Lower Columbia River Temperature Report for April 2020  
Generated Fri May 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
Apr 1 45.0 45.2 45.5 0/24 45.2 45.4 45.5 0/24 44.8 45.0 45.3 0/24 45.0 45.2 45.4 0/24 45.1 45.4 45.8 0/24 45.0 45.3 45.7 0/24 45.2 45.4 45.7 0/24 45.3 45.5 45.7 0/24 45.2 45.4 45.6 0/24 45.1 45.6 46.3 0/24 44.0 44.4 44.8 0/24
Apr 2 45.2 45.4 45.6 0/24 45.5 45.6 45.8 0/24 45.2 45.4 45.6 0/24 45.4 45.5 45.7 0/24 45.4 45.6 45.9 0/24 45.2 45.5 45.8 0/24 45.5 45.6 45.7 0/24 45.6 45.7 45.8 0/24 45.5 45.7 46.2 0/24 45.3 45.7 46.4 0/24 43.9 44.6 45.7 0/24
Apr 3 45.3 45.4 45.5 0/24 45.5 45.6 45.8 0/24 45.5 45.6 45.8 0/24 45.6 45.8 45.9 0/24 45.6 45.9 46.3 0/24 45.3 45.8 46.2 0/24 45.4 45.5 45.7 0/24 45.5 45.6 45.7 0/24 45.4 45.6 45.7 0/24 45.4 45.8 46.3 0/24 44.1 44.8 45.8 0/24
Apr 4 45.2 45.6 46.1 0/24 45.4 45.6 45.9 0/24 45.7 46.1 46.8 0/24 45.8 46.1 46.5 0/24 45.9 46.1 46.3 0/24 45.9 46.1 46.3 0/24 45.6 45.8 46.0 0/24 45.7 45.8 46.0 0/24 45.6 45.8 46.2 0/24 45.4 45.9 46.7 0/24 44.2 44.8 45.3 0/24
Apr 5 45.3 45.7 46.5 0/24 45.5 45.8 46.0 0/24 46.5 46.7 46.9 0/24 46.3 46.5 46.7 0/24 46.1 46.4 46.7 0/24 46.1 46.3 46.7 0/24 45.7 46.0 46.4 0/24 45.9 46.1 46.4 0/24 45.9 46.2 46.8 0/24 45.6 46.5 47.7 0/24 44.7 45.3 46.0 0/24
Apr 6 45.7 45.8 46.0 0/24 46.0 46.1 46.4 0/24 46.2 46.4 46.6 0/24 46.3 46.4 46.6 0/24 46.5 46.8 47.2 0/24 46.3 46.8 47.2 0/24 46.2 46.4 46.7 0/24 46.3 46.5 46.6 0/24 46.1 46.4 46.8 0/24 46.2 46.9 47.9 0/24 45.4 45.9 46.5 0/24
Apr 7 45.8 46.1 46.6 0/24 46.0 46.3 46.7 0/24 46.1 46.2 46.3 0/24 46.2 46.3 46.5 0/24 46.9 47.3 47.7 0/24 46.9 47.2 47.7 0/24 46.6 46.8 47.2 0/24 46.6 46.9 47.2 0/24 46.5 46.9 47.5 0/24 46.6 47.5 48.3 0/24 45.6 46.2 47.0 0/24
Apr 8 46.4 47.2 48.9 0/24 46.7 47.0 47.6 0/24 46.2 46.8 48.8 0/24 46.3 46.6 47.0 0/24 47.2 47.4 47.6 0/24 47.2 47.5 47.8 0/24 47.1 47.4 47.9 0/24 47.1 47.5 47.9 0/24 47.0 47.4 47.9 0/24 47.1 48.0 48.9 0/24 46.1 46.6 47.2 0/24
Apr 9 47.2 47.6 48.6 0/24 47.4 47.7 48.0 0/24 46.8 47.3 49.1 0/24 46.7 47.0 47.2 0/24 47.1 47.5 47.8 0/24 47.2 47.6 48.0 0/24 47.7 48.0 48.4 0/24 47.8 48.1 48.5 0/24 47.7 48.1 48.9 0/24 47.8 48.7 49.8 0/24 46.5 47.0 47.5 0/24
Apr 10 47.5 48.0 48.9 0/24 47.9 48.2 48.8 0/24 47.2 47.6 48.3 0/24 47.1 47.4 48.1 0/24 47.5 48.0 48.6 0/24 47.5 48.1 48.7 0/24 48.3 48.6 49.0 0/24 48.3 48.7 49.1 0/24 48.3 48.7 49.3 0/24 48.5 49.5 50.5 0/24 46.9 47.4 48.0 0/24
