Lower Columbia River Temperature Report for April 2018  
Generated Tue May 1 06:18:19 2018

  McNary Dam forebay on Columbia R. (MCNA) McNary Dam tailwater on Columbia R. (MCPW) John Day Dam forebay (JDY) John Day Dam tailwater (JHAW) The Dalles Dam forebay on Columbia R. (TDA) The Dalles tailwater Downstream (TDDO) Bonneville Dam forebay (BON) Cascade Island (CCIW) Warrendale (WRNO) Camas / Washougal (CWMW) Pasco - Columbia Rivers (PAQW)
Date Min Avg Max >68.05 Min Avg Max >68.05 Min Avg Max >68.05 Min Avg Max >68.05 Min Avg Max >68.05 Min Avg Max >68.05 Min Avg Max >68.05 Min Avg Max >68.05 Min Avg Max >68.05 Min Avg Max >68.05 Min Avg Max >68.05
Apr 1 43.8 44.2 44.6 0/24 44.0 44.4 44.6 0/24 44.9 45.0 45.1 0/24 45.0 45.0 45.1 0/24 45.2 45.3 45.3 0/24 45.1 45.2 45.4 0/24 45.5 45.6 45.7 0/24 45.6 45.7 45.8 0/24 45.4 45.6 45.7 0/24 45.6 45.8 46.1 0/24 42.4 42.8 43.1 0/24
Apr 2 43.7 44.0 44.4 0/24 44.4 44.5 44.6 0/24 44.9 45.0 45.1 0/24 45.0 45.0 45.1 0/24 45.1 45.2 45.4 0/24 45.0 45.2 45.4 0/24 45.1 45.3 45.4 0/24 45.3 45.4 45.5 0/24 45.2 45.3 45.6 0/24 45.2 45.6 46.3 0/24 42.0 42.5 43.0 0/24
Apr 3 43.6 43.8 44.0 0/24 44.0 44.2 44.4 0/24 45.0 45.1 45.2 0/24 45.0 45.1 45.2 0/24 45.2 45.3 45.3 0/24 45.1 45.3 45.5 0/24 45.2 45.3 45.5 0/24 45.3 45.4 45.5 0/24 45.2 45.4 45.6 0/19 44.9 45.5 46.1 0/24 42.2 42.5 42.9 0/24
Apr 4 43.5 43.7 44.2 0/24 44.0 44.1 44.2 0/24 45.1 45.2 45.3 0/24 45.1 45.2 45.4 0/24 45.3 45.4 45.6 0/24 45.3 45.5 45.7 0/24 45.4 45.5 45.8 0/24 45.4 45.5 45.7 0/24 45.5 45.6 45.8 0/24 45.5 45.8 46.5 0/24 42.1 42.5 42.8 0/24
Apr 5 43.5 43.8 44.1 0/24 44.0 44.1 44.2 0/24 45.3 45.3 45.4 0/24 45.2 45.3 45.4 0/24 45.6 45.7 45.8 0/24 45.6 45.7 45.8 0/24 45.6 45.8 45.9 0/24 45.7 45.8 45.9 0/24 45.8 45.8 46.0 0/24 45.8 46.0 46.3 0/24 42.5 42.7 42.9 0/24
Apr 6 43.5 44.0 44.8 0/24 44.0 44.2 44.3 0/24 45.4 45.6 46.0 0/24 45.3 45.5 45.9 0/24 45.7 45.8 46.1 0/24 45.8 45.9 46.1 0/24 45.8 46.1 46.5 0/24 45.8 46.1 46.5 0/24 45.9 46.2 46.6 0/24 46.0 46.7 47.7 0/24 42.5 43.0 43.8 0/24
Apr 7 44.1 44.5 44.9 0/24 44.2 44.6 44.8 0/24 45.6 45.8 46.1 0/24 45.5 45.7 45.9 0/24 45.9 46.1 46.2 0/24 46.1 46.2 46.3 0/24 46.3 46.5 46.6 0/24 46.4 46.5 46.6 0/24 46.5 46.6 46.8 0/24 46.8 47.1 47.4 0/24 42.8 43.1 43.6 0/24
Apr 8 44.8 45.0 45.3 0/24 44.7 45.1 45.2 0/24 45.5 45.6 45.7 0/24 45.4 45.5 45.7 0/24 46.0 46.2 46.4 0/24 46.2 46.3 46.4 0/24 46.4 46.4 46.5 0/24 46.4 46.4 46.5 0/24 46.4 46.5 46.6 0/24 46.6 46.7 46.8 0/24 42.7 43.0 43.4 0/24
