Lower Columbia River Temperature Report for September 2018  
Generated Mon Oct 1 06:18:14 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
Sep 1 67.4 67.5 68.0 0/24 67.3 67.6 67.9 0/24 68.1 68.2 68.5 24/24 68.2 68.3 68.5 24/24 68.0 68.2 68.4 19/24 68.1 68.3 68.7 24/24 58.8 59.4 60.8 0/24 68.6 68.9 69.2 24/24 68.5 68.9 69.2 24/24 68.3 68.9 69.8 24/24 66.6 67.0 67.4 0/24
Sep 2 67.6 67.9 68.2 5/24 67.6 67.9 68.2 5/24 68.0 68.2 68.4 17/24 68.1 68.3 68.5 24/24 67.5 67.8 68.1 5/24 67.7 67.9 68.0 0/24 59.5 60.2 61.0 0/24 68.1 68.3 68.6 24/24 68.0 68.4 68.9 23/24 68.3 68.7 69.2 24/24 66.6 67.1 67.6 0/24
Sep 3 67.9 68.1 68.4 13/24 67.8 68.1 68.5 13/24 68.1 68.3 68.4 24/24 68.1 68.4 68.6 24/24 67.7 68.0 68.3 11/24 67.7 67.9 68.1 7/24 59.9 60.4 61.0 0/24 67.7 67.9 68.2 5/24 67.5 68.0 68.6 7/24 68.1 68.5 69.0 24/24 66.9 67.3 67.5 0/24
Sep 4 68.1 68.5 69.4 24/24 68.1 68.4 68.8 24/24 68.3 68.6 69.3 24/24 68.3 68.5 68.8 24/24 67.8 68.1 68.3 14/24 67.9 68.1 68.3 15/24 60.8 61.0 61.3 0/24 67.5 67.7 67.9 0/24 67.2 67.7 68.2 3/24 67.4 68.0 68.5 13/24 67.0 67.3 67.6 0/24
Sep 5 68.1 68.4 68.7 10/10 68.0 68.2 68.5 20/23 68.7 69.1 69.4 24/24 68.6 68.7 68.9 24/24 67.9 68.3 68.6 19/24 68.1 68.3 68.6 24/24 60.6 64.4 67.3 0/24 67.3 67.5 67.6 0/24 67.0 67.5 68.4 1/24 67.6 68.1 68.5 7/11 66.8 67.1 67.6 0/17
Sep 6 --- --- --- 0/0 68.1 68.3 68.4 24/24 68.5 68.8 69.1 24/24 68.5 68.7 68.8 24/24 68.2 68.5 68.9 24/24 68.4 68.5 68.7 24/24 67.3 67.5 67.9 0/24 67.1 67.5 67.9 0/24 67.0 67.6 68.6 4/24 67.5 67.9 68.3 6/18 --- --- --- 0/0
Sep 7 --- --- --- 0/0 68.1 68.4 68.7 24/24 68.3 68.4 68.7 24/24 68.3 68.4 68.6 24/24 68.3 68.6 68.9 24/24 68.6 68.7 68.7 24/24 67.9 68.0 68.1 7/24 67.6 68.0 68.4 10/24 67.7 68.0 68.6 10/24 67.6 68.1 68.4 16/24 --- --- --- 0/0
Sep 8 --- --- --- 0/0 68.0 68.2 68.5 15/24 68.2 68.3 68.3 24/24 68.2 68.3 68.5 24/24 68.2 68.4 68.6 24/24 68.3 68.4 68.6 24/24 67.8 68.0 68.2 8/24 67.9 68.0 68.2 11/24 67.8 68.2 68.7 16/24 68.0 68.4 68.7 21/24 --- --- --- 0/0
Sep 9 --- --- --- 0/0 67.9 68.1 68.5 14/24 68.1 68.2 68.4 24/24 68.2 68.3 68.6 24/24 67.8 68.0 68.3 11/24 67.9 68.2 68.4 20/24 67.8 67.9 68.0 0/24 67.7 67.9 68.3 8/24 67.3 67.9 68.5 10/24 68.2 68.4 68.6 24/24 --- --- --- 0/0
Sep 10 --- --- --- 0/0 67.9 68.1 68.3 17/24 68.0 68.1 68.3 23/24 68.1 68.2 68.3 24/24 67.8 67.9 68.0 0/24 67.7 67.9 68.1 2/24 67.8 67.9 68.0 0/24 67.8 67.9 68.0 0/24 67.6 67.9 68.2 6/24 67.8 68.2 68.4 19/24 --- --- --- 0/0
