Lower Columbia River Temperature Report for September 2020  
Generated Thu Oct 1 06:18:06 2020

  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 68.9 69.1 69.5 24/24 68.9 69.1 69.3 24/24 70.0 70.1 70.2 24/24 70.1 70.2 70.4 24/24 69.4 69.7 70.2 24/24 69.5 69.8 70.0 24/24 68.6 68.8 69.3 24/24 68.4 68.8 69.1 24/24 68.3 68.8 69.5 24/24 68.9 69.3 69.6 24/24 67.2 67.7 68.2 8/24
Sep 2 68.8 68.9 69.2 24/24 68.9 69.1 69.3 24/24 70.1 70.2 70.3 24/24 70.2 70.3 70.4 24/24 69.9 70.3 70.8 24/24 69.9 70.2 70.6 24/24 69.1 69.4 69.7 24/24 69.2 69.2 69.4 12/12 68.9 69.4 69.7 24/24 69.0 69.7 70.5 24/24 67.9 68.3 68.6 18/24
Sep 3 68.8 68.9 69.4 24/24 68.7 69.0 69.2 24/24 70.1 70.4 71.2 24/24 70.2 70.4 70.6 24/24 70.3 70.6 70.9 24/24 70.4 70.6 70.9 24/24 69.6 69.9 70.4 24/24 --- --- --- 0/0 69.5 69.9 70.6 24/24 69.5 70.3 70.9 24/24 68.2 68.5 68.8 24/24
Sep 4 68.8 69.5 70.5 24/24 68.9 69.2 69.4 24/24 70.4 70.7 70.9 24/24 70.4 70.5 70.7 24/24 70.4 70.7 71.0 24/24 70.6 70.8 71.0 24/24 70.3 70.4 70.6 24/24 --- --- --- 0/0 70.0 70.5 71.3 24/24 70.2 70.8 71.4 24/24 68.3 68.5 68.7 24/24
Sep 5 69.3 69.6 70.2 24/24 69.1 69.3 69.5 24/24 70.1 70.2 70.4 24/24 70.0 70.2 70.4 24/24 70.2 70.5 70.9 24/24 70.4 70.6 70.9 24/24 70.3 70.4 70.6 24/24 --- --- --- 0/0 69.9 70.4 70.7 24/24 70.3 70.8 71.2 24/24 68.3 68.6 69.1 24/24
Sep 6 69.3 69.6 70.0 24/24 69.1 69.4 69.8 24/24 70.3 70.4 70.7 24/24 70.2 70.4 70.6 24/24 70.1 70.2 70.4 24/24 70.2 70.3 70.4 24/24 70.1 70.3 70.4 24/24 --- --- --- 0/0 69.9 70.2 70.7 24/24 70.2 70.6 71.0 24/24 68.4 68.8 69.1 24/24
Sep 7 69.3 69.7 70.2 24/24 68.9 69.4 69.6 24/24 70.4 70.5 70.7 24/24 70.4 70.5 70.6 24/24 69.9 70.1 70.3 24/24 69.9 70.1 70.2 24/24 69.9 70.2 70.4 24/24 --- --- --- 0/0 69.0 70.1 70.6 24/24 70.2 70.7 70.9 24/24 67.8 68.6 68.9 22/24
Sep 8 68.6 68.9 69.3 24/24 68.5 68.6 68.8 24/24 69.9 70.0 70.3 24/24 69.9 70.1 70.3 24/24 69.3 69.7 70.0 24/24 69.5 69.8 70.0 24/24 68.3 68.9 69.9 24/24 --- --- --- 0/0 67.2 68.1 69.1 14/24 67.1 68.0 70.0 8/24 65.7 66.5 67.7 0/24
Sep 9 68.2 68.5 69.1 24/24 68.0 68.2 68.5 20/24 69.7 70.0 70.4 24/24 69.8 70.0 70.1 24/24 68.8 69.1 69.3 24/24 69.0 69.2 69.5 24/24 67.7 67.9 68.3 5/24 --- --- --- 0/0 66.4 67.2 68.1 1/24 65.9 66.7 67.2 0/24 65.5 66.2 67.0 0/24
