Water Temperature of the Boise River in Caldwell, ID

Current Water Temperature

62.8°F

Measurement Time: Saturday, June 20, 2026, 7:45 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

64°F
Clear
Clear
64°F
63.2°F
73%
WNW 6.5 mph
13.6 mph
63.1°F
52.2°F
0 in
0%
9 mi
1012 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 92°F
L: 59°F
Sunny
Mon
H: 91°F
L: 56°F
Sunny
Tue
H: 97°F
L: 57°F
Patchy rain nearby
Wed
H: 97°F
L: 60°F
Sunny
Thu
H: 94°F
L: 60°F

Air Quality

AQI: 1 - Good
PM2.5: 6.9 μg/m3
PM10: 9.2 μg/m3
Carbon Monoxide: 189 μg/m3
Nitrogen Dioxide: 8.8 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 69 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:48 PM
Sunset: 9:32 PM
Daylight: 15 hrs 27 mins
Moonrise: 1:49 PM
Moon Transit: 7:51 PM
Moonset: 1:23 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

3:19 AM - 5:49 AM
7:21 PM - 9:51 PM

Minor Periods

1:19 PM - 2:49 PM
12:53 AM - 2:23 AM

Action Rating: 4 out of 5

Red Flag Warning issued June 20 at 5:57PM MDT until June 20 at 9:00PM MDT by NWS Boise ID

Effective: Sat June 20, 2026, 5:57 PM
Expires: Sat June 20, 2026, 9:00 PM

...RED FLAG WARNING FOR LIGHTNING... .Ongoing thunderstorms will continue through 9PM MDT/8PM PDT this evening. * AFFECTED AREA...In Idaho, Fire Weather Zones 423 Owyhee Mountains and 426 Southern Highlands. * TIMING...Until 9 PM MDT this evening. * THUNDERSTORMS...Scattered coverage with abundant lightning. * OUTFLOW WINDS...Gusty erratic winds up to 40 mph. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will occur shortly.
Sunday, June 21, 2026

Weather Forecast

Sunny
91.8°F
58.5°F
74.6°F
29%
0 in
0%
0%
11.2 mph
9.3


Air Quality

AQI: 1 - Good
PM2.5: 2.98 μg/m3
PM10: 3.97 μg/m3
Carbon Monoxide: 120.67 μg/m3
Nitrogen Dioxide: 3.03 μg/m3
Sulphur Dioxide: 0.28 μg/m3
Ozone: 93.5 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:48 PM
Sunset: 9:32 PM
Daylight: 15 hrs 27 mins
Moonrise: 1:49 PM
Moon Transit: 7:51 PM
Moonset: 1:23 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

3:19 AM - 5:49 AM
7:21 PM - 9:51 PM

Minor Periods

1:19 PM - 2:49 PM
12:53 AM - 2:23 AM

Action Rating: 4 out of 5

Monday, June 22, 2026

Weather Forecast

Sunny
90.7°F
56.2°F
73.8°F
22%
0 in
0%
0%
11 mph
9.3


Air Quality

AQI: 1 - Good
PM2.5: 2.97 μg/m3
PM10: 3.88 μg/m3
Carbon Monoxide: 115.04 μg/m3
Nitrogen Dioxide: 2.48 μg/m3
Sulphur Dioxide: 0.27 μg/m3
Ozone: 96.88 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:48 PM
Sunset: 9:32 PM
Daylight: 15 hrs 27 mins
Moonrise: 2:56 PM
Moon Transit: 8:33 PM
Moonset: 1:42 AM
Moon Phase: First Quarter
Moon Illumination: 49.7%

Best Times for Fishing or Hunting

Major Periods

4:02 AM - 6:32 AM
8:03 PM - 10:33 PM

Minor Periods

2:26 PM - 3:56 PM
1:12 AM - 2:42 AM

Action Rating: 3 out of 5

Tuesday, June 23, 2026

Weather Forecast

Sunny
97.3°F
56.9°F
78°F
21%
0 in
0%
0%
7.2 mph
9.3


Air Quality

AQI: 1 - Good
PM2.5: 2.96 μg/m3
PM10: 3.35 μg/m3
Carbon Monoxide: 117.49 μg/m3
Nitrogen Dioxide: 6.81 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 89.88 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:49 PM
Sunset: 9:32 PM
Daylight: 15 hrs 26 mins
Moonrise: 4:02 PM
Moon Transit: 9:16 PM
Moonset: 2:01 AM
Moon Phase: First Quarter
Moon Illumination: 61.0%

Best Times for Fishing or Hunting

Major Periods

4:44 AM - 7:14 AM
8:46 PM - 11:16 PM

Minor Periods

3:32 PM - 5:02 PM
1:31 AM - 3:01 AM

Action Rating: 2 out of 5

Wednesday, June 24, 2026

Weather Forecast

Patchy rain nearby
97°F
60.2°F
80°F
26%
0.02 in
36%
0%
11.6 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 1.69 μg/m3
PM10: 2.1 μg/m3
Carbon Monoxide: 116.67 μg/m3
Nitrogen Dioxide: 3.3 μg/m3
Sulphur Dioxide: 0.23 μg/m3
Ozone: 93.17 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:49 PM
Sunset: 9:32 PM
Daylight: 15 hrs 26 mins
Moonrise: 5:07 PM
Moon Transit: 10:00 PM
Moonset: 2:22 AM
Moon Phase: First Quarter
Moon Illumination: 71.7%

Best Times for Fishing or Hunting

Major Periods

5:27 AM - 7:57 AM
9:30 PM - 12:00 PM

Minor Periods

4:37 PM - 6:07 PM
1:52 AM - 3:22 AM

Action Rating: 3 out of 5

Thursday, June 25, 2026

Weather Forecast

Sunny
94°F
59.6°F
74.3°F
26%
0 in
1%
0%
12.8 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.8 μg/m3
PM10: 4.47 μg/m3
Carbon Monoxide: 155 μg/m3
Nitrogen Dioxide: 17.39 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 67.14 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:49 PM
Sunset: 9:32 PM
Daylight: 15 hrs 26 mins
Moonrise: 6:13 PM
Moon Transit: 10:46 PM
Moonset: 2:45 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.2%

Best Times for Fishing or Hunting

Major Periods

6:12 AM - 8:42 AM
12:00 AM - 12:00 AM

Minor Periods

5:43 PM - 7:13 PM
2:15 AM - 3:45 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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