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.