Water Temperature of the Boise River in Caldwell, ID

Current Water Temperature

44.6°F

Measurement Time: Tuesday, February 17, 2026, 3:45 PM MST

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

37.9°F
Partly cloudy
Partly cloudy
32.5°F
33.5°F
70%
SSE 7.2 mph
13.4 mph
27.1°F
27.6°F
0 in
75%
9 mi
998 mbar
0

Five Day Weather Forecast

Moderate rain
Tue
H: 48°F
L: 32°F
Patchy rain nearby
Wed
H: 42°F
L: 31°F
Sunny
Thu
H: 43°F
L: 24°F
Partly Cloudy
Fri
H: 44°F
L: 27°F
Sunny
Sat
H: 46°F
L: 27°F

Air Quality

AQI: 1 - Good
PM2.5: 3.25 μg/m3
PM10: 3.95 μg/m3
Carbon Monoxide: 202.85 μg/m3
Nitrogen Dioxide: 5.25 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 67 μg/m3

Astronomical

Sunrise: 7:42 AM
Sun Transit: 1:00 PM
Sunset: 6:20 PM
Daylight: 10 hrs 38 mins
Moonrise: 7:55 AM
Moon Transit: 1:17 PM
Moonset: 6:51 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:47 AM - 3:17 PM

Minor Periods

6:21 PM - 7:51 PM
7:25 AM - 8:55 AM

Action Rating: 5 out of 5

Tuesday, February 17, 2026

Weather Forecast

Moderate rain
48.4°F
32.2°F
38.9°F
73%
0.2 in
86%
0%
20.4 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 4.31 μg/m3
PM10: 4.91 μg/m3
Carbon Monoxide: 238.69 μg/m3
Nitrogen Dioxide: 5.15 μg/m3
Sulphur Dioxide: 2.08 μg/m3
Ozone: 77.52 μg/m3

Astronomical

Sunrise: 7:42 AM
Sun Transit: 1:00 PM
Sunset: 6:20 PM
Daylight: 10 hrs 38 mins
Moonrise: 7:55 AM
Moon Transit: 1:17 PM
Moonset: 6:51 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:47 AM - 3:17 PM

Minor Periods

6:21 PM - 7:51 PM
7:25 AM - 8:55 AM

Action Rating: 5 out of 5

Wednesday, February 18, 2026

Weather Forecast

Patchy rain nearby
42.1°F
31.3°F
34.2°F
71%
0.01 in
79%
2%
20.8 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 3.81 μg/m3
PM10: 4.8 μg/m3
Carbon Monoxide: 205.53 μg/m3
Nitrogen Dioxide: 5.52 μg/m3
Sulphur Dioxide: 1.81 μg/m3
Ozone: 77.96 μg/m3

Astronomical

Sunrise: 7:40 AM
Sun Transit: 1:00 PM
Sunset: 6:22 PM
Daylight: 10 hrs 41 mins
Moonrise: 8:16 AM
Moon Transit: 12:00 AM
Moonset: 8:03 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

7:33 PM - 9:03 PM
7:46 AM - 9:16 AM

Action Rating: 4 out of 5

Thursday, February 19, 2026

Weather Forecast

Sunny
42.8°F
24.3°F
33.2°F
61%
0 in
0%
0%
4.9 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 3.99 μg/m3
PM10: 5.05 μg/m3
Carbon Monoxide: 202.81 μg/m3
Nitrogen Dioxide: 4.37 μg/m3
Sulphur Dioxide: 1.54 μg/m3
Ozone: 82.68 μg/m3

Astronomical

Sunrise: 7:39 AM
Sun Transit: 1:00 PM
Sunset: 6:23 PM
Daylight: 10 hrs 44 mins
Moonrise: 8:36 AM
Moon Transit: 2:07 PM
Moonset: 9:16 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

1:37 PM - 4:07 PM
1:37 PM - 4:07 PM

Minor Periods

8:46 PM - 10:16 PM
8:06 AM - 9:36 AM

Action Rating: 3 out of 5

Friday, February 20, 2026

Weather Forecast

Partly Cloudy
44.2°F
26.6°F
32.4°F
62%
0 in
0%
0%
6.9 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 2.95 μg/m3
PM10: 3.54 μg/m3
Carbon Monoxide: 178.14 μg/m3
Nitrogen Dioxide: 3.61 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 89.44 μg/m3

Astronomical

Sunrise: 7:37 AM
Sun Transit: 1:00 PM
Sunset: 6:24 PM
Daylight: 10 hrs 47 mins
Moonrise: 8:56 AM
Moon Transit: 3:35 PM
Moonset: 10:31 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:05 PM - 5:35 PM

Minor Periods

10:01 PM - 11:31 PM
8:26 AM - 9:56 AM

Action Rating: 2 out of 5

Saturday, February 21, 2026

Weather Forecast

Sunny
46°F
27°F
36°F
46%
0 in
0%
0%
21.9 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 4.47 μg/m3
PM10: 5.15 μg/m3
Carbon Monoxide: 214.39 μg/m3
Nitrogen Dioxide: 8.6 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 77.15 μg/m3

Astronomical

Sunrise: 7:36 AM
Sun Transit: 1:00 PM
Sunset: 6:26 PM
Daylight: 10 hrs 50 mins
Moonrise: 9:18 AM
Moon Transit: 4:24 PM
Moonset: 11:47 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:54 PM - 6:24 PM

Minor Periods

12:00 AM - 12:00 AM
8:48 AM - 10:18 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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