Lower Columbia River Temperature Report for May 2020  
Generated Mon Jun 1 06:18:05 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
May 1 51.9 52.3 53.0 0/24 52.3 52.6 53.1 0/24 54.2 54.4 54.7 0/24 54.3 54.6 55.0 0/24 54.7 54.8 55.1 0/24 54.6 54.7 54.9 0/24 54.6 54.8 55.1 0/24 54.7 54.9 55.2 0/24 54.6 54.9 55.3 0/24 54.5 55.0 55.5 0/24 50.3 50.9 51.4 0/24
May 2 52.6 53.1 53.5 0/24 53.1 53.3 53.6 0/24 54.2 54.6 54.8 0/24 54.4 54.7 54.9 0/24 55.0 55.1 55.2 0/24 54.9 55.0 55.1 0/24 54.7 54.9 55.0 0/24 54.8 55.0 55.1 0/24 54.9 55.1 55.1 0/24 54.8 55.0 55.1 0/24 50.8 51.1 51.6 0/24
May 3 53.0 53.3 53.6 0/24 53.5 53.5 53.6 0/24 54.1 54.3 54.4 0/24 54.2 54.4 54.5 0/24 54.7 54.9 55.1 0/24 54.7 54.8 55.0 0/24 54.6 54.9 55.1 0/24 54.7 54.9 55.2 0/24 54.7 55.0 55.4 0/24 54.6 55.0 55.7 0/24 50.1 50.7 51.5 0/24
May 4 52.6 53.1 53.6 0/24 53.3 53.4 53.6 0/24 54.3 54.4 54.9 0/24 54.4 54.5 54.7 0/24 54.7 54.9 55.2 0/24 54.7 54.8 55.0 0/24 54.9 55.0 55.1 0/24 55.0 55.1 55.2 0/24 55.0 55.2 55.4 0/24 54.6 55.2 55.8 0/24 50.2 50.8 51.4 0/24
May 5 52.6 53.1 53.7 0/24 53.1 53.4 53.7 0/24 54.2 54.4 55.1 0/24 54.2 54.4 54.5 0/24 54.9 55.1 55.2 0/24 54.9 55.0 55.1 0/24 54.9 55.2 55.5 0/24 55.0 55.3 55.6 0/24 55.0 55.4 55.9 0/24 55.1 55.7 56.5 0/24 50.4 50.9 51.5 0/24
May 6 52.8 53.0 53.4 0/24 53.1 53.2 53.5 0/24 53.9 54.0 54.2 0/24 54.0 54.1 54.2 0/24 54.7 54.9 55.2 0/24 54.6 54.8 55.0 0/24 55.1 55.2 55.3 0/24 55.1 55.3 55.4 0/24 55.2 55.4 55.7 0/24 55.2 55.8 56.2 0/24 50.3 50.8 51.2 0/24
May 7 52.4 53.0 55.6 0/24 52.8 53.2 54.0 0/24 54.1 54.7 55.7 0/24 54.3 54.8 55.5 0/24 54.4 54.7 55.3 0/24 54.4 54.6 55.0 0/24 54.8 55.0 55.3 0/24 54.9 55.1 55.4 0/24 54.9 55.2 55.6 0/24 54.9 55.5 56.2 0/24 49.9 50.4 50.9 0/24
May 8 52.4 52.9 53.3 0/24 52.8 53.1 53.7 0/24 55.2 55.4 55.9 0/24 55.1 55.4 55.7 0/24 55.2 55.5 56.0 0/24 55.1 55.4 55.8 0/24 37.0 54.2 55.2 0/24 54.9 55.1 55.3 0/24 54.9 55.2 55.5 0/24 54.9 55.6 56.4 0/24 50.2 50.7 51.4 0/24
May 9 52.4 53.1 53.8 0/24 52.9 53.3 53.8 0/24 55.0 55.4 56.8 0/24 55.1 55.3 55.6 0/24 55.4 55.7 56.0 0/24 55.5 55.7 55.8 0/24 55.3 55.8 56.1 0/24 55.3 55.9 56.2 0/24 55.3 55.9 56.4 0/24 55.1 56.0 57.1 0/24 50.8 51.5 52.2 0/24
May 10 52.8 53.4 54.2 0/24 53.2 53.6 54.2 0/24 55.0 55.4 56.5 0/24 55.0 55.4 56.3 0/24 55.5 55.7 56.0 0/24 55.6 55.7 55.9 0/24 56.1 56.3 56.5 0/24 56.2 56.4 56.6 0/24 56.2 56.6 57.0 0/24 56.2 56.8 57.7 0/24 51.2 51.7 52.1 0/24