Sep 10 68.6 68.7 69.0 11/11 68.2 68.4 68.6 24/24 69.8 70.2 71.0 24/24 69.9 70.0 70.1 24/24 68.8 69.2 69.5 24/24 69.0 69.2 69.4 24/24 67.6 67.8 68.1 2/24 --- --- --- 0/0 66.9 67.6 68.1 2/24 65.9 66.7 67.3 0/24 66.6 67.1 67.6 0/24
Sep 11 --- --- --- 0/0 67.8 68.1 68.4 17/24 69.6 69.8 70.1 24/24 69.6 69.8 70.0 24/24 69.3 69.4 69.5 24/24 69.3 69.3 69.4 24/24 68.1 68.3 68.5 24/24 --- --- --- 0/0 67.7 68.0 68.2 12/24 66.6 67.0 67.4 0/24 67.2 67.6 67.9 0/24
Sep 12 --- --- --- 0/0 66.8 67.3 67.7 0/24 69.3 69.4 69.6 24/24 69.3 69.4 69.5 24/24 68.5 68.8 69.4 24/24 68.5 69.0 69.3 24/24 67.5 67.9 68.3 9/24 --- --- --- 0/0 67.4 67.8 68.0 0/24 66.8 67.0 67.3 0/24 67.3 67.5 67.7 0/24
Sep 13 --- --- --- 0/0 66.6 66.7 66.8 0/24 68.8 69.0 69.3 24/24 68.7 69.0 69.2 24/24 68.3 68.4 68.5 24/24 68.3 68.3 68.5 24/24 67.1 67.3 67.5 0/24 --- --- --- 0/0 66.9 67.2 67.3 0/24 66.3 66.7 67.1 0/24 66.5 66.7 67.2 0/24
Sep 14 --- --- --- 0/0 66.7 66.8 66.9 0/24 68.4 68.5 68.7 24/24 68.3 68.5 68.7 24/24 68.1 68.2 68.3 24/24 68.0 68.1 68.3 21/24 67.2 67.4 67.7 0/24 --- --- --- 0/0 66.8 67.2 67.5 0/24 65.9 66.5 67.0 0/24 65.9 66.1 66.4 0/24
Sep 15 --- --- --- 0/0 66.6 66.8 66.9 0/24 68.0 68.1 68.3 19/24 68.0 68.1 68.3 20/24 67.8 67.9 68.1 1/24 67.8 67.9 68.1 5/24 67.5 67.7 67.8 0/24 --- --- --- 0/0 67.3 67.6 68.1 1/24 66.7 67.0 67.4 0/24 65.5 65.7 65.9 0/24
Sep 16 --- --- --- 0/0 66.7 66.9 67.0 0/24 67.5 67.7 68.0 0/24 67.5 67.7 67.9 0/24 67.5 67.6 67.8 0/24 67.5 67.6 67.8 0/24 67.2 67.3 67.5 0/24 --- --- --- 0/0 67.0 67.2 67.5 0/24 66.7 67.0 67.5 0/24 65.5 65.8 66.0 0/24
Sep 17 --- --- --- 0/0 66.4 66.6 66.8 0/24 67.2 67.3 67.4 0/24 67.3 67.4 67.5 0/24 67.1 67.3 67.5 0/24 67.2 67.3 67.5 0/24 67.2 67.2 67.2 0/24 --- --- --- 0/0 66.9 67.1 67.4 0/24 66.5 66.8 67.2 0/24 65.6 65.9 66.1 0/24
Sep 18 --- --- --- 0/0 65.9 66.2 66.4 0/24 67.2 67.3 67.4 0/24 67.2 67.3 67.4 0/24 66.9 67.1 67.2 0/24 67.0 67.1 67.2 0/24 66.9 67.1 67.2 0/24 --- --- --- 0/0 66.8 67.0 67.2 0/24 66.7 66.9 67.2 0/24 65.5 65.7 65.9 0/24
Sep 19 --- --- --- 0/0 65.7 65.8 66.0 0/24 67.0 67.1 67.2 0/24 67.1 67.2 67.3 0/24 66.6 66.8 67.0 0/24 66.7 66.8 67.0 0/24 66.7 66.8 66.9 0/24 --- --- --- 0/0 66.7 66.8 67.0 0/24 66.5 66.8 67.0 0/24 65.0 65.5 65.9 0/24
Sep 20 --- --- --- 0/0 65.6 65.8 66.2 0/24 66.9 67.0 67.1 0/24 67.0 67.1 67.3 0/24 66.5 66.6 66.8 0/24 66.5 66.7 66.9 0/24 66.7 66.7 66.8 0/24 --- --- --- 0/0 66.5 66.8 67.2 0/24 66.7 67.0 67.6 0/24 65.4 65.8 66.1 0/24