Apr 9 44.6 45.0 45.4 0/24 45.1 45.2 45.4 0/24 45.5 45.8 46.3 0/24 45.5 45.8 46.2 0/24 45.9 46.1 46.3 0/24 46.0 46.2 46.3 0/24 46.4 46.6 46.8 0/24 46.3 46.6 46.8 0/24 46.4 46.7 47.0 0/21 46.2 46.8 47.6 0/24 42.8 43.4 44.2 0/24
Apr 10 45.4 45.8 46.3 0/24 45.3 45.7 46.1 0/24 46.0 46.1 46.3 0/24 46.1 46.2 46.3 0/24 46.2 46.5 46.8 0/24 46.3 46.5 46.8 0/24 46.4 46.6 46.6 0/24 46.4 46.6 46.6 0/24 46.6 46.7 46.9 0/24 47.0 47.2 47.5 0/24 43.5 43.7 44.0 0/24
Apr 11 46.3 46.5 46.7 0/23 46.1 46.4 46.8 0/24 46.0 46.2 46.5 0/24 46.1 46.3 46.6 0/24 46.4 46.6 46.9 0/24 46.5 46.6 46.9 0/24 46.4 46.6 46.7 0/24 46.4 46.6 46.7 0/24 46.4 46.7 46.9 0/24 46.6 46.8 47.1 0/24 43.4 43.9 44.6 0/24
Apr 12 46.3 46.6 46.8 0/24 45.7 46.4 46.9 0/24 46.2 46.3 46.4 0/24 46.2 46.4 46.5 0/24 46.4 46.6 46.9 0/24 46.5 46.7 46.9 0/24 46.5 46.6 46.6 0/24 46.5 46.6 46.6 0/24 46.5 46.6 46.7 0/24 46.5 46.7 46.8 0/24 43.4 43.9 44.5 0/24
Apr 13 46.3 46.6 46.8 0/24 46.1 46.3 46.4 0/24 46.4 46.5 46.6 0/24 46.5 46.6 46.7 0/24 46.5 46.8 47.0 0/24 46.6 46.8 47.0 0/24 46.5 46.7 46.8 0/24 46.5 46.7 46.8 0/24 46.5 46.7 46.9 0/24 46.5 46.7 46.9 0/24 43.7 43.9 44.0 0/24
Apr 14 46.4 46.7 47.2 0/24 46.3 46.4 46.5 0/24 46.6 46.8 47.2 0/24 46.7 46.9 47.2 0/24 46.8 47.1 47.5 0/24 46.9 47.2 47.5 0/24 46.8 47.0 47.1 0/24 46.8 47.0 47.0 0/24 46.8 47.0 47.2 0/24 46.8 47.1 47.5 0/24 43.8 44.7 45.7 0/24
Apr 15 46.8 47.1 47.3 0/24 46.5 46.8 47.0 0/24 47.1 47.3 47.6 0/24 47.2 47.4 47.6 0/24 47.3 47.5 47.7 0/24 47.4 47.5 47.7 0/24 47.1 47.3 47.4 0/24 47.1 47.3 47.4 0/24 47.1 47.4 47.6 0/24 47.1 47.3 47.6 0/24 45.4 45.6 46.0 0/24
Apr 16 47.2 47.5 47.9 0/24 46.8 47.0 47.4 0/24 47.3 47.4 47.5 0/24 47.4 47.5 47.6 0/24 47.5 47.7 47.9 0/24 47.6 47.8 48.0 0/24 47.4 47.5 47.6 0/24 47.4 47.5 47.6 0/24 47.4 47.5 47.6 0/24 47.2 47.5 47.8 0/24 44.6 45.1 45.4 0/24
Apr 17 47.3 47.5 47.8 0/24 47.3 47.5 47.6 0/24 47.2 47.4 47.6 0/24 47.3 47.4 47.6 0/24 47.4 47.7 47.9 0/24 47.6 47.7 47.9 0/24 47.5 47.6 47.8 0/24 47.5 47.6 47.8 0/24 47.5 47.7 47.9 0/24 47.4 47.7 48.0 0/24 44.4 44.9 45.6 0/24
Apr 18 47.1 47.3 47.5 0/24 47.0 47.2 47.3 0/24 47.5 47.7 48.0 0/24 47.7 47.8 48.0 0/24 47.6 47.8 48.1 0/24 47.7 47.9 48.1 0/24 47.7 47.8 47.9 0/24 47.7 47.8 47.8 0/24 47.8 47.9 48.0 0/24 47.6 48.0 48.6 0/24 45.1 45.5 46.0 0/24
Apr 19 47.0 47.6 48.3 0/24 46.9 47.1 47.2 0/24 47.8 48.1 48.6 0/24 47.8 48.1 48.5 0/24 47.8 48.2 48.7 0/24 48.0 48.3 48.7 0/24 47.9 48.1 48.5 0/24 47.8 48.1 48.5 0/24 47.9 48.2 48.6 0/24 47.6 48.3 49.2 0/24 45.2 45.9 46.6 0/24
Apr 20 47.8 48.1 48.7 0/24 47.3 47.9 48.1 0/24 48.4 48.6 49.0 0/24 48.4 48.7 49.0 0/24 48.4 48.7 49.3 0/24 48.5 48.8 49.2 0/24 48.5 48.6 48.8 0/24 48.5 48.6 48.8 0/24 48.5 48.7 49.0 0/24 48.3 48.9 49.6 0/24 45.8 46.5 47.2 0/24
