Lower Columbia River Temperature Report for April 2023  
Generated 2023-05-01 13:18:07

  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 43.2 43.4 43.5 0/24 43.4 43.6 43.9 0/24 --- --- --- 0/0 43.7 43.8 44.0 0/24 --- --- --- 0/0 43.8 44.0 44.3 0/24 --- --- --- 0/0 --- --- --- 0/0 44.0 44.0 44.1 0/24 --- --- --- 0/0 42.7 43.4 44.3 0/24
04 02 43.2 43.3 43.4 0/24 43.4 43.6 43.9 0/24 --- --- --- 0/0 43.8 43.9 44.1 0/24 --- --- --- 0/0 44.0 44.2 44.5 0/24 --- --- --- 0/0 --- --- --- 0/0 44.0 44.1 44.4 0/24 --- --- --- 0/0 42.7 43.4 44.2 0/24
04 03 43.3 43.4 43.6 0/24 43.4 43.6 43.9 0/24 --- --- --- 0/0 43.9 44.0 44.3 0/24 --- --- --- 0/0 44.0 44.3 44.6 0/24 --- --- --- 0/0 --- --- --- 0/0 44.0 44.3 44.6 0/24 --- --- --- 0/0 42.8 43.3 44.1 0/24
04 04 43.5 43.7 43.8 0/24 43.7 43.9 44.3 0/24 --- --- --- 0/0 44.0 44.2 44.4 0/24 --- --- --- 0/0 43.9 44.3 44.7 0/24 44.3 44.5 44.7 0/7 44.4 44.6 44.7 0/12 44.3 44.5 45.3 0/24 --- --- --- 0/0 43.1 43.7 44.6 0/24
04 05 43.7 44.0 44.5 0/24 44.0 44.2 44.6 0/24 44.0 44.2 44.4 0/10 44.1 44.3 44.5 0/24 44.8 44.9 45.1 0/8 44.3 44.6 44.9 0/24 44.7 44.8 45.0 0/20 44.7 44.9 45.2 0/24 44.5 44.9 45.4 0/24 --- --- --- 0/0 43.3 44.1 45.0 0/24
04 06 44.1 44.5 45.2 0/24 44.4 44.7 44.9 0/24 44.2 44.7 45.4 0/24 44.3 44.5 44.7 0/23 44.8 44.9 45.1 0/24 44.9 45.0 45.1 0/24 45.0 45.0 45.1 0/11 45.2 45.2 45.2 0/24 45.0 45.2 45.4 0/24 --- --- --- 0/0 43.9 44.3 44.9 0/24
04 07 44.6 45.1 45.7 0/24 44.8 45.1 45.4 0/24 44.4 44.6 45.0 0/24 44.4 44.5 44.7 0/24 45.0 45.2 45.5 0/24 45.1 45.3 45.6 0/24 45.0 45.1 45.3 0/24 45.2 45.3 45.5 0/24 45.0 45.2 45.4 0/24 --- --- --- 0/0 44.4 44.7 45.3 0/24
04 08 45.0 45.1 45.4 0/24 45.0 45.1 45.3 0/24 44.4 44.5 44.8 0/24 44.3 44.5 44.7 0/24 45.3 45.5 45.7 0/24 45.2 45.5 45.7 0/24 45.3 45.5 45.7 0/24 45.4 45.6 45.8 0/24 45.0 45.4 45.7 0/24 --- --- --- 0/0 44.4 44.9 45.4 0/24
04 09 45.2 45.4 45.6 0/24 45.2 45.5 45.8 0/24 44.7 44.9 45.2 0/24 44.6 44.7 45.0 0/24 45.4 45.5 45.7 0/24 45.6 45.7 45.8 0/24 45.8 45.9 46.0 0/24 45.8 46.0 46.1 0/24 45.6 45.8 46.0 0/24 --- --- --- 0/0 44.6 44.9 45.5 0/24
04 10 45.5 45.7 46.0 0/24 45.6 45.9 46.1 0/24 45.2 45.4 45.7 0/24 45.1 45.2 45.3 0/24 45.4 45.5 45.5 0/24 45.5 45.6 45.6 0/24 45.8 45.9 46.0 0/24 46.0 46.1 46.2 0/24 45.9 46.0 46.2 0/24 --- --- --- 0/0 45.0 45.2 45.6 0/24
