Lower Columbia River Temperature Report for April 2026  
Generated 2026-04-13 23:27:09

  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
04 01 46.0 46.2 46.6 0/24 46.0 46.1 46.2 0/24 46.8 46.9 47.1 0/24 47.0 47.1 47.2 0/24 47.1 47.2 47.3 0/24 47.0 47.1 47.2 0/24 47.1 47.2 47.3 0/24 47.1 47.2 47.4 0/24 47.0 47.2 47.3 0/24 --- --- --- 0/0 44.2 44.4 44.8 0/24
04 02 46.0 46.1 46.4 0/24 46.0 46.1 46.2 0/24 46.7 46.8 46.9 0/24 46.9 47.0 47.1 0/24 47.2 47.3 47.4 0/24 47.1 47.2 47.3 0/24 47.1 47.2 47.4 0/24 47.1 47.2 47.4 0/24 47.0 47.2 47.4 0/24 --- --- --- 0/0 44.3 44.7 45.1 0/24
04 03 46.0 46.3 47.1 0/24 45.9 46.2 46.6 0/24 46.5 46.6 46.7 0/24 46.8 47.1 52.4 0/24 47.1 47.3 47.4 0/24 47.1 47.2 47.3 0/24 47.2 47.5 47.9 0/24 47.2 47.5 47.9 0/24 47.2 47.5 47.8 0/24 --- --- --- 0/0 44.5 45.1 46.0 0/24
04 04 46.7 47.1 47.4 0/24 46.7 46.9 47.1 0/24 46.8 47.1 47.8 0/24 47.0 47.2 47.4 0/24 47.3 47.5 47.7 0/24 47.1 47.4 47.6 0/24 47.6 47.8 48.2 0/24 47.6 47.9 48.2 0/24 47.6 47.9 48.3 0/24 --- --- --- 0/0 45.2 45.7 46.3 0/24
04 05 46.9 47.4 48.3 0/24 46.9 47.3 47.7 0/24 47.1 47.4 47.9 0/24 47.3 47.4 47.6 0/24 47.7 47.8 47.9 0/24 47.5 47.7 47.9 0/24 47.8 48.1 48.4 0/24 47.9 48.2 48.5 0/24 47.9 48.2 48.5 0/24 --- --- --- 0/0 45.8 46.2 46.7 0/24
04 06 47.5 47.7 48.7 0/24 47.4 47.7 48.1 0/24 47.2 47.3 47.6 0/24 47.4 47.5 47.6 0/24 47.7 48.0 48.1 0/24 47.7 47.9 48.1 0/24 48.1 48.4 48.8 0/24 48.2 48.5 48.8 0/24 48.2 48.5 48.9 0/24 --- --- --- 0/0 46.0 46.6 47.3 0/24
04 07 47.7 48.3 48.8 0/24 47.8 48.2 48.5 0/24 47.2 47.4 47.5 0/24 47.5 47.7 47.9 0/24 48.2 48.4 48.6 0/24 48.0 48.3 48.5 0/24 48.5 48.7 49.0 0/24 48.6 48.8 49.0 0/24 48.5 48.8 49.2 0/24 --- --- --- 0/0 46.9 47.3 47.8 0/24
04 08 48.3 48.5 48.8 0/24 48.2 48.5 49.1 0/24 47.5 47.8 49.1 0/24 47.9 48.2 48.7 0/24 48.4 48.4 48.7 0/24 48.1 48.4 48.7 0/24 48.6 48.8 49.2 0/24 48.7 48.9 49.2 0/24 48.6 48.9 49.4 0/24 --- --- --- 0/0 47.0 47.5 48.2 0/24
04 09 48.8 49.6 50.8 0/24 49.0 49.4 50.0 0/24 48.3 49.2 50.7 0/24 48.5 48.8 49.3 0/24 48.5 48.8 49.0 0/24 48.4 48.7 49.1 0/24 48.9 49.1 49.4 0/24 49.0 49.2 49.5 0/24 48.9 49.2 49.7 0/24 --- --- --- 0/0 47.0 47.6 48.2 0/24
04 10 49.4 49.7 50.3 0/24 49.4 49.7 50.1 0/24 48.8 49.4 50.3 0/24 49.0 49.3 49.8 0/24 49.0 49.3 49.7 0/24 48.9 49.3 49.7 0/24 49.2 49.3 49.6 0/24 49.2 49.4 49.6 0/24 49.3 49.5 49.7 0/24 --- --- --- 0/0 47.5 47.8 48.3 0/24
04 11 49.2 49.4 49.8 0/24 49.3 49.5 49.8 0/24 49.3 49.5 50.1 0/24 49.5 49.6 49.7 0/24 49.7 49.9 50.1 0/24 49.5 49.8 50.1 0/24 49.6 49.8 50.1 0/24 49.6 49.8 50.2 0/24 49.7 49.9 50.4 0/24 --- --- --- 0/0 47.7 48.3 49.2 0/24
04 12 49.3 49.5 49.7 0/24 49.4 49.5 49.7 0/24 49.3 49.7 49.9 0/24 49.7 50.0 50.1 0/24 50.1 50.2 50.3 0/24 49.9 50.1 50.3 0/24 50.0 50.2 50.5 0/24 50.1 50.3 50.6 0/24 50.1 50.2 50.5 0/24 --- --- --- 0/0 48.3 48.5 48.8 0/24
04 13 49.4 49.7 50.1 0/23 49.3 49.7 50.0 0/23 49.7 50.0 50.1 0/23 50.1 50.3 50.4 0/23 50.3 50.5 50.6 0/23 50.2 50.4 50.6 0/23 50.4 50.6 50.9 0/23 50.5 50.6 50.9 0/23 50.4 50.6 50.9 0/23 --- --- --- 0/0 48.2 48.8 49.6 0/23
04 14 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 15 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 16 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 17 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 18 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 19 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 20 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 21 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 22 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 23 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 24 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 25 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 26 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 27 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 28 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 29 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
04 30 --- --- --- 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/
311		 0 0 0 0/
311		 0 0 0 0/
311		 0 0 0 0/
311		 0 0 0 0/
311		 0 0 0 0/
311		 0 0 0 0/
311		 0 0 0 0/
311		 0 0 0 0/
311		 0 0 0 0/
0		 0 0 0 0/
311

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.