Sep 21 --- --- --- 0/0 65.8 66.0 66.1 0/24 66.8 66.9 67.1 0/24 66.8 67.0 67.2 0/24 66.6 66.8 66.9 0/24 66.6 66.7 66.9 0/24 66.7 66.7 66.8 0/24 --- --- --- 0/0 66.4 66.7 67.1 0/24 66.8 67.1 67.3 0/24 65.6 65.9 66.2 0/24
Sep 22 --- --- --- 0/0 65.9 66.1 66.4 0/24 66.4 66.6 66.7 0/24 66.4 66.6 66.8 0/24 66.8 66.9 67.0 0/24 66.6 66.8 67.1 0/24 66.6 66.7 66.7 0/24 --- --- --- 0/0 66.4 66.7 67.6 0/24 66.8 67.0 67.3 0/24 65.8 66.1 66.5 0/24
Sep 23 --- --- --- 0/0 65.9 66.0 66.2 0/24 66.3 66.3 66.4 0/12 66.2 66.3 66.4 0/24 66.7 66.7 66.8 0/14 66.6 66.7 66.8 0/24 66.4 66.5 66.7 0/24 --- --- --- 0/0 66.2 66.5 66.7 0/24 66.3 66.7 67.0 0/24 65.9 66.1 66.3 0/24
Sep 24 --- --- --- 0/0 65.8 65.9 66.0 0/24 --- --- --- 0/0 65.9 66.1 66.2 0/24 --- --- --- 0/0 66.2 66.5 66.7 0/24 66.3 66.4 66.5 0/11 --- --- --- 0/0 65.9 66.2 66.5 0/24 65.8 66.1 66.3 0/13 64.9 65.2 65.9 0/24
Sep 25 --- --- --- 0/0 65.9 66.0 66.1 0/24 --- --- --- 0/0 65.8 65.9 66.0 0/24 --- --- --- 0/0 65.7 65.9 66.1 0/24 --- --- --- 0/0 --- --- --- 0/0 65.4 65.8 66.0 0/24 --- --- --- 0/0 64.4 64.7 64.8 0/24
Sep 26 --- --- --- 0/0 65.8 65.9 66.0 0/24 --- --- --- 0/0 65.6 65.7 65.8 0/24 --- --- --- 0/0 65.3 65.5 65.6 0/24 --- --- --- 0/0 --- --- --- 0/0 65.5 65.7 66.0 0/24 --- --- --- 0/0 63.9 64.1 64.3 0/24
Sep 27 --- --- --- 0/0 65.6 65.8 66.1 0/24 --- --- --- 0/0 65.5 65.7 65.8 0/24 --- --- --- 0/0 65.1 65.3 65.5 0/24 --- --- --- 0/0 --- --- --- 0/0 65.3 65.7 66.4 0/24 --- --- --- 0/0 63.6 64.0 64.3 0/24
Sep 28 --- --- --- 0/0 65.4 65.6 65.8 0/24 --- --- --- 0/0 65.7 65.8 65.9 0/24 --- --- --- 0/0 64.9 65.1 65.3 0/24 --- --- --- 0/0 --- --- --- 0/0 64.3 65.1 65.9 0/24 --- --- --- 0/0 63.9 64.4 64.9 0/24
Sep 29 --- --- --- 0/0 65.0 65.2 65.4 0/24 --- --- --- 0/0 65.7 65.8 65.9 0/24 --- --- --- 0/0 65.2 65.4 65.6 0/24 --- --- --- 0/0 --- --- --- 0/0 64.3 64.7 65.4 0/24 --- --- --- 0/0 64.2 64.7 65.2 0/24
Sep 30 --- --- --- 0/0 64.7 64.8 64.9 0/24 --- --- --- 0/0 65.6 65.7 65.8 0/24 --- --- --- 0/0 65.3 65.5 65.7 0/24 --- --- --- 0/0 --- --- --- 0/0 64.4 64.7 65.4 0/24 --- --- --- 0/0 64.6 65.0 65.4 0/24
>68.05 10 10 10 227/
227		 9 11 11 253/
720		 14 15 15 355/
540		 14 15 15 356/
720		 14 14 15 337/
542		 13 14 15 338/
720		 9 9 12 232/
563		 2 2 2 36/
36		 7 8 12 198/
720		 7 7 8 176/
565		 4 6 7 144/
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.