Water Temperature of the East Fork Russian River in Ukiah, CA

Current Water Temperature

56.1°F

Measurement Time: Thursday, April 16, 2026, 6:15 PM PDT

Temperature Locations

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Local Points of Interest

Lake Mendocino; Calpella, CA

East Fork Russian River

Station Name: EF RUSSIAN R NR CALPELLA CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 837 feet

Nearest Address:
4148 State Rte 20
Ukiah, CA 95482
Mendocino County

GPS Coordinates: 39.24655605, -123.1302806

Nearby Water Temperatures

Russian River, Hopland, CA (15.2 mi)
Russian River, Hopland, CA (25.7 mi)
Arena Cove, Point Arena, CA (38.7 mi)
Dry Creek, Healdsburg, CA (42.4 mi)
Elder Creek, Branscomb, CA (43.2 mi)
Russian River, Jimtown, CA (43.7 mi)
Russian River, Healdsburg, CA (44.9 mi)
Russian River, Forestville, CA (52.1 mi)
Mark West Creek, Forestville, CA (54.1 mi)
Pope Creek, Saint Helena, CA (58.3 mi)
Maxwell Creek, Saint Helena, CA (60.7 mi)
Sacramento River, Meridian, CA (71.9 mi)
Cache Creek, Yolo, CA (79.6 mi)
Mill Creek, Los Milinos, CA (81.1 mi)
Deer Creek, Vina, CA (82.3 mi)

Weather for Ukiah, California

Current Weather

44.1°F
Clear
Clear
41.6°F
49.5°F
85%
NE 4.5 mph
9.4 mph
49.2°F
20.6°F
0 in
0%
9 mi
1020 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 74°F
L: 40°F
Partly Cloudy
Sat
H: 69°F
L: 44°F
Overcast
Sun
H: 68°F
L: 48°F
Moderate rain
Mon
H: 68°F
L: 41°F
Moderate rain
Tue
H: 58°F
L: 41°F

Air Quality

AQI: 1 - Good
PM2.5: 2.75 μg/m3
PM10: 3.25 μg/m3
Carbon Monoxide: 156.85 μg/m3
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 65 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 1:12 PM
Sunset: 7:52 PM
Daylight: 13 hrs 19 mins
Moonrise: 6:21 AM
Moon Transit: 1:24 PM
Moonset: 8:42 PM
Moon Phase: New
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

8:47 PM - 11:17 PM
12:54 AM - 3:24 PM

Minor Periods

8:12 PM - 9:42 PM
5:51 AM - 7:21 AM

Action Rating: 4 out of 5

Freeze Warning issued April 16 at 12:49PM PDT until April 17 at 9:00AM PDT by NWS Eureka CA

Effective: Thu April 16, 2026, 12:49 PM
Expires: Thu April 16, 2026, 9:00 PM

* WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...Humboldt Interior, Northern Mendocino Interior, Interior Del Norte, Southern Trinity, Northern Lake, Northwestern and Central Trinity, Northeastern Trinity, and Western Lake. * WHEN...From 2 AM to 9 AM PDT Friday. * 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.


Frost Advisory issued April 16 at 12:49PM PDT until April 17 at 9:00AM PDT by NWS Eureka CA

Effective: Thu April 16, 2026, 12:49 PM
Expires: Thu April 16, 2026, 9:00 PM

* WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Del Norte, Humboldt, and Mendocino Coast, and Southern Mendocino Interior. * WHEN...From 2 AM to 9 AM PDT Friday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.


Frost Advisory issued April 16 at 8:46PM PDT until April 17 at 9:00AM PDT by NWS Eureka CA

Effective: Thu April 16, 2026, 8:46 PM
Expires: Fri April 17, 2026, 5:00 AM

* WHAT...Temperatures as low as 33 could result in frost formation. * WHERE...Del Norte, Humboldt, and Mendocino Coast, and Southern Mendocino Interior. * WHEN...From 2 AM to 9 AM PDT Friday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.


