Water Temperature of the Boise River in Caldwell, ID

Current Water Temperature

57.2°F

Measurement Time: Thursday, May 14, 2026, 7:45 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

55°F
Clear
Clear
52.3°F
53.8°F
52%
NW 9.8 mph
20.7 mph
51.2°F
31°F
0 in
0%
9 mi
1016 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 69°F
L: 47°F
Sunny
Sat
H: 63°F
L: 46°F
Sunny
Sun
H: 62°F
L: 42°F
Overcast
Mon
H: 67°F
L: 41°F
Sunny
Tue
H: 69°F
L: 43°F

Air Quality

AQI: 1 - Good
PM2.5: 2.85 μg/m3
PM10: 3.55 μg/m3
Carbon Monoxide: 128.85 μg/m3
Nitrogen Dioxide: 2.05 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 68 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 1:43 PM
Sunset: 9:05 PM
Daylight: 14 hrs 44 mins
Moonrise: 5:11 AM
Moon Transit: 12:37 AM
Moonset: 8:19 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

8:53 PM - 11:23 PM
12:07 AM - 2:37 PM

Minor Periods

7:49 PM - 9:19 PM
4:41 AM - 6:11 AM

Action Rating: 6 out of 5

Friday, May 15, 2026

Weather Forecast

Sunny
69.3°F
46.6°F
58.4°F
39%
0 in
0%
0%
10.5 mph
7.3


Air Quality

AQI: 1 - Good
PM2.5: 2.64 μg/m3
PM10: 3.33 μg/m3
Carbon Monoxide: 134.05 μg/m3
Nitrogen Dioxide: 3.11 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 86.72 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 1:43 PM
Sunset: 9:05 PM
Daylight: 14 hrs 44 mins
Moonrise: 5:11 AM
Moon Transit: 12:37 AM
Moonset: 8:19 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

8:53 PM - 11:23 PM
12:07 AM - 2:37 PM

Minor Periods

7:49 PM - 9:19 PM
4:41 AM - 6:11 AM

Action Rating: 6 out of 5

Saturday, May 16, 2026

Weather Forecast

Sunny
63.3°F
45.9°F
55°F
38%
0 in
0%
0%
19.9 mph
6.5


Air Quality

AQI: 1 - Good
PM2.5: 3.19 μg/m3
PM10: 4.1 μg/m3
Carbon Monoxide: 141.97 μg/m3
Nitrogen Dioxide: 3.8 μg/m3
Sulphur Dioxide: 1.51 μg/m3
Ozone: 86.76 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 1:43 PM
Sunset: 9:07 PM
Daylight: 14 hrs 46 mins
Moonrise: 5:45 AM
Moon Transit: 1:37 PM
Moonset: 9:43 PM
Moon Phase: New
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:07 PM - 3:37 PM

Minor Periods

9:13 PM - 10:43 PM
5:15 AM - 6:45 AM

Action Rating: 5 out of 5

Sunday, May 17, 2026

Weather Forecast

Sunny
62.2°F
41.6°F
50.4°F
43%
0 in
0%
0%
15.4 mph
6.5


Air Quality

AQI: 1 - Good
PM2.5: 1.88 μg/m3
PM10: 2.27 μg/m3
Carbon Monoxide: 132.65 μg/m3
Nitrogen Dioxide: 1.46 μg/m3
Sulphur Dioxide: 1.91 μg/m3
Ozone: 85.68 μg/m3

Astronomical

Sunrise: 6:20 AM
Sun Transit: 1:43 PM
Sunset: 9:08 PM
Daylight: 14 hrs 48 mins
Moonrise: 6:29 AM
Moon Transit: 2:41 PM
Moonset: 11:03 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:11 PM - 4:41 PM

Minor Periods

12:00 AM - 12:00 AM
5:59 AM - 7:29 AM

Action Rating: 4 out of 5

Monday, May 18, 2026

Weather Forecast

Overcast
67.2°F
41.1°F
53.5°F
40%
0 in
0%
0%
6.7 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 1.73 μg/m3
PM10: 1.82 μg/m3
Carbon Monoxide: 131.82 μg/m3
Nitrogen Dioxide: 2.24 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 79.88 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 1:43 PM
Sunset: 9:09 PM
Daylight: 14 hrs 50 mins
Moonrise: 7:25 AM
Moon Transit: 3:48 PM
Moonset: 12:03 AM
Moon Phase: New
Moon Illumination: 2.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:18 PM - 5:48 PM

Minor Periods

6:55 AM - 8:25 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, May 19, 2026

Weather Forecast

Sunny
68.8°F
43.4°F
53.5°F
41%
0 in
0%
0%
13.4 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.6 μg/m3
PM10: 2.78 μg/m3
Carbon Monoxide: 138.53 μg/m3
Nitrogen Dioxide: 5.61 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 75.54 μg/m3

Astronomical

Sunrise: 6:18 AM
Sun Transit: 1:43 PM
Sunset: 9:10 PM
Daylight: 14 hrs 52 mins
Moonrise: 8:36 AM
Moon Transit: 4:54 PM
Moonset: 12:12 AM
Moon Phase: Waxing Crescent
Moon Illumination: 7.4%

Best Times for Fishing or Hunting

Major Periods

12:08 AM - 2:38 AM
4:24 PM - 6:54 PM

Minor Periods

8:06 AM - 9:36 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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