Apr 11 47.9 48.2 48.6 0/24 48.2 48.5 48.9 0/24 47.1 47.5 48.0 0/24 47.4 47.8 48.1 0/24 48.3 48.6 49.0 0/24 48.2 48.6 49.1 0/24 48.6 48.8 49.0 0/24 48.6 48.9 49.1 0/24 48.8 49.0 49.4 0/24 49.0 49.8 50.8 0/24 47.6 48.0 48.4 0/24
Apr 12 47.9 48.7 49.6 0/24 48.3 48.8 49.4 0/24 47.8 49.1 52.1 0/24 48.1 48.8 49.7 0/24 48.3 48.6 48.9 0/24 48.3 48.7 49.2 0/24 48.7 48.9 49.3 0/24 48.7 49.0 49.4 0/24 48.8 49.1 49.6 0/24 48.8 49.7 50.9 0/24 47.6 47.9 48.3 0/24
Apr 13 48.9 49.2 49.8 0/24 49.1 49.4 49.8 0/24 48.8 49.1 49.9 0/24 48.8 49.0 49.7 0/24 48.6 49.0 49.5 0/24 48.5 49.1 49.6 0/24 48.9 49.2 49.7 0/24 48.9 49.3 49.7 0/24 48.8 49.4 50.7 0/24 48.7 49.7 50.9 0/24 47.0 47.7 48.4 0/24
Apr 14 49.3 49.9 50.8 0/24 49.6 50.1 50.7 0/24 48.9 49.1 49.4 0/24 48.8 49.0 49.2 0/24 49.3 49.6 50.1 0/24 49.2 49.7 50.1 0/24 49.2 49.5 49.7 0/24 49.3 49.5 49.7 0/24 49.4 49.7 50.5 0/24 49.3 50.3 51.5 0/24 47.4 48.2 49.2 0/24
Apr 15 49.2 49.5 49.7 0/24 49.6 49.9 50.3 0/24 48.9 49.2 50.4 0/24 49.0 49.4 50.0 0/24 49.4 49.8 50.3 0/24 49.4 49.9 50.3 0/24 49.4 49.7 50.2 0/24 49.4 49.8 50.3 0/24 49.6 49.8 50.3 0/24 50.0 50.5 51.2 0/24 48.2 48.7 49.1 0/24
Apr 16 49.4 50.0 51.2 0/24 49.6 50.0 50.6 0/24 49.7 50.4 51.5 0/24 49.6 50.1 50.4 0/24 49.8 50.0 50.2 0/24 49.7 50.1 50.5 0/24 50.0 50.4 50.9 0/24 50.1 50.4 50.9 0/24 50.1 50.5 51.3 0/24 49.8 50.7 51.8 0/24 48.2 50.3 76.2 1/16
Apr 17 49.7 50.0 50.4 0/24 49.9 50.3 50.6 0/24 50.1 50.3 50.9 0/24 50.0 50.3 50.6 0/24 50.1 50.4 50.7 0/24 50.0 50.4 50.9 0/24 50.2 50.6 50.9 0/24 50.2 50.6 51.0 0/24 50.3 50.8 51.9 0/24 50.1 51.2 52.5 0/24 49.2 49.6 50.0 0/10
Apr 18 50.0 50.4 51.2 0/24 50.4 50.8 51.1 0/24 50.3 50.5 50.8 0/24 50.5 50.5 50.7 0/24 50.5 50.7 50.9 0/24 50.5 50.7 51.0 0/24 50.5 50.6 50.8 0/24 50.6 50.7 50.9 0/24 50.6 50.7 50.9 0/24 50.6 51.0 51.8 0/24 48.7 49.3 50.4 0/24
Apr 19 49.8 50.2 50.4 0/24 50.4 50.6 51.1 0/24 50.3 50.4 50.7 0/24 50.5 50.6 50.8 0/24 50.6 50.9 51.2 0/24 50.5 50.9 51.3 0/24 50.5 50.9 51.4 0/24 50.6 50.9 51.4 0/24 50.6 51.0 51.4 0/24 50.6 51.3 52.4 0/24 48.8 49.5 50.1 0/24
Apr 20 50.2 50.3 50.6 0/24 50.6 51.0 51.4 0/24 50.6 50.9 51.3 0/24 50.7 51.1 51.4 0/24 51.1 51.4 51.8 0/24 51.0 51.5 52.0 0/24 50.9 51.4 52.0 0/24 51.0 51.4 52.0 0/24 51.0 51.5 52.2 0/24 50.8 51.9 53.1 0/24 49.6 50.0 50.4 0/24