Freeze Warning issued April 16 at 8:46PM PDT until April 17 at 9:00AM PDT by NWS Eureka CA

Effective: Thu April 16, 2026, 8:46 PM
Expires: Fri April 17, 2026, 5:00 AM

* WHAT...Sub-freezing temperatures as low as 26 expected. * WHERE...Humboldt Interior, Northern Mendocino Interior, Interior Del Norte, Southern Trinity, Northern Lake, Northwestern and Central Trinity, Northeastern Trinity, and Western Lake. * WHEN...From 2 AM to 9 AM PDT Friday. * 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.
Friday, April 17, 2026

Weather Forecast

Sunny
73.9°F
40°F
57°F
36%
0 in
0%
0%
6.9 mph
1.6


Air Quality

AQI: 1 - Good
PM2.5: 3.17 μg/m3
PM10: 4.09 μg/m3
Carbon Monoxide: 176.57 μg/m3
Nitrogen Dioxide: 4.81 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 1:12 PM
Sunset: 7:52 PM
Daylight: 13 hrs 19 mins
Moonrise: 6:21 AM
Moon Transit: 1:24 PM
Moonset: 8:42 PM
Moon Phase: New
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

8:47 PM - 11:17 PM
12:54 AM - 3:24 PM

Minor Periods

8:12 PM - 9:42 PM
5:51 AM - 7:21 AM

Action Rating: 4 out of 5

Saturday, April 18, 2026

Weather Forecast

Partly Cloudy
68.7°F
44.1°F
55.2°F
67%
0 in
0%
0%
4.9 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 5.29 μg/m3
PM10: 7.13 μg/m3
Carbon Monoxide: 184.61 μg/m3
Nitrogen Dioxide: 7.05 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 73.56 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 1:11 PM
Sunset: 7:53 PM
Daylight: 13 hrs 22 mins
Moonrise: 6:55 AM
Moon Transit: 2:21 PM
Moonset: 10:02 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:51 PM - 4:21 PM

Minor Periods

9:32 PM - 11:02 PM
6:25 AM - 7:55 AM

Action Rating: 4 out of 5

Sunday, April 19, 2026

Weather Forecast

Overcast
67.5°F
48.4°F
56.9°F
59%
0 in
0%
0%
5.8 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 7.85 μg/m3
PM10: 11.48 μg/m3
Carbon Monoxide: 196.53 μg/m3
Nitrogen Dioxide: 7.76 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 64.8 μg/m3

Astronomical

Sunrise: 6:30 AM
Sun Transit: 1:11 PM
Sunset: 7:54 PM
Daylight: 13 hrs 24 mins
Moonrise: 7:35 AM
Moon Transit: 3:23 PM
Moonset: 11:20 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:53 PM - 5:23 PM

Minor Periods

12:00 AM - 12:00 AM
7:05 AM - 8:35 AM

Action Rating: 2 out of 5

Monday, April 20, 2026

Weather Forecast

Moderate rain
68.3°F
41.1°F
51.7°F
65%
0.39 in
64%
0%
11 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 3.19 μg/m3
PM10: 6.02 μg/m3
Carbon Monoxide: 144.98 μg/m3
Nitrogen Dioxide: 1.99 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 92.6 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 1:11 PM
Sunset: 7:55 PM
Daylight: 13 hrs 27 mins
Moonrise: 8:27 AM
Moon Transit: 4:27 PM
Moonset: 12:20 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:57 PM - 6:27 PM

Minor Periods

7:57 AM - 9:27 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, April 21, 2026

Weather Forecast

Moderate rain
57.5°F
40.9°F
49.2°F
91%
0.5 in
65%
0%
6.9 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 4.97 μg/m3
PM10: 7.09 μg/m3
Carbon Monoxide: 163.79 μg/m3
Nitrogen Dioxide: 3.71 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 86.62 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 1:11 PM
Sunset: 7:56 PM
Daylight: 13 hrs 29 mins
Moonrise: 9:29 AM
Moon Transit: 5:32 PM
Moonset: 12:32 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
5:02 PM - 7:32 PM

Minor Periods

8:59 AM - 10:29 AM
12:02 AM - 1:32 AM

Action Rating: 3 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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