05 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.7%

Best Times for Fishing or Hunting

Major Periods

12:24 AM - 2:54 PM
12:00 AM - 12:00 AM

Minor Periods

10:35 AM - 12:05 AM
12:00 AM - 12:00 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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