Apr 21 50.4 50.6 51.0 0/24 50.7 50.9 51.2 0/24 51.2 51.5 51.9 0/24 51.4 51.7 52.0 0/24 51.5 51.9 52.2 0/24 51.4 51.8 52.3 0/24 51.5 51.7 51.9 0/24 51.5 51.8 52.0 0/24 51.6 51.9 52.1 0/24 51.7 52.2 52.8 0/24 49.6 50.2 51.2 0/24
Apr 22 51.0 51.2 51.4 0/24 51.1 51.4 51.6 0/24 51.8 52.1 52.2 0/24 52.1 52.2 52.4 0/24 52.1 52.3 52.5 0/24 51.9 52.3 52.6 0/24 51.8 51.9 52.1 0/24 51.9 52.1 52.3 0/24 51.9 52.1 52.4 0/24 51.6 51.9 52.3 0/24 49.7 50.1 50.5 0/24
Apr 23 51.2 51.4 51.7 0/24 51.5 51.7 51.9 0/24 52.2 52.3 52.4 0/24 52.2 52.4 52.5 0/24 52.4 52.8 53.1 0/24 52.3 52.7 53.1 0/24 52.0 52.2 52.3 0/24 52.1 52.3 52.4 0/24 52.1 52.3 52.6 0/24 52.1 52.5 53.1 0/24 49.4 49.8 50.3 0/24
Apr 24 51.5 51.8 51.9 0/24 51.8 52.1 52.3 0/24 52.2 52.5 52.8 0/24 52.4 52.6 52.9 0/24 53.0 53.1 53.2 0/24 52.8 53.1 53.3 0/24 52.2 52.6 52.9 0/24 52.4 52.7 53.0 0/24 52.3 52.7 53.0 0/24 52.2 52.4 52.7 0/24 49.9 50.3 50.8 0/24
Apr 25 51.8 52.0 52.4 0/24 52.0 52.2 52.4 0/24 52.6 52.9 53.3 0/24 53.0 53.1 53.4 0/24 53.2 53.4 53.6 0/24 53.0 53.3 53.5 0/24 52.8 53.2 53.6 0/24 52.9 53.3 53.7 0/24 52.9 53.3 53.7 0/24 52.7 53.2 54.2 0/24 49.6 50.0 50.5 0/24
Apr 26 51.8 51.9 52.2 0/24 51.9 52.2 52.6 0/24 52.9 53.0 53.1 0/24 53.1 53.2 53.3 0/24 53.5 53.6 53.8 0/24 53.3 53.6 53.9 0/24 53.4 53.6 53.8 0/24 53.5 53.6 53.9 0/24 53.5 53.8 54.5 0/24 53.1 54.0 55.1 0/24 49.3 49.9 50.6 0/24
Apr 27 51.9 52.3 52.7 0/24 52.4 52.7 53.0 0/24 53.0 53.1 53.3 0/24 53.1 53.3 53.4 0/24 53.8 53.9 54.1 0/24 53.6 53.9 54.1 0/24 53.6 53.9 54.3 0/24 53.7 54.0 54.4 0/24 53.8 54.1 54.4 0/24 53.8 54.4 55.3 0/24 50.1 50.8 52.0 0/24
Apr 28 52.0 52.3 52.6 0/24 52.4 52.7 53.0 0/24 53.1 53.5 54.4 0/24 53.3 53.7 54.1 0/24 54.0 54.1 54.4 0/24 53.8 54.0 54.2 0/24 54.1 54.3 54.7 0/24 54.2 54.4 54.8 0/24 54.3 54.6 55.0 0/24 54.1 54.8 55.9 0/24 50.5 50.9 51.3 0/24
Apr 29 52.7 53.0 53.5 0/24 53.0 53.3 53.5 0/24 54.0 54.1 54.4 0/24 54.0 54.2 54.4 0/24 54.4 54.6 54.8 0/24 54.2 54.5 54.6 0/24 54.3 54.5 54.8 0/24 54.4 54.7 54.9 0/24 54.5 54.8 55.0 0/24 54.6 55.1 55.6 0/24 50.2 50.6 50.9 0/24
Apr 30 52.3 52.6 53.0 0/24 52.5 52.9 53.1 0/24 54.0 54.1 54.2 0/24 54.2 54.3 54.3 0/24 54.7 54.8 55.0 0/24 54.7 54.7 54.9 0/24 54.5 54.7 54.9 0/24 54.6 54.8 55.0 0/24 54.7 55.0 55.4 0/24 54.8 55.2 55.7 0/24 50.3 50.7 51.1 0/24
>68.05 0 0 0 0/
720		 0 0 0 0/
720		 0 0 0 0/
720		 0 0 0 0/
720		 0 0 0 0/
720		 0 0 0 0/
720		 0 0 0 0/
720		 0 0 0 0/
720		 0 0 0 0/
720		 0 0 0 0/
720		 0 0 1 1/
698

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.