Water Temperature of the Boise River in Caldwell, ID

Current Water Temperature

55.0°F

Measurement Time: Sunday, May 10, 2026, 12:45 AM 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

46°F
Sunny
Sunny
45.5°F
51°F
73%
E 2.7 mph
5.6 mph
49.4°F
26.9°F
0 in
0%
9 mi
1019 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 94°F
L: 48°F
Sunny
Mon
H: 80°F
L: 54°F
Sunny
Tue
H: 91°F
L: 57°F
Patchy rain nearby
Wed
H: 93°F
L: 61°F
Patchy rain nearby
Thu
H: 85°F
L: 57°F

Air Quality

AQI: 1 - Good
PM2.5: 3.55 μg/m3
PM10: 9.45 μg/m3
Carbon Monoxide: 162.85 μg/m3
Nitrogen Dioxide: 1.75 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 129 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 1:43 PM
Sunset: 9:00 PM
Daylight: 14 hrs 33 mins
Moonrise: 3:22 AM
Moon Transit: 8:36 AM
Moonset: 2:01 PM
Moon Phase: Last Quarter
Moon Illumination: 26.2%

Best Times for Fishing or Hunting

Major Periods

8:06 AM - 10:36 AM
4:48 PM - 7:18 PM

Minor Periods

1:31 PM - 3:01 PM
2:52 AM - 4:22 AM

Action Rating: 2 out of 5

Sunday, May 10, 2026

Weather Forecast

Sunny
93.7°F
47.5°F
69.4°F
25%
0 in
0%
0%
15 mph
8.6


Air Quality

AQI: 1 - Good
PM2.5: 4.32 μg/m3
PM10: 8.41 μg/m3
Carbon Monoxide: 196.97 μg/m3
Nitrogen Dioxide: 9.44 μg/m3
Sulphur Dioxide: 1.58 μg/m3
Ozone: 91.64 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 1:43 PM
Sunset: 9:00 PM
Daylight: 14 hrs 33 mins
Moonrise: 3:22 AM
Moon Transit: 8:36 AM
Moonset: 2:01 PM
Moon Phase: Last Quarter
Moon Illumination: 26.2%

Best Times for Fishing or Hunting

Major Periods

8:06 AM - 10:36 AM
4:48 PM - 7:18 PM

Minor Periods

1:31 PM - 3:01 PM
2:52 AM - 4:22 AM

Action Rating: 2 out of 5

Monday, May 11, 2026

Weather Forecast

Sunny
80.2°F
53.6°F
67°F
40%
0 in
0%
0%
9.6 mph
8.1


Air Quality

AQI: 1 - Good
PM2.5: 3.97 μg/m3
PM10: 6.59 μg/m3
Carbon Monoxide: 163.93 μg/m3
Nitrogen Dioxide: 3.61 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 111 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:43 PM
Sunset: 9:01 PM
Daylight: 14 hrs 35 mins
Moonrise: 3:42 AM
Moon Transit: 9:20 AM
Moonset: 3:10 PM
Moon Phase: Last Quarter
Moon Illumination: 16.9%

Best Times for Fishing or Hunting

Major Periods

8:50 AM - 11:20 AM
12:00 AM - 12:00 AM

Minor Periods

2:40 PM - 4:10 PM
3:12 AM - 4:42 AM

Action Rating: 2 out of 5

Tuesday, May 12, 2026

Weather Forecast

Sunny
91.4°F
56.8°F
73.1°F
35%
0 in
0%
0%
10.3 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 4.41 μg/m3
PM10: 6.05 μg/m3
Carbon Monoxide: 213.77 μg/m3
Nitrogen Dioxide: 10.84 μg/m3
Sulphur Dioxide: 1.68 μg/m3
Ozone: 93.68 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 1:43 PM
Sunset: 9:02 PM
Daylight: 14 hrs 37 mins
Moonrise: 4:02 AM
Moon Transit: 7:41 PM
Moonset: 4:22 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.3%

Best Times for Fishing or Hunting

Major Periods

7:11 PM - 9:41 PM
7:11 PM - 9:41 PM

Minor Periods

3:52 PM - 5:22 PM
3:32 AM - 5:02 AM

Action Rating: 2 out of 5

Wednesday, May 13, 2026

Weather Forecast

Patchy rain nearby
93.1°F
60.7°F
75.1°F
40%
0.06 in
75%
0%
15.4 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 4.33 μg/m3
PM10: 6.67 μg/m3
Carbon Monoxide: 170.6 μg/m3
Nitrogen Dioxide: 6.38 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 99.8 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 1:43 PM
Sunset: 9:03 PM
Daylight: 14 hrs 39 mins
Moonrise: 4:23 AM
Moon Transit: 12:00 AM
Moonset: 5:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:05 PM - 9:35 PM

Minor Periods

5:07 PM - 6:37 PM
3:53 AM - 5:23 AM

Action Rating: 2 out of 5

Thursday, May 14, 2026

Weather Forecast

Patchy rain nearby
84.6°F
56.7°F
64.9°F
63%
0.07 in
71%
0%
15.2 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 5.89 μg/m3
PM10: 8.55 μg/m3
Carbon Monoxide: 147.95 μg/m3
Nitrogen Dioxide: 4.36 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 96.08 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:43 PM
Sunset: 9:04 PM
Daylight: 14 hrs 42 mins
Moonrise: 4:45 AM
Moon Transit: 11:42 AM
Moonset: 6:56 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

7:57 PM - 10:27 PM
11:12 AM - 1:42 PM

Minor Periods

6:26 PM - 7:56 PM
4:15 AM - 5:45 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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