Water Temperature of the Boise River in Caldwell, ID

Current Water Temperature

55.0°F

Measurement Time: Wednesday, April 1, 2026, 1:45 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

51.1°F
Overcast
Overcast
47.1°F
52°F
86%
SE 10.7 mph
17.7 mph
49.3°F
45.9°F
0.01 in
100%
9 mi
1001 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Wed
H: 62°F
L: 43°F
Patchy rain nearby
Thu
H: 52°F
L: 37°F
Sunny
Fri
H: 55°F
L: 30°F
Sunny
Sat
H: 69°F
L: 35°F
Sunny
Sun
H: 71°F
L: 44°F

Air Quality

AQI: 1 - Good
PM2.5: 1.55 μg/m3
PM10: 1.65 μg/m3
Carbon Monoxide: 134.85 μg/m3
Nitrogen Dioxide: 3.45 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 69 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 12:00 AM
Sunset: 8:14 PM
Daylight: 12 hrs 46 mins
Moonrise: 8:16 PM
Moon Transit: 1:13 AM
Moonset: 7:06 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:43 AM - 3:13 AM
9:24 AM - 11:54 AM

Minor Periods

7:46 PM - 9:16 PM
6:36 AM - 8:06 AM

Action Rating: 4 out of 5

Special Weather Statement issued April 1 at 6:13PM MDT by NWS Boise ID

Effective: Wed April 1, 2026, 6:13 PM
Expires: Wed April 1, 2026, 7:00 PM

At 612 PM MDT/512 PM PDT/, Doppler radar was tracking a cluster of strong thunderstorms along a line extending from near Eldorado Pass to near Cow Valley to Harper. Movement was northeast at 40 mph. HAZARD...Wind gusts up to 50 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Areas of blowing dust reducing visibility. Minor damage to outdoor objects is possible. Strong thunderstorms will be near... Huntington and Rye Valley around 540 PM PDT. Vale and Brosman Mountain around 640 PM MDT. Durkee, Farewell Bend State Park, and Lime around 550 PM PDT. Moores Hollow around 650 PM MDT.

If outdoors, consider seeking shelter inside a building.
Wednesday, April 1, 2026

Weather Forecast

Patchy rain nearby
61.7°F
43°F
51.1°F
84%
0.19 in
89%
0%
13 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 5.97 μg/m3
PM10: 6.8 μg/m3
Carbon Monoxide: 157.29 μg/m3
Nitrogen Dioxide: 6.33 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 69.4 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 12:00 AM
Sunset: 8:14 PM
Daylight: 12 hrs 46 mins
Moonrise: 8:16 PM
Moon Transit: 1:13 AM
Moonset: 7:06 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:43 AM - 3:13 AM
9:24 AM - 11:54 AM

Minor Periods

7:46 PM - 9:16 PM
6:36 AM - 8:06 AM

Action Rating: 4 out of 5

Thursday, April 2, 2026

Weather Forecast

Patchy rain nearby
51.6°F
37.4°F
43.8°F
58%
0.05 in
85%
0%
19.2 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 1.72 μg/m3
PM10: 2.16 μg/m3
Carbon Monoxide: 155.45 μg/m3
Nitrogen Dioxide: 2.62 μg/m3
Sulphur Dioxide: 1.13 μg/m3
Ozone: 85.44 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:00 AM
Sunset: 8:15 PM
Daylight: 12 hrs 49 mins
Moonrise: 9:23 PM
Moon Transit: 1:55 AM
Moonset: 7:25 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

1:25 AM - 3:55 AM
10:07 AM - 12:37 AM

Minor Periods

8:53 PM - 10:23 PM
6:55 AM - 8:25 AM

Action Rating: 3 out of 5

Friday, April 3, 2026

Weather Forecast

Sunny
54.5°F
29.5°F
42.3°F
60%
0 in
0%
0%
11 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 1.9 μg/m3
PM10: 2.28 μg/m3
Carbon Monoxide: 178.05 μg/m3
Nitrogen Dioxide: 2.87 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 84.88 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 1:50 PM
Sunset: 8:16 PM
Daylight: 12 hrs 52 mins
Moonrise: 10:30 PM
Moon Transit: 2:38 AM
Moonset: 7:45 AM
Moon Phase: Full
Moon Illumination: 96.6%

Best Times for Fishing or Hunting

Major Periods

2:08 AM - 4:38 AM
10:50 AM - 1:20 PM

Minor Periods

10:00 PM - 11:30 PM
7:15 AM - 8:45 AM

Action Rating: 4 out of 5

Saturday, April 4, 2026

Weather Forecast

Sunny
69.1°F
34.5°F
50.3°F
55%
0 in
0%
0%
4.3 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 4.22 μg/m3
PM10: 4.57 μg/m3
Carbon Monoxide: 215.03 μg/m3
Nitrogen Dioxide: 11.24 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 61.12 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 1:49 PM
Sunset: 8:18 PM
Daylight: 12 hrs 55 mins
Moonrise: 11:37 PM
Moon Transit: 3:23 AM
Moonset: 8:09 AM
Moon Phase: Full
Moon Illumination: 91.3%

Best Times for Fishing or Hunting

Major Periods

2:53 AM - 5:23 AM
11:35 AM - 2:05 PM

Minor Periods

12:00 AM - 12:00 AM
7:39 AM - 9:09 AM

Action Rating: 4 out of 5

Sunday, April 5, 2026

Weather Forecast

Sunny
70.6°F
44.1°F
56.7°F
45%
0 in
0%
0%
4.7 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 6.7 μg/m3
PM10: 7.27 μg/m3
Carbon Monoxide: 262.41 μg/m3
Nitrogen Dioxide: 19.88 μg/m3
Sulphur Dioxide: 1.83 μg/m3
Ozone: 59.31 μg/m3

Astronomical

Sunrise: 7:21 AM
Sun Transit: 1:49 PM
Sunset: 8:19 PM
Daylight: 12 hrs 58 mins
Moonrise: 12:37 AM
Moon Transit: 4:10 AM
Moonset: 8:37 AM
Moon Phase: Waning Gibbous
Moon Illumination: 83.9%

Best Times for Fishing or Hunting

Major Periods

3:40 AM - 6:10 AM
12:23 AM - 2:53 PM

Minor Periods

8:07 AM - 9:37 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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