Water Temperature of the Boise River in Caldwell, ID

Current Water Temperature

64.2°F

Measurement Time: Wednesday, September 9, 2026, 10:45 PM MDT

Temperature Locations

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Local Points of Interest

Rotary Pond Park

Boise River

Station Name: BOISE RIVER AT CALDWELL, ID
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 2,343 feet

Nearest Address:
W Chicago Street
Caldwell, ID 83605-5407
Canyon County

GPS Coordinates: 43.67735278, -116.7011306

Nearby Water Temperatures

Boise River, Caldwell, ID (0.2 mi)
Boise River, Parma, ID (15.4 mi)
Snake River, Nyssa, OR (19.6 mi)
Snake River, King Hill, ID (88.6 mi)
Owyhee River, Bruneau, ID (98.2 mi)
Yankee Fork Salmon River, Sunbeam, ID (106.3 mi)
Meadow Creek, Stibnite, ID (106.8 mi)
East Fork South Fork Salmon River, Stibnite, ID (108.6 mi)
Sugar Creek, Yellow Pine, ID (110.1 mi)
East Fork Wallowa River, Joseph, OR (112.9 mi)
Box Canyon Springs, Wendell, ID (116.4 mi)
Briggs Spring, Buhl, ID (117.9 mi)
Snake River, Buhl, ID (122.2 mi)
Niagara Springs, Buhl, ID (123.8 mi)
Donner und Blitzen River, Frenchglen, OR (125.1 mi)

Weather for Caldwell, Idaho

Current Weather

52°F
Mostly Clear
Mostly Clear
77%
ESE 1 mph
45°F

Weather Forecast

Mostly Clear
Overnight
50°F - Mostly Clear
Mostly Sunny
Thursday
87°F - Mostly Sunny
Mostly Clear
Thursday Night
54°F - Mostly Clear
Sunny
Friday
81°F - Sunny
Mostly Clear
Friday Night
51°F - Mostly Clear
Sunny
Saturday
84°F - Sunny
Chance Showers And Thunderstorms
Saturday Night
49°F - Chance Showers And Thunderstorms
Mostly Sunny
Sunday
67°F - Mostly Sunny
Mostly Clear then Areas Of Fog
Sunday Night
41°F - Mostly Clear then Areas Of Fog
Areas Of Fog then Sunny
Monday
68°F - Areas Of Fog then Sunny
Mostly Clear then Areas Of Fog
Monday Night
42°F - Mostly Clear then Areas Of Fog
Areas Of Fog then Sunny
Tuesday
71°F - Areas Of Fog then Sunny
Mostly Clear then Patchy Fog
Tuesday Night
45°F - Mostly Clear then Patchy Fog
Patchy Fog then Sunny
Wednesday
75°F - Patchy Fog then Sunny

Astronomical

Sunrise: 7:20 AM
Sun Transit: 1:43 PM
Sunset: 8:06 PM
Daylight: 12 hrs 45 mins
Moonrise: 6:47 AM
Moon Transit: 1:25 PM
Moonset: 7:50 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:55 AM - 3:25 PM

Minor Periods

7:20 PM - 8:50 PM
6:17 AM - 7:47 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 1:43 PM
Sunset: 8:06 PM
Daylight: 12 hrs 45 mins
Moonrise: 6:47 AM
Moon Transit: 1:25 PM
Moonset: 7:50 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:55 AM - 3:25 PM

Minor Periods

7:20 PM - 8:50 PM
6:17 AM - 7:47 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 1:43 PM
Sunset: 8:06 PM
Daylight: 12 hrs 45 mins
Moonrise: 6:47 AM
Moon Transit: 1:25 PM
Moonset: 7:50 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:55 AM - 3:25 PM

Minor Periods

7:20 PM - 8:50 PM
6:17 AM - 7:47 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 1:43 PM
Sunset: 8:06 PM
Daylight: 12 hrs 45 mins
Moonrise: 6:47 AM
Moon Transit: 1:25 PM
Moonset: 7:50 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:55 AM - 3:25 PM