May 11 52.9 53.3 53.8 0/24 53.2 53.6 53.9 0/24 55.1 55.3 55.7 0/24 55.2 55.3 55.6 0/24 55.5 55.8 56.0 0/24 55.6 55.7 55.9 0/24 56.0 56.3 56.5 0/24 56.0 56.4 56.6 0/24 56.2 56.6 57.0 0/24 56.6 57.0 57.4 0/24 51.3 51.8 52.2 0/24
May 12 52.9 53.2 53.5 0/24 53.2 53.4 53.8 0/24 54.9 55.0 55.1 0/24 55.0 55.1 55.2 0/24 55.4 55.6 55.7 0/24 55.3 55.4 55.6 0/24 55.7 55.9 56.0 0/24 55.8 56.0 56.1 0/24 55.8 56.1 56.2 0/24 56.0 56.4 56.8 0/24 51.5 51.8 52.1 0/24
May 13 53.0 53.1 53.5 0/24 53.1 53.3 53.5 0/24 54.9 54.9 55.0 0/24 55.0 55.1 55.1 0/24 55.1 55.5 55.7 0/24 55.1 55.4 55.5 0/24 55.6 55.7 55.8 0/24 55.6 55.7 55.8 0/24 55.7 55.8 55.8 0/24 55.7 56.1 56.5 0/24 51.4 52.1 52.9 0/24
May 14 53.1 53.4 54.0 0/24 53.2 53.5 54.0 0/24 54.8 54.9 55.1 0/24 54.8 55.0 55.1 0/24 55.2 55.5 55.7 0/24 55.1 55.3 55.5 0/24 55.6 55.7 55.9 0/24 55.6 55.7 55.9 0/24 55.7 55.8 55.9 0/24 55.6 55.9 56.2 0/24 51.9 52.4 52.8 0/24
May 15 53.5 53.8 54.2 0/24 53.8 54.0 54.3 0/24 54.5 54.6 54.8 0/24 54.6 54.7 54.8 0/24 55.0 55.3 55.5 0/24 54.9 55.2 55.4 0/24 55.4 55.7 56.0 0/24 55.4 55.7 56.0 0/24 55.6 55.8 56.0 0/24 55.5 56.0 56.8 0/24 51.9 52.7 53.6 0/24
May 16 53.6 53.9 54.3 0/24 53.8 54.1 54.3 0/24 54.6 54.7 54.9 0/24 54.6 54.8 55.0 0/24 54.8 55.0 55.5 0/24 54.8 54.9 55.3 0/24 55.4 55.6 56.0 0/24 55.5 55.7 56.0 0/24 55.6 55.8 56.0 0/24 55.8 56.1 56.5 0/24 52.5 53.0 53.5 0/24
May 17 53.9 54.1 54.4 0/24 54.0 54.2 54.5 0/24 54.6 54.7 54.9 0/24 54.7 54.8 54.9 0/24 54.9 55.1 55.3 0/24 54.9 55.0 55.1 0/24 55.2 55.4 55.6 0/24 55.2 55.4 55.6 0/24 55.4 55.5 55.6 0/24 55.5 56.1 57.0 0/24 52.6 52.9 53.3 0/24
May 18 54.1 54.3 54.6 0/24 54.3 54.5 54.7 0/24 54.6 54.8 55.0 0/24 54.8 54.9 55.1 0/24 54.9 55.2 55.4 0/24 54.9 55.0 55.2 0/24 55.3 55.3 55.4 0/24 55.3 55.3 55.4 0/24 55.3 55.4 55.5 0/24 55.3 55.6 55.9 0/24 52.3 52.8 53.3 0/24
May 19 53.9 54.1 54.5 0/24 54.1 54.3 54.5 0/24 54.9 55.0 55.1 0/24 55.0 55.1 55.2 0/24 55.1 55.3 55.5 0/24 55.1 55.2 55.3 0/24 55.0 55.1 55.3 0/24 55.0 55.2 55.3 0/24 55.1 55.2 55.3 0/24 55.2 55.4 55.6 0/24 52.5 52.9 53.2 0/24
May 20 54.0 54.3 54.5 0/24 54.2 54.4 54.5 0/24 54.8 54.9 55.0 0/24 54.9 55.0 55.1 0/24 54.9 55.2 55.4 0/24 54.9 55.1 55.3 0/24 55.1 55.2 55.3 0/24 55.1 55.2 55.3 0/17 55.2 55.2 55.3 0/24 55.0 55.1 55.3 0/24 52.3 52.7 53.0 0/24
May 21 53.5 53.7 54.0 0/24 53.7 53.9 54.1 0/24 55.0 55.1 55.2 0/24 55.2 55.2 55.2 0/24 55.0 55.3 55.6 0/24 55.0 55.2 55.4 0/24 55.1 55.2 55.3 0/24 --- --- --- 0/0 55.1 55.2 55.2 0/24 55.0 55.3 55.6 0/24 52.4 53.1 53.9 0/24
