Lower Columbia River Temperature Report for May 2026  
Generated 2026-05-01 11:27:09

  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
05 01 52.6 52.9 53.4 0/11 52.9 53.0 53.1 0/11 53.3 53.4 53.5 0/11 53.4 53.5 53.6 0/11 53.5 53.7 53.8 0/11 53.6 53.7 53.8 0/11 53.5 53.5 53.7 0/11 53.4 53.5 53.6 0/11 53.6 53.7 53.8 0/11 --- --- --- 0/0 51.2 51.5 51.9 0/11
05 02 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 03 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 04 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 05 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 06 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 07 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 08 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 09 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 10 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 11 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 12 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 13 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 14 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 15 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 16 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 17 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 18 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 19 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 20 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 21 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 22 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 23 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 24 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 25 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 26 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 27 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 28 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 29 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 30 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
05 31 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
>68.05 0 0 0 0/
11		 0 0 0 0/
11		 0 0 0 0/
11		 0 0 0 0/
11		 0 0 0 0/
11		 0 0 0 0/
11		 0 0 0 0/
11		 0 0 0 0/
11		 0 0 0 0/
11		 0 0 0 0/
0		 0 0 0 0/
11

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

Bold, red text denotes values above 68.05°F.
--- indicates No Data

NOTICE: This report is based on raw, unverified data.