04 11 45.6 45.9 46.3 0/24 45.8 46.0 46.2 0/24 45.2 45.4 45.7 0/24 45.3 45.5 45.8 0/24 45.4 45.7 46.1 0/24 45.4 45.7 46.0 0/24 45.8 45.9 46.1 0/24 45.9 46.1 46.3 0/24 45.8 46.0 46.2 0/24 --- --- --- 0/0 45.3 45.8 46.6 0/24
04 12 46.0 46.2 46.4 0/24 46.1 46.3 46.6 0/24 45.4 45.7 45.9 0/24 45.7 45.8 46.0 0/24 45.9 46.2 46.6 0/24 45.6 46.1 46.5 0/24 45.7 45.9 46.1 0/24 45.8 46.0 46.2 0/24 45.8 46.0 46.2 0/24 --- --- --- 0/0 44.9 45.6 46.5 0/24
04 13 46.0 46.2 46.6 0/24 46.3 46.4 46.6 0/24 45.9 46.1 46.3 0/24 46.1 46.3 46.5 0/24 46.2 46.3 46.6 0/24 46.0 46.3 46.6 0/24 45.6 45.8 46.1 0/24 45.8 46.0 46.3 0/24 45.7 46.0 46.4 0/24 --- --- --- 0/0 45.1 45.7 46.1 0/24
04 14 46.5 46.7 47.0 0/24 46.6 47.0 47.4 0/24 46.3 46.4 46.9 0/24 46.4 46.6 46.9 0/24 46.4 46.7 47.0 0/24 46.2 46.7 47.3 0/24 46.0 46.4 46.9 0/24 46.2 46.5 47.0 0/24 46.0 46.4 46.9 0/24 --- --- --- 0/0 45.4 45.9 46.5 0/24
04 15 46.7 47.2 48.0 0/24 47.1 47.5 47.8 0/24 46.6 46.9 47.0 0/24 46.7 46.9 47.1 0/24 46.9 47.2 47.5 0/24 46.8 47.2 47.7 0/24 46.6 46.8 47.1 0/24 46.7 47.0 47.3 0/24 46.7 46.9 47.2 0/24 --- --- --- 0/0 45.8 46.2 46.5 0/24
04 16 47.3 47.4 48.2 0/24 47.4 47.6 47.8 0/24 46.9 47.0 47.1 0/24 46.9 47.0 47.0 0/24 47.1 47.4 47.6 0/24 47.2 47.4 47.7 0/24 46.9 47.1 47.3 0/24 47.0 47.2 47.5 0/24 47.0 47.2 47.3 0/24 --- --- --- 0/0 45.9 46.2 46.5 0/24
04 17 47.2 47.4 47.8 0/24 47.2 47.5 48.0 0/24 46.8 47.0 47.5 0/24 46.9 47.1 47.5 0/24 47.2 47.4 47.6 0/24 47.1 47.4 47.6 0/24 47.1 47.3 47.5 0/24 47.2 47.4 47.6 0/24 47.2 47.3 47.5 0/24 --- --- --- 0/0 45.3 45.8 46.3 0/24
04 18 47.6 47.6 47.8 0/24 47.7 47.8 48.0 0/24 47.2 47.3 47.5 0/24 47.2 47.4 47.6 0/24 47.2 47.5 47.8 0/24 46.9 47.4 47.7 0/24 47.2 47.4 47.6 0/24 47.3 47.5 47.8 0/24 47.2 47.4 47.6 0/24 --- --- --- 0/0 45.4 46.2 47.0 0/24
04 19 47.1 47.5 47.9 0/24 47.5 47.6 47.9 0/24 47.5 47.6 47.8 0/24 47.5 47.6 47.8 0/24 47.6 47.9 48.3 0/24 47.4 47.8 48.2 0/24 47.4 47.6 47.7 0/24 47.5 47.7 47.9 0/24 47.5 47.6 47.8 0/24 --- --- --- 0/0 45.8 46.4 47.2 0/24
04 20 47.1 47.3 47.7 0/24 47.4 47.5 47.7 0/24 47.6 47.8 48.1 0/24 47.6 47.8 48.0 0/24 47.8 47.9 48.1 0/24 47.6 47.9 48.1 0/24 47.4 47.5 47.7 0/24 47.6 47.7 47.8 0/24 47.4 47.6 47.7 0/24 --- --- --- 0/0 45.6 46.2 46.7 0/24
04 21 47.2 47.5 47.9 0/24 47.4 47.6 47.8 0/24 47.9 48.0 48.2 0/24 47.9 48.0 48.1 0/24 47.8 48.1 48.6 0/24 47.6 48.1 48.5 0/24 47.3 47.6 48.0 0/24 47.5 47.7 48.2 0/24 47.5 47.7 48.0 0/24 --- --- --- 0/0 45.5 46.0 46.7 0/24