May 22 53.3 53.6 54.1 0/24 53.5 53.8 54.1 0/24 54.9 55.0 55.1 0/24 55.0 55.1 55.2 0/24 54.9 55.2 55.5 0/24 54.9 55.2 55.4 0/24 55.0 55.3 55.5 0/24 --- --- --- 0/0 55.1 55.3 55.5 0/24 54.9 55.3 55.9 0/24 52.7 53.1 53.5 0/24
May 23 53.3 53.6 54.2 0/24 53.4 53.8 54.2 0/24 54.7 54.7 54.8 0/24 54.7 54.8 54.9 0/24 54.9 55.3 55.5 0/24 54.9 55.2 55.3 0/24 55.1 55.3 55.6 0/24 --- --- --- 0/0 55.2 55.4 55.5 0/24 55.2 55.5 55.9 0/24 52.6 53.5 54.5 0/24
May 24 53.4 53.8 54.7 0/24 53.6 54.1 54.8 0/24 54.6 54.7 55.0 0/24 54.7 54.8 55.1 0/24 54.9 55.3 55.7 0/24 54.8 55.1 55.5 0/24 55.3 55.6 55.9 0/24 --- --- --- 0/0 55.5 55.7 55.8 0/24 55.1 55.9 56.9 0/24 53.7 54.4 55.2 0/24
May 25 54.5 54.7 55.0 0/24 54.6 54.8 55.0 0/24 54.5 54.7 54.9 0/24 54.6 54.8 54.9 0/24 55.0 55.3 55.7 0/24 54.9 55.1 55.5 0/24 55.4 55.6 55.9 0/24 --- --- --- 0/0 55.6 55.7 56.0 0/24 55.7 56.0 56.5 0/24 54.1 54.4 54.9 0/24
May 26 54.8 54.9 55.2 0/24 55.0 55.2 55.5 0/24 54.8 55.0 55.2 0/24 54.9 55.2 55.4 0/24 55.2 55.6 56.1 0/24 55.1 55.4 55.9 0/24 55.6 55.8 56.0 0/24 55.7 55.9 56.0 0/11 55.7 56.0 56.2 0/24 55.6 56.3 57.3 0/24 54.2 54.9 55.8 0/24
May 27 55.1 55.7 56.7 0/24 55.2 55.8 56.5 0/24 55.2 55.5 56.6 0/24 55.3 55.6 56.0 0/24 55.7 56.0 56.5 0/24 55.6 55.9 56.2 0/24 56.0 56.2 56.6 0/24 56.0 56.2 56.7 0/24 56.0 56.3 56.6 0/24 55.9 56.7 57.7 0/24 54.7 55.4 56.1 0/24
May 28 55.5 55.9 56.4 0/24 55.7 56.0 56.4 0/22 55.7 56.1 56.7 0/24 55.9 56.1 56.6 0/24 56.1 56.5 56.9 0/24 56.0 56.3 56.6 0/24 56.4 56.7 57.0 0/24 56.4 56.7 57.0 0/24 56.6 56.8 57.0 0/24 56.4 57.3 58.3 0/24 55.0 55.7 56.4 0/24
May 29 55.9 56.3 57.2 0/24 55.9 56.4 57.1 0/24 56.6 57.0 57.7 0/24 56.6 57.0 57.6 0/24 56.5 57.0 57.8 0/24 56.4 56.8 57.5 0/24 56.9 57.2 57.5 0/24 56.9 57.2 57.6 0/24 57.0 57.3 57.7 0/24 56.9 57.6 58.5 0/24 55.2 55.9 56.7 0/24
May 30 56.2 56.4 56.6 0/24 56.4 56.5 56.7 0/24 57.1 57.4 57.8 0/24 57.2 57.4 57.6 0/24 57.6 57.8 58.0 0/24 57.4 57.7 57.9 0/24 56.2 57.4 57.7 0/24 57.2 57.4 57.7 0/24 57.3 57.4 57.6 0/24 57.2 57.5 57.7 0/24 55.6 56.2 56.7 0/24
May 31 56.3 56.4 56.6 0/24 56.4 56.5 56.6 0/24 57.0 57.2 57.4 0/24 57.2 57.3 57.5 0/24 57.1 57.5 57.9 0/24 57.1 57.4 57.8 0/24 57.4 57.7 58.0 0/24 57.5 57.7 58.0 0/24 57.5 57.7 58.0 0/24 57.1 57.6 58.3 0/24 55.2 56.0 56.8 0/24
>68.05 0 0 0 0/
744		 0 0 0 0/
742		 0 0 0 0/
744		 0 0 0 0/
744		 0 0 0 0/
744		 0 0 0 0/
744		 0 0 0 0/
744		 0 0 0 0/
604		 0 0 0 0/
744		 0 0 0 0/
744		 0 0 0 0/
744

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.