Water Temperature of the Boise River in Caldwell, ID

Current Water Temperature

64.8°F

Measurement Time: Wednesday, September 2, 2026, 11:45 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

56°F
Chance Rain Showers
Chance Rain Showers
99%
ESE 6 mph
56°F

Weather Forecast

Chance Rain Showers
Overnight
54°F - Chance Rain Showers
Chance Rain Showers
Thursday
66°F - Chance Rain Showers
Showers And Thunderstorms
Thursday Night
49°F - Showers And Thunderstorms
Areas Of Fog then Partly Sunny
Friday
67°F - Areas Of Fog then Partly Sunny
Areas Of Fog
Friday Night
47°F - Areas Of Fog
Areas Of Fog then Sunny
Saturday
71°F - Areas Of Fog then Sunny
Partly Cloudy then Areas Of Fog
Saturday Night
44°F - Partly Cloudy then Areas Of Fog
Areas Of Fog then Mostly Sunny
Sunday
73°F - Areas Of Fog then Mostly Sunny
Chance Showers And Thunderstorms
Sunday Night
46°F - Chance Showers And Thunderstorms
Chance Rain Showers then Slight Chance Showers And Thunderstorms
Labor Day
69°F - Chance Rain Showers then Slight Chance Showers And Thunderstorms
Areas Of Fog
Monday Night
43°F - Areas Of Fog
Areas Of Fog then Mostly Sunny
Tuesday
74°F - Areas Of Fog then Mostly Sunny
Partly Cloudy then Areas Of Fog
Tuesday Night
46°F - Partly Cloudy then Areas Of Fog
Areas Of Fog then Mostly Sunny
Wednesday
77°F - Areas Of Fog then Mostly Sunny

Astronomical

Sunrise: 7:13 AM
Sun Transit: 1:46 PM
Sunset: 8:19 PM
Daylight: 13 hrs 6 mins
Moonrise: 11:29 PM
Moon Transit: 6:44 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

6:14 AM - 8:44 AM
3:02 PM - 5:32 PM

Minor Periods

12:00 AM - 12:00 AM
2:26 PM - 3:56 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: 7:13 AM
Sun Transit: 1:46 PM
Sunset: 8:19 PM
Daylight: 13 hrs 6 mins
Moonrise: 11:29 PM
Moon Transit: 6:44 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

6:14 AM - 8:44 AM
3:02 PM - 5:32 PM

Minor Periods

12:00 AM - 12:00 AM
2:26 PM - 3:56 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: 7:13 AM
Sun Transit: 1:46 PM
Sunset: 8:19 PM
Daylight: 13 hrs 6 mins
Moonrise: 11:29 PM
Moon Transit: 6:44 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

6:14 AM - 8:44 AM
3:02 PM - 5:32 PM

Minor Periods

12:00 AM - 12:00 AM
2:26 PM - 3:56 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: 7:13 AM
Sun Transit: 1:46 PM
Sunset: 8:19 PM
Daylight: 13 hrs 6 mins
Moonrise: 11:29 PM
Moon Transit: 6:44 AM
Moonset: 2:56 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

6:14 AM - 8:44 AM
3:02 PM - 5:32 PM

Minor Periods

12:00 AM - 12:00 AM
2:26 PM - 3:56 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: 7:14 AM
Sun Transit: 1:45 PM
Sunset: 8:17 PM
Daylight: 13 hrs 3 mins
Moonrise: 12:29 AM
Moon Transit: 7:45 AM
Moonset: 4:08 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

7:15 AM - 9:45 AM
4:03 PM - 6:33 PM

Minor Periods

3:38 PM - 5:08 PM
12:00 AM - 12:00 AM

Action Rating: 3 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: 7:14 AM
Sun Transit: 1:45 PM
Sunset: 8:17 PM
Daylight: 13 hrs 3 mins
Moonrise: 12:29 AM
Moon Transit: 7:45 AM
Moonset: 4:08 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

