Water Temperature of the Boise River in Caldwell, ID

Current Water Temperature

50.2°F

Measurement Time: Thursday, November 20, 2025, 11:45 PM MST

Temperature Locations

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Local Points of Interest

Rotary Pond Park

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Boise River

Station Name: BOISE RIVER AT CALDWELL, ID
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 2,343 feet / 714 meters

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

32.4°F
Mist
Conditions: Mist
Humidity: 100%
Feels Like: 30.5°F
Wind: NNW 2.5 mph
Wind Gusts: 5.2 mph
Pressure: 30.18 in
Precipitation: 0 in
Cloud Cover: 50%
Visibility: 2 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Fri
H: 54°F
L: 31°F
Mist
Sat
H: 44°F
L: 28°F
Mist
Sun
H: 41°F
L: 28°F
Sunny
Mon
H: 47°F
L: 33°F
Sunny
Tue
H: 41°F
L: 30°F

Air Quality

AQI: 1 - Good
PM2.5: 7.75 μg/m3
PM10: 7.85 μg/m3
Carbon Monoxide: 250.85 μg/m3
Nitrogen Dioxide: 3.55 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 62 μg/m3

Astronomical

Sunrise: 7:49 AM
Sun Transit: 12:32 AM
Sunset: 5:16 PM
Daylight: 9 hrs 27 mins
Moonrise: 9:35 AM
Moon Transit: 1:43 PM
Moonset: 5:49 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:13 PM - 3:43 PM

Minor Periods

5:19 PM - 6:49 PM
9:05 AM - 10:35 AM

Action Rating: 4 out of 5

Dense Fog Advisory issued November 20 at 10:00PM MST until November 21 at 10:00AM MST by NWS Boise ID

Effective: Thu November 20, 2025, 10:00 PM
Expires: Fri November 21, 2025, 10:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Lower Treasure Valley and Upper Treasure Valley in southwest Idaho. Portions of the western Magic Valley. * WHEN...Until 10 AM MST Friday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
Friday, November 21, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 40.7°F
Average Humidity: 84%
Chance of Rain: 0%
Wind: 6.7 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 15.07 μg/m3
PM10: 15.48 μg/m3
Carbon Monoxide: 334.97 μg/m3
Nitrogen Dioxide: 13.51 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 42.44 μg/m3

Astronomical

Sunrise: 7:49 AM
Sun Transit: 12:32 AM
Sunset: 5:16 PM
Daylight: 9 hrs 27 mins
Moonrise: 9:35 AM
Moon Transit: 1:43 PM
Moonset: 5:49 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:13 PM - 3:43 PM

Minor Periods

5:19 PM - 6:49 PM
9:05 AM - 10:35 AM

Action Rating: 4 out of 5

Saturday, November 22, 2025

Weather Forecast

Conditions: Mist
Average Temperature: 36.4°F
Average Humidity: 88%
Chance of Rain: 0%
Wind: 5.4 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 13.09 μg/m3
PM10: 13.37 μg/m3
Carbon Monoxide: 363.09 μg/m3
Nitrogen Dioxide: 20.09 μg/m3
Sulphur Dioxide: 2.2 μg/m3
Ozone: 29.56 μg/m3

Astronomical

Sunrise: 7:50 AM
Sun Transit: 12:33 AM
Sunset: 5:15 PM
Daylight: 9 hrs 25 mins
Moonrise: 10:32 AM
Moon Transit: 2:35 PM
Moonset: 6:40 PM
Moon Phase: New
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:05 PM - 4:35 PM

Minor Periods

6:10 PM - 7:40 PM
10:02 AM - 11:32 AM

Action Rating: 3 out of 5

Sunday, November 23, 2025

Weather Forecast

Conditions: Mist
Average Temperature: 37.2°F
Average Humidity: 82%
Chance of Rain: 0%
Wind: 4.9 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 12.88 μg/m3
PM10: 13.03 μg/m3
Carbon Monoxide: 345.57 μg/m3
Nitrogen Dioxide: 19.65 μg/m3
Sulphur Dioxide: 2.33 μg/m3
Ozone: 26.6 μg/m3

Astronomical

Sunrise: 7:52 AM
Sun Transit: 12:33 AM
Sunset: 5:15 PM
Daylight: 9 hrs 23 mins
Moonrise: 11:19 AM
Moon Transit: 3:27 PM
Moonset: 7:38 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:57 PM - 5:27 PM

Minor Periods

7:08 PM - 8:38 PM
10:49 AM - 12:19 AM

Action Rating: 3 out of 5

Monday, November 24, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 42.8°F
Average Humidity: 50%
Chance of Rain: 0%
Wind: 15.9 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 7.25 μg/m3
PM10: 7.55 μg/m3
Carbon Monoxide: 395.17 μg/m3
Nitrogen Dioxide: 13.28 μg/m3
Sulphur Dioxide: 1.89 μg/m3
Ozone: 51.76 μg/m3

Astronomical

Sunrise: 7:53 AM
Sun Transit: 12:33 AM
Sunset: 5:14 PM
Daylight: 9 hrs 21 mins
Moonrise: 11:59 AM
Moon Transit: 4:18 PM
Moonset: 8:43 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:48 PM - 6:18 PM

Minor Periods

8:13 PM - 9:43 PM
11:29 AM - 12:59 AM

Action Rating: 2 out of 5

Tuesday, November 25, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 34.4°F
Average Humidity: 57%
Chance of Rain: 0%
Wind: 8.3 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 7.73 μg/m3
PM10: 8.4 μg/m3
Carbon Monoxide: 285.62 μg/m3
Nitrogen Dioxide: 23.51 μg/m3
Sulphur Dioxide: 2.51 μg/m3
Ozone: 40.62 μg/m3

Astronomical

Sunrise: 7:54 AM
Sun Transit: 12:33 AM
Sunset: 5:13 PM
Daylight: 9 hrs 19 mins
Moonrise: 12:31 AM
Moon Transit: 5:07 PM
Moonset: 9:51 PM
Moon Phase: Waxing Crescent
Moon Illumination: 25.0%

Best Times for Fishing or Hunting

Major Periods

12:32 AM - 3:02 AM
4:37 PM - 7:07 PM

Minor Periods

9:21 PM - 10:51 PM
12:01 AM - 1:31 PM

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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