Sep 11 --- --- --- 0/0 68.1 68.2 68.5 24/24 67.9 68.0 68.0 0/24 68.0 68.1 68.2 12/24 67.4 67.6 67.8 0/24 67.4 67.6 67.8 0/24 67.5 67.6 67.8 0/24 67.5 67.6 67.8 0/24 67.4 67.7 67.8 0/24 67.6 67.7 67.9 0/24 --- --- --- 0/0
Sep 12 --- --- --- 0/0 68.0 68.2 68.5 22/24 67.8 67.9 68.0 0/24 67.8 68.0 68.1 7/24 67.1 67.3 67.4 0/24 67.2 67.3 67.4 0/24 67.2 67.4 67.6 0/24 67.2 67.4 67.6 0/24 67.2 67.5 68.0 0/24 67.2 67.4 67.6 0/24 --- --- --- 0/0
Sep 13 --- --- --- 0/0 67.8 68.0 68.3 8/24 67.7 67.8 67.9 0/24 67.7 67.9 68.1 1/24 66.9 67.1 67.3 0/24 67.0 67.1 67.2 0/24 66.8 66.9 67.2 0/24 66.8 67.0 67.2 0/24 66.6 67.1 67.5 0/24 66.6 67.1 67.4 0/24 --- --- --- 0/0
Sep 14 --- --- --- 0/0 67.2 67.6 67.8 0/24 67.6 67.7 68.0 0/24 67.6 67.8 67.9 0/24 67.0 67.1 67.2 0/24 66.9 67.0 67.3 0/24 66.7 66.7 66.8 0/24 66.6 66.8 67.1 0/24 66.3 66.8 67.2 0/24 66.7 67.2 67.5 0/24 --- --- --- 0/0
Sep 15 --- --- --- 0/0 66.8 67.1 67.3 0/24 67.5 67.6 67.7 0/24 67.5 67.6 67.7 0/24 66.9 67.1 67.2 0/24 66.9 67.0 67.1 0/24 66.3 66.5 66.8 0/24 66.4 66.6 66.7 0/24 66.4 66.6 66.9 0/24 66.4 66.8 67.4 0/24 --- --- --- 0/0
Sep 16 --- --- --- 0/0 66.4 66.7 66.9 0/24 67.3 67.4 67.5 0/24 67.2 67.4 67.5 0/24 66.7 66.8 67.1 0/24 66.7 66.9 67.0 0/24 66.2 66.2 66.3 0/24 66.2 66.3 66.3 0/24 66.0 66.2 66.4 0/24 65.9 66.2 66.7 0/24 --- --- --- 0/0
Sep 17 --- --- --- 0/0 66.3 66.5 66.8 0/24 67.0 67.1 67.2 0/24 67.1 67.2 67.3 0/24 66.3 66.5 66.8 0/24 66.4 66.6 66.7 0/24 65.9 66.0 66.2 0/24 66.0 66.1 66.2 0/24 65.7 66.1 66.8 0/24 65.6 66.0 66.5 0/24 --- --- --- 0/0
Sep 18 --- --- --- 0/0 66.2 66.5 66.7 0/24 66.9 67.0 67.2 0/24 67.0 67.1 67.2 0/24 66.3 66.6 66.9 0/24 66.4 66.5 66.7 0/24 65.9 66.0 66.1 0/24 65.8 66.0 66.3 0/24 65.4 66.1 66.5 0/24 65.3 65.9 66.3 0/24 --- --- --- 0/0
Sep 19 --- --- --- 0/0 66.1 66.2 66.4 0/24 66.6 66.8 67.1 0/24 66.7 66.9 67.0 0/24 66.5 66.6 66.8 0/24 66.4 66.6 66.8 0/24 65.9 66.0 66.1 0/24 65.8 66.0 66.3 0/24 65.4 66.0 66.6 0/24 65.8 66.0 66.3 0/24 --- --- --- 0/0
Sep 20 --- --- --- 0/0 65.9 66.0 66.3 0/24 66.3 66.4 66.6 0/24 66.4 66.5 66.7 0/24 66.1 66.4 66.6 0/24 66.2 66.4 66.7 0/24 65.5 65.7 65.9 0/24 65.5 65.8 66.0 0/24 65.3 65.8 66.6 0/24 65.8 66.1 66.5 0/24 --- --- --- 0/0
