Mid and Upper-Columbia River Temperature Report for April 2018  
Generated Tue May 1 06:18:25 2018

  Chief Joseph Dam forebay (CHJ) Chief Joseph tailwater (CHQW)
Date Min Avg Max >68.05 Min Avg Max >68.05
Apr 1 38.7 38.8 39.0 0/24 38.9 39.2 39.5 0/24
Apr 2 38.8 39.0 39.2 0/24 39.2 39.3 39.5 0/24
Apr 3 38.9 39.0 39.1 0/24 39.2 39.4 39.5 0/24
Apr 4 39.1 39.1 39.2 0/24 39.3 39.5 39.7 0/24
Apr 5 39.2 39.2 39.4 0/24 39.6 39.7 39.8 0/24
Apr 6 39.4 39.5 39.6 0/24 39.8 39.9 40.0 0/24
Apr 7 39.6 39.7 39.9 0/24 40.0 40.1 40.3 0/24
Apr 8 39.9 40.1 40.3 0/24 40.3 40.5 40.8 0/24
Apr 9 40.3 40.5 40.8 0/24 40.6 40.8 41.0 0/16
Apr 10 40.7 41.0 41.2 0/24 40.9 41.1 41.4 0/24
Apr 11 41.2 41.3 41.5 0/24 41.3 41.5 41.7 0/24
Apr 12 41.5 41.6 41.8 0/24 41.6 41.7 42.0 0/24
Apr 13 41.7 41.8 42.0 0/24 41.8 42.0 42.2 0/24
Apr 14 41.9 42.0 42.1 0/24 42.0 42.1 42.3 0/24
Apr 15 42.0 42.1 42.3 0/24 42.1 42.3 42.4 0/24
Apr 16 42.3 42.5 42.7 0/24 42.4 42.6 42.8 0/24
Apr 17 42.6 42.8 43.0 0/24 42.7 42.9 43.2 0/24
Apr 18 42.8 42.9 43.0 0/24 42.9 43.0 43.1 0/24
Apr 19 42.9 43.0 43.1 0/22 43.0 43.1 43.2 0/24
Apr 20 42.9 43.2 43.5 0/24 43.1 43.3 43.4 0/24
Apr 21 43.3 43.5 43.8 0/24 43.5 43.6 43.7 0/24
Apr 22 43.5 43.7 44.1 0/24 43.6 43.8 44.0 0/24
Apr 23 43.7 43.8 44.0 0/24 43.8 43.8 43.9 0/24
Apr 24 43.7 44.1 44.4 0/24 43.9 44.1 44.3 0/24
Apr 25 44.2 44.6 45.1 0/24 44.3 44.6 44.8 0/24
Apr 26 44.5 44.9 45.4 0/24 44.7 45.0 45.2 0/24
Apr 27 44.8 45.0 45.1 0/24 45.1 45.3 45.5 0/24
Apr 28 44.8 45.0 45.1 0/24 45.4 45.5 45.6 0/24
Apr 29 45.0 45.1 45.3 0/24 45.5 45.6 45.7 0/24
Apr 30 45.0 45.4 46.1 0/24 45.5 45.7 46.0 0/24
>68.05 0 0 0 0/
718		 0 0 0 0/
712

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 >86

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

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