Minor Periods

7:20 PM - 8:50 PM
6:17 AM - 7:47 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 1:43 PM
Sunset: 8:04 PM
Daylight: 12 hrs 42 mins
Moonrise: 8:01 AM
Moon Transit: 2:11 PM
Moonset: 8:11 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:41 PM - 4:11 PM

Minor Periods

7:41 PM - 9:11 PM
7:31 AM - 9:01 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 1:43 PM
Sunset: 8:04 PM
Daylight: 12 hrs 42 mins
Moonrise: 8:01 AM
Moon Transit: 2:11 PM
Moonset: 8:11 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:41 PM - 4:11 PM

Minor Periods

7:41 PM - 9:11 PM
7:31 AM - 9:01 AM

Action Rating: 5 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 1:42 PM
Sunset: 8:02 PM
Daylight: 12 hrs 39 mins
Moonrise: 9:12 AM
Moon Transit: 2:56 PM
Moonset: 8:31 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:26 PM - 4:56 PM

Minor Periods

8:01 PM - 9:31 PM
8:42 AM - 10:12 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 1:42 PM
Sunset: 8:02 PM
Daylight: 12 hrs 39 mins
Moonrise: 9:12 AM
Moon Transit: 2:56 PM
Moonset: 8:31 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:26 PM - 4:56 PM

Minor Periods

8:01 PM - 9:31 PM
8:42 AM - 10:12 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 1:42 PM
Sunset: 8:00 PM
Daylight: 12 hrs 37 mins
Moonrise: 10:22 AM
Moon Transit: 3:42 PM
Moonset: 8:52 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:12 PM - 5:42 PM

Minor Periods

8:22 PM - 9:52 PM
9:52 AM - 11:22 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 1:42 PM
Sunset: 8:00 PM
Daylight: 12 hrs 37 mins
Moonrise: 10:22 AM
Moon Transit: 3:42 PM
Moonset: 8:52 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:12 PM - 5:42 PM

Minor Periods

8:22 PM - 9:52 PM
9:52 AM - 11:22 AM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 1:42 PM
Sunset: 7:59 PM
Daylight: 12 hrs 34 mins
Moonrise: 11:31 AM
Moon Transit: 4:28 PM
Moonset: 9:16 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:58 PM - 6:28 PM

Minor Periods

8:46 PM - 10:16 PM
11:01 AM - 12:31 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 1:42 PM
Sunset: 7:59 PM
Daylight: 12 hrs 34 mins
Moonrise: 11:31 AM
Moon Transit: 4:28 PM
Moonset: 9:16 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:58 PM - 6:28 PM

Minor Periods

8:46 PM - 10:16 PM
11:01 AM - 12:31 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 1:41 PM
Sunset: 7:57 PM
Daylight: 12 hrs 31 mins
Moonrise: 12:40 AM
Moon Transit: 5:15 PM
Moonset: 9:45 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

12:41 AM - 3:11 AM
4:45 PM - 7:15 PM

Minor Periods

9:15 PM - 10:45 PM
12:10 AM - 1:40 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 1:41 PM
Sunset: 7:57 PM
Daylight: 12 hrs 31 mins
Moonrise: 12:40 AM
Moon Transit: 5:15 PM
Moonset: 9:45 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

12:41 AM - 3:11 AM
4:45 PM - 7:15 PM

Minor Periods

9:15 PM - 10:45 PM
12:10 AM - 1:40 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 1:41 PM
Sunset: 7:55 PM
Daylight: 12 hrs 28 mins
Moonrise: 1:46 PM
Moon Transit: 6:05 PM
Moonset: 10:20 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

1:30 AM - 4:00 AM
5:35 PM - 8:05 PM

Minor Periods

9:50 PM - 11:20 PM
1:16 PM - 2:46 PM

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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