Sep 21 --- --- --- 0/0 65.7 65.9 66.2 0/24 66.2 66.3 66.3 0/24 66.3 66.4 66.5 0/24 65.7 65.9 66.1 0/24 65.8 66.0 66.2 0/24 65.2 65.3 65.5 0/24 65.2 65.4 65.6 0/24 64.8 65.4 66.0 0/24 65.6 65.9 66.1 0/24 --- --- --- 0/0
Sep 22 --- --- --- 0/0 65.2 65.5 65.8 0/24 66.0 66.1 66.2 0/24 66.0 66.2 66.3 0/24 65.7 65.8 65.8 0/24 65.5 65.7 65.8 0/24 65.2 65.3 65.4 0/24 65.1 65.2 65.4 0/24 64.9 65.3 65.8 0/24 65.1 65.5 65.8 0/24 --- --- --- 0/0
Sep 23 --- --- --- 0/0 65.1 65.3 65.6 0/24 65.7 65.8 66.0 0/24 65.6 65.8 66.0 0/24 65.2 65.5 65.7 0/24 65.3 65.5 65.7 0/24 65.1 65.2 65.3 0/24 65.0 65.1 65.3 0/24 64.6 65.1 65.7 0/24 64.6 65.0 65.3 0/24 --- --- --- 0/0
Sep 24 --- --- --- 0/0 64.9 65.1 65.4 0/24 65.5 65.6 65.8 0/24 65.5 65.7 65.9 0/24 64.5 64.8 65.2 0/24 64.7 65.0 65.3 0/24 64.9 65.0 65.2 0/24 64.8 65.0 65.2 0/24 64.4 65.0 65.6 0/24 64.4 65.0 65.4 0/24 --- --- --- 0/0
Sep 25 --- --- --- 0/0 65.0 65.2 65.4 0/24 65.6 65.8 66.4 0/24 65.6 65.8 65.9 0/24 64.3 64.8 65.4 0/24 64.3 64.7 65.3 0/24 64.2 64.5 64.9 0/24 64.3 64.7 65.0 0/24 64.1 64.6 65.0 0/24 64.4 64.8 65.4 0/24 --- --- --- 0/0
Sep 26 --- --- --- 0/0 64.8 65.1 65.4 0/24 65.6 65.8 66.2 0/14 65.6 65.7 65.9 0/24 65.0 65.1 65.2 0/12 65.0 65.3 65.6 0/24 64.1 64.3 64.5 0/24 64.1 64.3 64.5 0/24 63.8 64.3 65.1 0/24 63.6 64.2 64.9 0/20 --- --- --- 0/0
Sep 27 --- --- --- 0/0 64.5 64.6 64.8 0/24 --- --- --- 0/0 65.5 65.7 65.8 0/24 --- --- --- 0/0 65.3 65.4 65.6 0/24 64.5 64.5 64.5 0/10 64.3 64.4 64.5 0/12 63.6 64.4 65.2 0/24 --- --- --- 0/0 --- --- --- 0/0
Sep 28 --- --- --- 0/0 64.3 64.5 64.7 0/24 --- --- --- 0/0 65.5 65.6 65.8 0/24 --- --- --- 0/0 65.4 65.5 65.7 0/24 --- --- --- 0/0 --- --- --- 0/0 63.2 64.1 65.3 0/24 --- --- --- 0/0 --- --- --- 0/0
Sep 29 --- --- --- 0/0 63.9 64.3 64.5 0/24 --- --- --- 0/0 65.4 65.5 65.7 0/24 --- --- --- 0/0 65.3 65.5 65.6 0/24 --- --- --- 0/0 --- --- --- 0/0 63.7 64.3 64.6 0/24 --- --- --- 0/0 --- --- --- 0/0
Sep 30 --- --- --- 0/0 63.5 63.7 64.0 0/24 --- --- --- 0/0 65.3 65.4 65.5 0/24 --- --- --- 0/0 65.1 65.3 65.5 0/24 --- --- --- 0/0 --- --- --- 0/0 64.1 64.4 64.8 0/24 --- --- --- 0/0 --- --- --- 0/0
>68.05 2 3 4 52/
106		 4 10 12 210/
719		 8 10 10 232/
614		 10 11 13 260/
720		 3 6 9 151/
612		 5 7 9 164/
720		 0 0 2 15/
634		 2 2 6 82/
636		 1 3 10 104/
720		 4 8 10 178/
601		 0 0 0 0/
113

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.