Apr 21 48.3 48.5 48.9 0/24 48.0 48.2 48.5 0/24 48.7 48.8 49.0 0/24 48.8 48.9 49.0 0/24 49.0 49.3 49.5 0/24 49.1 49.4 49.5 0/24 48.9 49.1 49.4 0/24 48.9 49.1 49.4 0/24 48.9 49.2 49.5 0/24 48.8 49.5 50.3 0/24 46.5 47.0 47.6 0/24
Apr 22 48.3 48.8 49.9 0/24 48.2 48.4 48.5 0/24 48.8 49.1 49.7 0/24 48.9 49.2 49.5 0/24 49.0 49.3 49.7 0/24 49.1 49.4 49.5 0/24 49.4 49.6 49.8 0/24 49.4 49.6 49.9 0/24 49.4 49.7 50.1 0/24 49.1 49.9 50.9 0/24 46.2 46.9 47.4 0/24
Apr 23 48.7 49.3 50.1 0/24 48.5 48.9 49.3 0/24 49.4 49.7 50.5 0/24 49.4 49.7 50.1 0/24 49.4 49.7 50.1 0/24 49.5 49.7 50.0 0/24 49.7 49.8 49.9 0/24 49.7 49.8 49.9 0/24 49.7 50.0 50.3 0/24 49.7 50.4 51.2 0/24 46.4 47.1 47.8 0/24
Apr 24 48.7 49.3 49.9 0/24 48.6 49.0 49.5 0/24 49.8 50.0 50.3 0/24 49.8 50.0 50.3 0/24 49.6 50.0 50.5 0/24 49.8 50.1 50.5 0/24 49.8 50.1 50.3 0/24 49.8 50.1 50.3 0/24 49.8 50.2 50.5 0/24 49.7 50.5 51.5 0/24 47.0 47.7 48.4 0/24
Apr 25 49.2 49.8 50.7 0/24 48.9 49.3 49.6 0/24 50.2 50.4 51.1 0/24 50.2 50.5 50.8 0/24 50.2 50.6 51.1 0/23 50.3 50.6 50.9 0/24 50.3 50.6 50.9 0/24 50.3 50.6 50.9 0/24 50.3 50.8 51.2 0/24 50.4 51.2 52.1 0/24 47.6 48.1 48.6 0/24
Apr 26 49.7 50.4 51.5 0/24 49.4 49.9 50.1 0/24 50.6 50.8 51.3 0/24 50.7 50.9 51.3 0/24 50.7 51.1 51.5 0/24 50.8 51.0 51.4 0/24 50.9 51.2 51.5 0/24 50.9 51.3 51.5 0/24 51.0 51.4 51.8 0/24 51.0 51.9 53.0 0/24 47.9 48.6 49.3 0/24
Apr 27 50.2 50.7 51.3 0/24 49.9 50.4 50.9 0/24 50.8 51.1 51.5 0/24 50.9 51.1 51.3 0/24 51.1 51.4 51.7 0/24 51.2 51.4 51.7 0/24 51.5 51.6 51.7 0/24 51.5 51.6 51.7 0/24 51.5 51.6 51.8 0/24 51.6 51.9 52.3 0/24 48.3 49.0 49.9 0/24
Apr 28 50.6 50.9 51.2 0/24 50.4 50.7 51.0 0/24 50.8 51.0 51.2 0/24 50.9 51.1 51.4 0/24 51.1 51.4 51.7 0/24 51.2 51.4 51.7 0/24 51.6 51.7 51.8 0/24 51.6 51.7 51.8 0/24 51.5 51.7 51.9 0/24 51.5 52.0 52.6 0/24 48.6 49.3 50.1 0/24
Apr 29 50.8 51.2 51.9 0/24 50.6 50.8 50.9 0/24 51.2 51.4 51.7 0/24 51.3 51.6 51.9 0/24 51.3 51.7 52.1 0/24 51.4 51.7 52.1 0/24 51.8 51.9 52.0 0/24 51.8 51.9 52.0 0/24 51.7 51.9 52.1 0/24 51.7 52.2 52.7 0/24 48.7 49.4 50.0 0/24
Apr 30 51.5 51.8 51.9 0/24 51.0 51.4 51.4 0/24 51.7 51.9 52.1 0/24 51.9 52.0 52.1 0/24 51.7 52.0 52.5 0/24 51.7 52.0 52.4 0/24 51.7 51.9 52.2 0/24 51.7 52.0 52.2 0/24 51.9 52.0 52.1 0/24 51.8 52.1 52.4 0/24 48.7 49.5 50.3 0/24
>68.05 0 0 0 0/
719		 0 0 0 0/
720		 0 0 0 0/
720		 0 0 0 0/
720		 0 0 0 0/
719		 0 0 0 0/
720		 0 0 0 0/
720		 0 0 0 0/
720		 0 0 0 0/
712		 0 0 0 0/
720		 0 0 0 0/
720

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.