Mid and Upper-Columbia River Temperature Report for April 2026  
Generated 2026-04-13 23:27:07

  Chief Joseph Dam forebay (CHJ) Chief Joseph tailwater (CHQW)
Date Min Avg Max >68.05 Min Avg Max >68.05
04 01 41.8 41.8 41.9 0/23 42.1 42.2 42.3 0/24
04 02 41.8 41.9 42.2 0/23 42.0 42.2 42.4 0/24
04 03 42.0 42.2 42.4 0/23 42.3 42.5 42.7 0/24
04 04 42.3 42.6 43.1 0/23 42.6 42.8 43.0 0/24
04 05 42.7 42.9 43.2 0/23 42.9 43.0 43.2 0/24
04 06 42.9 43.1 43.2 0/23 43.1 43.3 43.5 0/24
04 07 6.7 42.0 44.5 0/23 43.3 43.6 44.3 0/24
04 08 44.0 44.1 44.3 0/23 43.2 43.5 43.8 0/24
04 09 44.1 44.4 44.7 0/23 43.4 43.6 44.0 0/24
04 10 44.0 44.2 44.7 0/23 43.4 43.6 43.9 0/24
04 11 44.0 44.1 44.2 0/23 43.5 43.8 43.9 0/24
04 12 44.1 44.4 44.8 0/23 43.8 44.0 44.3 0/24
04 13 44.4 44.7 45.0 0/23 44.0 44.2 44.4 0/23
04 14 --- --- --- 0/0 --- --- --- 0/0
04 15 --- --- --- 0/0 --- --- --- 0/0
04 16 --- --- --- 0/0 --- --- --- 0/0
04 17 --- --- --- 0/0 --- --- --- 0/0
04 18 --- --- --- 0/0 --- --- --- 0/0
04 19 --- --- --- 0/0 --- --- --- 0/0
04 20 --- --- --- 0/0 --- --- --- 0/0
04 21 --- --- --- 0/0 --- --- --- 0/0
04 22 --- --- --- 0/0 --- --- --- 0/0
04 23 --- --- --- 0/0 --- --- --- 0/0
04 24 --- --- --- 0/0 --- --- --- 0/0
04 25 --- --- --- 0/0 --- --- --- 0/0
04 26 --- --- --- 0/0 --- --- --- 0/0
04 27 --- --- --- 0/0 --- --- --- 0/0
04 28 --- --- --- 0/0 --- --- --- 0/0
04 29 --- --- --- 0/0 --- --- --- 0/0
04 30 --- --- --- 0/0 --- --- --- 0/0
>68.05 0 0 0 0/
299		 0 0 0 0/
311

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.