Water Temperature of the Boise River in Caldwell, ID

Current Water Temperature

67.5°F

Measurement Time: Wednesday, September 17, 2025, 2:45 PM MDT

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

72°F
Clear
Conditions: Clear
Humidity: 41%
Feels Like: 73.7°F
Wind: W 2.2 mph
Wind Gusts: 2.8 mph
Pressure: 30.03 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Wed
H: 90°F
L: 46°F
Sunny
Thu
H: 93°F
L: 50°F
Overcast
Fri
H: 85°F
L: 60°F
Partly Cloudy
Sat
H: 87°F
L: 55°F
Sunny
Sun
H: 81°F
L: 59°F

Air Quality

AQI: 1 - Good
PM2.5: 14.8 μg/m3
PM10: 15.73 μg/m3
Carbon Monoxide: 499.5 μg/m3
Nitrogen Dioxide: 46.07 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 39 μg/m3

Astronomical

Sunrise: 7:29 AM
Sun Transit: 1:41 PM
Sunset: 7:53 PM
Daylight: 12 hrs 24 mins
Moonrise: 2:44 AM
Moon Transit: 10:37 AM
Moonset: 6:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%

Best Times for Fishing or Hunting

Major Periods

6:52 PM - 9:22 PM
10:07 AM - 12:37 AM

Minor Periods

5:48 PM - 7:18 PM
2:14 AM - 3:44 AM

Action Rating: 2 out of 5

Wednesday, September 17, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 68.8°F
Average Humidity: 45%
Chance of Rain: 0%
Wind: 13.2 mph
UV Index: 1.5

Air Quality

AQI: 1 - Good
PM2.5: 13.45 μg/m3
PM10: 15.15 μg/m3
Carbon Monoxide: 410.11 μg/m3
Nitrogen Dioxide: 24.7 μg/m3
Sulphur Dioxide: 1.46 μg/m3
Ozone: 73.36 μg/m3

Astronomical

Sunrise: 7:29 AM
Sun Transit: 1:41 PM
Sunset: 7:53 PM
Daylight: 12 hrs 24 mins
Moonrise: 2:44 AM
Moon Transit: 10:37 AM
Moonset: 6:18 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%

Best Times for Fishing or Hunting

Major Periods

6:52 PM - 9:22 PM
10:07 AM - 12:37 AM

Minor Periods

5:48 PM - 7:18 PM
2:14 AM - 3:44 AM

Action Rating: 2 out of 5

Thursday, September 18, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 70.8°F
Average Humidity: 37%
Chance of Rain: 0%
Wind: 7.6 mph
UV Index: 1.5

Air Quality

AQI: 1 - Good
PM2.5: 10.41 μg/m3
PM10: 11.41 μg/m3
Carbon Monoxide: 428.98 μg/m3
Nitrogen Dioxide: 23.53 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 74.04 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 1:40 PM
Sunset: 7:51 PM
Daylight: 12 hrs 21 mins
Moonrise: 3:58 AM
Moon Transit: 11:27 AM
Moonset: 6:43 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.8%

Best Times for Fishing or Hunting

Major Periods

7:40 PM - 10:10 PM
10:57 AM - 1:27 PM

Minor Periods

6:13 PM - 7:43 PM
3:28 AM - 4:58 AM

Action Rating: 4 out of 5

Friday, September 19, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 72.3°F
Average Humidity: 29%
Chance of Rain: 0%
Wind: 7.6 mph
UV Index: 1.2

Air Quality

AQI: 1 - Good
PM2.5: 9.26 μg/m3
PM10: 11.42 μg/m3
Carbon Monoxide: 402.41 μg/m3
Nitrogen Dioxide: 27.31 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 80.76 μg/m3

Astronomical

Sunrise: 7:31 AM
Sun Transit: 1:40 PM
Sunset: 7:49 PM
Daylight: 12 hrs 18 mins
Moonrise: 5:09 AM
Moon Transit: 12:13 AM
Moonset: 7:04 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.8%

Best Times for Fishing or Hunting

Major Periods

8:25 PM - 10:55 PM
11:43 AM - 2:13 PM

Minor Periods

6:34 PM - 8:04 PM
4:39 AM - 6:09 AM

Action Rating: 3 out of 5

Saturday, September 20, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 70.5°F
Average Humidity: 47%
Chance of Rain: 0%
Wind: 14.1 mph
UV Index: 1

Air Quality

AQI: 1 - Good
PM2.5: 8.77 μg/m3
PM10: 12.5 μg/m3
Carbon Monoxide: 499.57 μg/m3
Nitrogen Dioxide: 17.12 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 85.44 μg/m3

Astronomical

Sunrise: 7:32 AM
Sun Transit: 1:40 PM
Sunset: 7:47 PM
Daylight: 12 hrs 15 mins
Moonrise: 6:18 AM
Moon Transit: 12:56 AM
Moonset: 7:22 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

9:07 PM - 11:37 PM
12:26 AM - 2:56 PM

Minor Periods

6:52 PM - 8:22 PM
5:48 AM - 7:18 AM

Action Rating: 3 out of 5

Sunday, September 21, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 69°F
Average Humidity: 32%
Chance of Rain: 0%
Wind: 19 mph
UV Index: 1.2

Air Quality

AQI: 1 - Good
PM2.5: 9.29 μg/m3
PM10: 11.27 μg/m3
Carbon Monoxide: 343.67 μg/m3
Nitrogen Dioxide: 18.76 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 68.31 μg/m3

Astronomical

Sunrise: 7:33 AM
Sun Transit: 1:39 PM
Sunset: 7:45 PM
Daylight: 12 hrs 12 mins
Moonrise: 7:24 AM
Moon Transit: 1:37 PM
Moonset: 7:39 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

7:09 PM - 8:39 PM
6:54 AM - 8:24 AM

Action Rating: 3 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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