7:15 AM - 9:45 AM
4:03 PM - 6:33 PM

Minor Periods

3:38 PM - 5:08 PM
12:00 AM - 12:00 AM

Action Rating: 3 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: 7:15 AM
Sun Transit: 1:45 PM
Sunset: 8:15 PM
Daylight: 13 hrs mins
Moonrise: 12:26 AM
Moon Transit: 8:48 AM
Moonset: 5:08 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

8:18 AM - 10:48 AM
5:07 PM - 7:37 PM

Minor Periods

4:38 PM - 6:08 PM
12:00 AM - 12:00 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: 7:15 AM
Sun Transit: 1:45 PM
Sunset: 8:15 PM
Daylight: 13 hrs mins
Moonrise: 12:26 AM
Moon Transit: 8:48 AM
Moonset: 5:08 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

8:18 AM - 10:48 AM
5:07 PM - 7:37 PM

Minor Periods

4:38 PM - 6:08 PM
12:00 AM - 12:00 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: 7:16 AM
Sun Transit: 1:45 PM
Sunset: 8:13 PM
Daylight: 12 hrs 57 mins
Moonrise: 1:34 AM
Moon Transit: 9:50 AM
Moonset: 5:57 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

6:08 PM - 8:38 PM
9:20 AM - 11:50 AM

Minor Periods

5:27 PM - 6:57 PM
1:04 AM - 2:34 AM

Action Rating: 3 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: 7:16 AM
Sun Transit: 1:45 PM
Sunset: 8:13 PM
Daylight: 12 hrs 57 mins
Moonrise: 1:34 AM
Moon Transit: 9:50 AM
Moonset: 5:57 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

6:08 PM - 8:38 PM
9:20 AM - 11:50 AM

Minor Periods

5:27 PM - 6:57 PM
1:04 AM - 2:34 AM

Action Rating: 3 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: 7:17 AM
Sun Transit: 1:44 PM
Sunset: 8:11 PM
Daylight: 12 hrs 54 mins
Moonrise: 2:52 AM
Moon Transit: 10:50 AM
Moonset: 6:35 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

7:07 PM - 9:37 PM
10:20 AM - 12:50 AM

Minor Periods

6:05 PM - 7:35 PM
2:22 AM - 3:52 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: 7:17 AM
Sun Transit: 1:44 PM
Sunset: 8:11 PM
Daylight: 12 hrs 54 mins
Moonrise: 2:52 AM
Moon Transit: 10:50 AM
Moonset: 6:35 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

7:07 PM - 9:37 PM
10:20 AM - 12:50 AM

Minor Periods

6:05 PM - 7:35 PM
2:22 AM - 3:52 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: 7:18 AM
Sun Transit: 1:44 PM
Sunset: 8:10 PM
Daylight: 12 hrs 51 mins
Moonrise: 4:12 AM
Moon Transit: 11:46 AM
Moonset: 7:05 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

8:01 PM - 10:31 PM
11:16 AM - 1:46 PM

Minor Periods

6:35 PM - 8:05 PM
3:42 AM - 5:12 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: 7:18 AM
Sun Transit: 1:44 PM
Sunset: 8:10 PM
Daylight: 12 hrs 51 mins
Moonrise: 4:12 AM
Moon Transit: 11:46 AM
Moonset: 7:05 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.4%

Best Times for Fishing or Hunting

Major Periods

8:01 PM - 10:31 PM
11:16 AM - 1:46 PM

Minor Periods

6:35 PM - 8:05 PM
3:42 AM - 5:12 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: 7:19 AM
Sun Transit: 1:44 PM
Sunset: 8:08 PM
Daylight: 12 hrs 48 mins
Moonrise: 5:31 AM
Moon Transit: 12:37 AM
Moonset: 7:29 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

8:51 PM - 11:21 PM
12:07 AM - 2:37 PM

Minor Periods

6:59 PM - 8:29 PM
5:01 AM - 6:31 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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