Water Temperature of the Boise River in Caldwell, ID

Current Water Temperature

47.5°F

Measurement Time: Tuesday, January 6, 2026, 8:45 AM 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

48°F
Overcast
Overcast
45°F
48.9°F
77%
WSW 6.5 mph
9.5 mph
46.7°F
43.4°F
0 in
100%
9 mi
1014 mbar
0.2

Five Day Weather Forecast

Partly Cloudy
Tue
H: 54°F
L: 36°F
Overcast
Wed
H: 46°F
L: 34°F
Partly Cloudy
Thu
H: 39°F
L: 29°F
Partly Cloudy
Fri
H: 43°F
L: 33°F
Sunny
Sat
H: 41°F
L: 31°F

Air Quality

AQI: 1 - Good
PM2.5: 3.45 μg/m3
PM10: 3.65 μg/m3
Carbon Monoxide: 238.85 μg/m3
Nitrogen Dioxide: 8.45 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 58 μg/m3

Astronomical

Sunrise: 8:20 AM
Sun Transit: 12:52 AM
Sunset: 5:25 PM
Daylight: 9 hrs 5 mins
Moonrise: 9:38 PM
Moon Transit: 3:39 AM
Moonset: 10:40 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

3:09 AM - 5:39 AM
11:52 AM - 2:22 PM

Minor Periods

9:08 PM - 10:38 PM
10:10 AM - 11:40 AM

Action Rating: 2 out of 5

Winter Weather Advisory issued January 6 at 1:49AM MST until January 7 at 11:00PM MST by NWS Boise ID

Effective: Tue January 6, 2026, 1:49 AM
Expires: Tue January 6, 2026, 4:00 PM

* WHAT...Snow expected. Total snow accumulations of 3 to 7 inches in valleys, 10-20 inches above 6000 feet. Gusty winds up to 35 mph will produce localized blowing and drifting snow. * WHERE...West Central Mountains. * WHEN...From 2 PM this afternoon to 11 PM MST Wednesday. * IMPACTS...Roads will likely become slick and hazardous. Travel could be very difficult.

Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.
Tuesday, January 6, 2026

Weather Forecast

Partly Cloudy
53.8°F
36.3°F
43°F
79%
0 in
0%
0%
8.7 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 3.03 μg/m3
PM10: 3.26 μg/m3
Carbon Monoxide: 296.25 μg/m3
Nitrogen Dioxide: 7.99 μg/m3
Sulphur Dioxide: 1.4 μg/m3
Ozone: 48.48 μg/m3

Astronomical

Sunrise: 8:20 AM
Sun Transit: 12:52 AM
Sunset: 5:25 PM
Daylight: 9 hrs 5 mins
Moonrise: 9:38 PM
Moon Transit: 3:39 AM
Moonset: 10:40 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

3:09 AM - 5:39 AM
11:52 AM - 2:22 PM

Minor Periods

9:08 PM - 10:38 PM
10:10 AM - 11:40 AM

Action Rating: 2 out of 5

Wednesday, January 7, 2026

Weather Forecast

Overcast
45.7°F
34°F
41.7°F
72%
0 in
0%
0%
17 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 2.25 μg/m3
PM10: 2.51 μg/m3
Carbon Monoxide: 216.29 μg/m3
Nitrogen Dioxide: 4.45 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 69.32 μg/m3

Astronomical

Sunrise: 8:20 AM
Sun Transit: 12:53 AM
Sunset: 5:26 PM
Daylight: 9 hrs 6 mins
Moonrise: 10:48 PM
Moon Transit: 4:25 AM
Moonset: 11:00 AM
Moon Phase: Waning Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

3:55 AM - 6:25 AM
12:37 AM - 3:07 PM

Minor Periods

10:18 PM - 11:48 PM
10:30 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, January 8, 2026

Weather Forecast

Partly Cloudy
39°F
28.9°F
34°F
61%
0 in
0%
0%
19.5 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 2.47 μg/m3
PM10: 3.06 μg/m3
Carbon Monoxide: 207.85 μg/m3
Nitrogen Dioxide: 3.64 μg/m3
Sulphur Dioxide: 1.71 μg/m3
Ozone: 73.04 μg/m3

Astronomical

Sunrise: 8:20 AM
Sun Transit: 12:53 AM
Sunset: 5:27 PM
Daylight: 9 hrs 7 mins
Moonrise: 11:55 PM
Moon Transit: 5:09 AM
Moonset: 11:19 AM
Moon Phase: Waning Gibbous
Moon Illumination: 68.7%

Best Times for Fishing or Hunting

Major Periods

4:39 AM - 7:09 AM
1:20 PM - 3:50 PM

Minor Periods

12:00 AM - 12:00 AM
10:49 AM - 12:19 AM

Action Rating: 2 out of 5

Friday, January 9, 2026

Weather Forecast

Partly Cloudy
43°F
32.6°F
37.2°F
63%
0 in
0%
0%
17.9 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 2.73 μg/m3
PM10: 3.06 μg/m3
Carbon Monoxide: 283.51 μg/m3
Nitrogen Dioxide: 4.47 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 66.04 μg/m3

Astronomical

Sunrise: 8:20 AM
Sun Transit: 12:54 AM
Sunset: 5:29 PM
Daylight: 9 hrs 9 mins
Moonrise: 12:55 AM
Moon Transit: 5:51 AM
Moonset: 11:36 AM
Moon Phase: Waning Gibbous
Moon Illumination: 57.8%

Best Times for Fishing or Hunting

Major Periods

5:21 AM - 7:51 AM
2:02 PM - 4:32 PM

Minor Periods

11:06 AM - 12:36 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Saturday, January 10, 2026

Weather Forecast

Sunny
41.3°F
30.8°F
34.6°F
69%
0 in
0%
0%
5.4 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 5.83 μg/m3
PM10: 6.81 μg/m3
Carbon Monoxide: 233.54 μg/m3
Nitrogen Dioxide: 11.4 μg/m3
Sulphur Dioxide: 1.93 μg/m3
Ozone: 51.62 μg/m3

Astronomical

Sunrise: 8:20 AM
Sun Transit: 12:54 AM
Sunset: 5:30 PM
Daylight: 9 hrs 10 mins
Moonrise: 1:00 AM
Moon Transit: 6:32 AM
Moonset: 11:55 AM
Moon Phase: Last Quarter
Moon Illumination: 46.5%

Best Times for Fishing or Hunting

Major Periods

6:02 AM - 8:32 AM
2:43 PM - 5:13 PM

Minor Periods

11:25 AM - 12:55 AM
12:30 AM - 2:00 AM

Action Rating: 4 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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