Mid and Upper-Columbia River Temperature Report for September 2025  
Generated 2025-10-01 13:18:06

  Chief Joseph Dam forebay (CHJ) Chief Joseph tailwater (CHQW)
Date Min Avg Max >68.05 Min Avg Max >68.05
09 01 --- --- --- 0/0 67.7 68.0 68.4 11/24
09 02 --- --- --- 0/0 67.4 67.7 67.9 0/22
09 03 --- --- --- 0/0 67.5 67.7 68.0 0/24
09 04 --- --- --- 0/0 67.7 68.0 68.4 9/24
09 05 --- --- --- 0/0 67.7 68.0 68.3 8/24
09 06 --- --- --- 0/0 67.6 67.9 68.3 6/24
09 07 --- --- --- 0/0 67.7 68.0 68.5 10/24
09 08 --- --- --- 0/0 67.7 67.9 68.4 7/24
09 09 67.7 67.9 68.1 1/7 67.3 67.6 67.7 0/24
09 10 67.5 67.6 67.7 0/14 67.0 67.3 67.7 0/24
09 11 --- --- --- 0/0 66.8 67.0 67.4 0/23
09 12 --- --- --- 0/0 66.8 67.0 67.4 0/24
09 13 --- --- --- 0/0 66.9 67.2 67.8 0/24
09 14 --- --- --- 0/0 67.0 67.1 67.4 0/24
09 15 --- --- --- 0/0 66.9 67.2 67.5 0/24
09 16 --- --- --- 0/0 66.9 67.1 67.4 0/24
09 17 --- --- --- 0/0 66.9 67.1 67.4 0/24
09 18 --- --- --- 0/0 66.7 66.8 67.0 0/21
09 19 --- --- --- 0/0 66.9 67.3 67.8 0/24
09 20 --- --- --- 0/0 67.2 67.4 67.7 0/24
09 21 --- --- --- 0/0 67.3 67.6 68.1 1/24
09 22 --- --- --- 0/0 67.1 67.4 67.7 0/24
09 23 --- --- --- 0/0 67.1 67.4 67.9 0/24
09 24 --- --- --- 0/0 66.8 67.1 67.7 0/23
09 25 --- --- --- 0/0 66.4 66.9 67.4 0/24
09 26 --- --- --- 0/0 66.4 66.6 67.0 0/24
09 27 --- --- --- 0/0 66.0 66.2 66.5 0/24
09 28 --- --- --- 0/0 65.8 66.1 66.5 0/24
09 29 --- --- --- 0/0 65.9 66.0 66.2 0/24
09 30 --- --- --- 0/0 65.8 65.9 66.2 0/24
>68.05 0 0 1 1/
21		 0 0 7 52/
713

Temperature in Degrees Fahrenheit
<32 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 >86

Bold, red text denotes values above 68.05°F.
--- indicates No Data

NOTICE: This report is based on raw, unverified data.