04 22 47.4 47.5 47.7 0/24 47.5 47.9 48.1 0/24 48.1 48.4 49.7 0/24 48.1 48.5 49.1 0/24 48.3 48.6 48.9 0/24 48.3 48.7 49.2 0/24 48.0 48.2 48.7 0/24 48.1 48.4 48.8 0/24 48.0 48.3 48.7 0/24 --- --- --- 0/0 45.9 46.4 47.1 0/24
04 23 47.6 48.2 48.8 0/24 48.1 48.5 49.1 0/24 48.5 48.9 49.4 0/24 48.6 48.9 49.1 0/24 48.8 49.4 50.0 0/24 49.0 49.4 50.0 0/24 48.5 48.8 49.1 0/24 48.7 48.9 49.2 0/24 48.7 48.8 49.0 0/24 --- --- --- 0/0 46.9 47.6 48.7 0/24
04 24 48.0 48.2 48.7 0/24 48.1 48.4 48.7 0/24 48.5 48.8 49.0 0/24 48.6 48.9 49.1 0/24 49.5 49.8 50.3 0/24 49.4 49.8 50.3 0/24 48.9 49.2 49.6 0/24 49.1 49.4 49.8 0/24 49.0 49.2 49.6 0/24 --- --- --- 0/0 47.4 48.1 48.7 0/24
04 25 48.5 48.8 49.0 0/24 48.5 49.0 49.5 0/24 49.0 49.2 49.6 0/24 49.1 49.3 49.5 0/24 49.6 49.8 50.1 0/24 49.4 49.9 50.5 0/24 49.4 49.8 50.6 0/24 49.6 50.0 50.7 0/24 49.4 49.8 50.4 0/24 --- --- --- 0/0 47.8 48.6 49.4 0/24
04 26 48.9 49.4 50.2 0/24 49.4 49.9 50.4 0/24 49.3 50.0 50.7 0/24 49.5 49.8 50.1 0/24 49.8 50.2 50.6 0/24 49.7 50.3 50.9 0/24 50.3 50.6 51.2 0/24 50.4 50.8 51.3 0/24 50.3 50.7 51.2 0/24 --- --- --- 0/0 48.7 49.3 50.0 0/24
04 27 49.8 50.3 52.5 0/24 50.2 50.7 51.1 0/24 49.7 50.8 52.8 0/24 49.7 50.4 51.2 0/24 50.3 50.8 51.3 0/24 50.3 50.9 51.7 0/24 50.8 51.1 51.5 0/24 50.9 51.3 51.7 0/24 51.0 51.3 51.7 0/24 --- --- --- 0/0 49.0 49.6 50.3 0/24
04 28 50.8 51.5 52.2 0/24 50.9 51.4 51.9 0/24 51.1 51.8 53.1 0/24 50.8 51.3 51.8 0/24 50.7 51.2 51.6 0/24 50.6 51.2 51.9 0/24 51.2 51.5 52.0 0/24 51.3 51.6 52.1 0/24 51.2 51.7 52.1 0/24 --- --- --- 0/0 49.8 50.5 51.2 0/24
04 29 51.2 51.7 52.3 0/24 51.4 51.8 52.2 0/24 51.5 52.0 52.5 0/24 51.1 51.4 51.8 0/24 51.5 52.0 52.3 0/24 51.4 52.0 52.6 0/24 51.6 52.0 52.5 0/24 51.7 52.1 52.6 0/24 51.7 52.3 52.9 0/24 --- --- --- 0/0 50.3 51.1 52.0 0/24
04 30 51.7 52.2 53.7 0/24 51.9 52.3 52.6 0/24 51.5 52.0 52.4 0/24 51.0 51.5 52.2 0/24 52.1 52.3 52.6 0/24 52.1 52.4 52.8 0/24 52.1 52.2 52.6 0/24 52.2 52.4 52.7 0/24 52.1 52.4 52.6 0/24 --- --- --- 0/0 51.4 52.3 53.5 0/24
>68.05 0 0 0 0/
720		 0 0 0 0/
720		 0 0 0 0/
610		 0 0 0 0/
719		 0 0 0 0/
608		 0 0 0 0/
720		 0 0 0 0/
614		 0 0 0 0/
636		 0 0 0 0/
720		 0 0 0 0/
0		 0 0 0 0/
720

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.