Lower Columbia River Temperature Report for July 2026  
Generated 2026-07-13 17:27:09

  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
07 01 64.0 64.1 64.2 0/24 63.9 64.2 64.5 0/24 65.4 65.5 65.8 0/24 65.7 65.8 66.0 0/24 65.3 65.5 65.7 0/24 65.4 65.6 65.8 0/24 64.7 64.9 65.0 0/24 64.8 65.0 65.1 0/24 64.7 64.8 65.1 0/24 --- --- --- 0/0 62.7 63.1 63.6 0/24
07 02 64.0 64.0 64.6 0/24 64.0 64.2 64.5 0/24 65.2 65.2 65.4 0/24 65.5 65.6 65.7 0/24 65.3 65.5 65.6 0/24 65.3 65.6 65.8 0/24 64.8 65.1 65.4 0/24 64.9 65.2 65.5 0/24 64.8 65.1 65.6 0/24 --- --- --- 0/0 62.9 63.1 63.3 0/24
07 03 64.1 64.5 64.9 0/24 64.4 64.7 65.1 0/24 65.1 65.3 65.4 0/24 65.5 65.6 65.8 0/24 65.5 65.7 66.0 0/24 65.5 65.8 66.1 0/24 65.4 65.7 66.2 0/24 65.5 65.8 66.3 0/24 65.4 65.8 66.4 0/24 --- --- --- 0/0 63.0 63.6 64.4 0/24
07 04 64.3 64.6 65.0 0/24 64.7 65.0 65.3 0/24 65.2 65.3 65.4 0/24 65.6 65.7 65.7 0/24 65.9 66.1 66.3 0/24 65.8 66.2 66.5 0/24 66.0 66.2 66.5 0/24 66.1 66.3 66.6 0/24 65.9 66.3 66.7 0/24 --- --- --- 0/0 64.3 64.6 65.2 0/24
07 05 64.6 65.3 66.6 0/24 64.8 65.6 66.4 0/24 65.2 65.5 66.3 0/24 65.6 65.8 66.4 0/24 66.0 66.1 66.3 0/24 65.9 66.3 66.7 0/24 66.2 66.5 66.8 0/24 66.3 66.5 66.9 0/24 66.2 66.6 67.0 0/24 --- --- --- 0/0 64.8 65.0 65.2 0/24
07 06 65.9 66.5 67.9 0/24 66.0 66.4 67.0 0/24 65.8 66.0 66.5 0/24 66.1 66.3 66.7 0/24 66.1 66.3 66.5 0/24 66.1 66.5 66.8 0/24 66.5 66.9 67.4 0/24 66.6 67.0 67.5 0/24 66.5 67.0 67.8 0/24 --- --- --- 0/0 64.8 65.1 65.7 0/24
07 07 66.5 66.6 67.0 0/24 66.6 66.8 67.0 0/24 66.0 66.3 66.6 0/24 66.0 66.4 66.6 0/24 66.4 66.7 67.2 0/24 66.4 66.7 67.1 0/24 67.0 67.1 67.4 0/24 67.0 67.2 67.4 0/24 67.0 67.3 67.7 0/24 --- --- --- 0/0 64.9 65.2 65.6 0/24
07 08 66.3 66.5 66.7 0/24 66.5 66.8 67.1 0/24 65.9 66.2 66.6 0/24 65.9 66.3 66.6 0/24 66.6 66.9 67.1 0/24 66.7 67.0 67.3 0/24 66.8 67.0 67.4 0/24 66.8 67.1 67.4 0/24 66.7 67.2 67.6 0/24 --- --- --- 0/0 57.1 65.5 66.2 0/24
07 09 66.5 66.8 67.4 0/24 66.6 67.2 67.6 0/24 66.3 66.5 66.8 0/24 66.6 66.8 67.0 0/24 66.3 66.7 67.2 0/24 66.3 66.7 67.2 0/24 66.7 67.0 67.3 0/24 66.7 67.0 67.3 0/24 66.9 67.1 67.4 0/24 --- --- --- 0/0 65.9 66.2 66.5 0/24
07 10 67.0 67.4 67.8 0/24 67.5 67.8 68.2 3/24 66.7 67.0 67.3 0/24 67.0 67.2 67.4 0/24 66.8 67.2 67.5 0/24 66.7 67.2 67.6 0/24 66.8 67.2 67.6 0/24 66.8 67.2 67.6 0/24 67.0 67.3 67.6 0/24 --- --- --- 0/0 66.0 66.4 66.8 0/24
07 11 67.5 67.8 68.0 0/24 67.5 68.0 68.4 15/24 67.1 67.3 67.7 0/24 67.4 67.6 67.7 0/24 67.2 67.6 68.1 1/24 67.1 67.5 68.0 0/24 66.9 67.3 67.6 0/24 66.9 67.3 67.6 0/24 67.2 67.4 67.6 0/24 --- --- --- 0/0 66.4 66.9 67.5 0/24
07 12 67.9 68.1 68.3 13/24 68.1 68.3 68.6 24/24 67.3 67.5 68.0 0/24 67.7 67.8 68.0 0/24 67.5 67.8 68.2 4/24 67.4 67.8 68.3 8/24 67.1 67.5 67.9 0/24 67.1 67.4 67.9 0/24 67.2 67.5 67.7 0/24 --- --- --- 0/0 66.8 67.1 67.4 0/24
07 13 68.2 68.3 68.6 17/17 68.4 68.6 69.1 17/17 67.7 67.8 68.2 2/17 67.9 68.1 68.4 7/17 67.6 67.9 68.4 4/17 67.7 67.9 68.4 4/17 67.4 67.7 67.9 0/17 67.4 67.6 67.9 0/17 67.6 67.7 68.0 0/17 --- --- --- 0/0 66.5 67.0 67.6 0/17
07 14 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 15 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 16 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 17 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 18 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 19 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 20 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 21 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 22 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 23 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 24 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 25 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 26 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 27 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 28 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 29 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 30 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
07 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 1 2 2 30/
305
2 2 4 59/
305
0 0 1 2/
305
0 1 1 7/
305
0 0 3 9/
305
0 0 2 12/
305
0 0 0 0/
305
0 0 0 0/
305
0 0 0 0/
305
0 0 0 0/
0
0 0 0 0/
305

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.