Lower Columbia River Temperature Report for April 2025  
Generated 2025-05-01 13:18:09

  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 45.6 45.9 46.1 0/24 45.6 45.8 46.0 0/24 46.9 47.2 47.4 0/24 47.3 47.6 47.9 0/24 47.3 47.5 47.7 0/24 47.2 47.4 47.5 0/24 47.3 47.4 47.6 0/24 47.4 47.6 47.8 0/24 47.4 47.6 47.8 0/24 --- --- --- 0/0 44.6 44.9 45.4 0/24
04 02 45.7 46.1 46.5 0/24 45.6 45.9 46.2 0/24 47.3 47.4 47.5 0/24 47.7 47.8 47.8 0/24 47.6 47.8 48.0 0/24 47.5 47.7 47.9 0/24 47.4 47.5 47.6 0/24 47.6 47.7 47.8 0/24 47.6 47.7 48.2 0/24 --- --- --- 0/0 44.6 45.1 45.6 0/24
04 03 45.9 46.1 46.6 0/24 45.6 45.9 46.3 0/24 47.4 47.5 47.7 0/24 47.8 47.9 47.9 0/24 47.9 48.0 48.2 0/24 47.8 48.0 48.2 0/24 47.4 47.7 48.1 0/24 47.6 47.8 48.2 0/24 47.5 47.9 48.5 0/24 --- --- --- 0/0 44.9 45.4 46.2 0/24
04 04 46.4 47.1 48.2 0/24 46.1 46.5 47.1 0/24 47.6 47.9 48.6 0/24 47.9 48.1 48.3 0/24 48.1 48.3 48.4 0/24 47.9 48.2 48.5 0/24 47.9 48.1 48.6 0/24 48.0 48.3 48.7 0/24 47.9 48.3 48.7 0/24 --- --- --- 0/0 44.9 45.5 46.1 0/24
04 05 47.0 47.6 48.6 0/24 46.7 47.1 47.7 0/24 48.0 48.3 48.7 0/24 48.1 48.2 48.4 0/24 48.4 48.5 48.6 0/24 48.3 48.5 48.6 0/24 48.3 48.5 48.7 0/24 48.5 48.6 48.9 0/24 48.4 48.6 49.0 0/24 --- --- --- 0/0 45.0 45.5 46.2 0/24
04 06 47.7 47.9 48.2 0/24 47.4 47.6 47.7 0/24 47.8 48.1 48.3 0/24 48.1 48.1 48.2 0/24 48.3 48.5 48.6 0/24 48.3 48.5 48.6 0/24 48.7 48.7 48.8 0/24 48.8 48.9 49.0 0/24 48.8 48.9 49.0 0/24 --- --- --- 0/0 45.2 45.9 46.7 0/24
04 07 47.7 47.9 48.2 0/24 47.4 47.6 47.7 0/24 47.8 47.9 48.0 0/24 48.1 48.2 48.3 0/24 48.3 48.4 48.5 0/24 48.3 48.5 48.6 0/24 48.6 48.7 48.8 0/24 48.8 48.9 49.0 0/24 48.8 48.9 49.2 0/24 --- --- --- 0/0 45.9 46.5 47.4 0/24
04 08 47.9 48.1 48.3 0/24 47.6 47.7 47.9 0/24 47.8 48.0 48.5 0/24 48.1 48.3 48.6 0/24 48.5 48.6 48.7 0/24 48.4 48.5 48.8 0/24 48.5 48.7 48.8 0/24 48.7 48.8 48.9 0/24 48.7 48.8 48.9 0/24 --- --- --- 0/0 46.2 46.5 46.8 0/24
04 09 48.1 48.3 48.5 0/24 47.6 48.0 48.6 0/24 48.0 48.2 48.6 0/24 48.3 48.5 48.8 0/24 48.5 48.7 49.0 0/24 48.3 48.7 49.1 0/24 48.5 48.6 48.9 0/24 48.6 48.8 49.0 0/24 48.5 48.8 49.0 0/24 --- --- --- 0/0 46.0 46.5 47.2 0/24
04 10 48.7 49.1 49.8 0/24 48.5 48.8 49.1 0/24 48.4 48.7 49.2 0/24 48.8 49.0 49.5 0/24 48.9 49.1 49.3 0/24 48.9 49.2 49.4 0/24 48.8 48.9 49.1 0/24 48.9 49.1 49.3 0/24 49.0 49.1 49.4 0/24 --- --- --- 0/0 46.2 46.7 47.3 0/24
04 11 48.7 48.9 49.2 0/24 48.4 48.6 48.9 0/24 48.6 48.9 49.3 0/24 48.9 49.2 49.5 0/24 49.3 49.4 49.5 0/24 49.4 49.6 49.7 0/24 49.1 49.4 49.9 0/24 49.2 49.5 50.0 0/24 49.2 49.5 49.9 0/24 --- --- --- 0/0 46.0 46.5 47.2 0/24
04 12 48.5 48.7 49.0 0/24 48.2 48.4 48.6 0/24 49.3 49.5 49.7 0/24 49.5 49.7 49.9 0/24 49.2 49.5 49.7 0/24 49.5 49.6 49.8 0/24 49.5 49.7 50.0 0/24 49.5 49.8 50.1 0/24 49.5 49.8 50.2 0/24 --- --- --- 0/0 46.1 46.4 46.9 0/24
04 13 48.1 48.5 49.2 0/24 48.0 48.2 48.4 0/24 49.7 49.9 50.4 0/24 49.9 50.1 50.4 0/24 49.7 49.9 50.2 0/24 49.8 50.0 50.3 0/24 49.6 49.8 50.1 0/24 49.6 49.9 50.2 0/24 49.5 49.9 50.3 0/24 --- --- --- 0/0 45.7 46.2 47.0 0/24
04 14 48.3 48.7 49.0 0/24 48.2 48.5 48.8 0/24 50.2 50.5 51.2 0/24 50.2 50.5 51.0 0/24 50.0 50.3 50.6 0/24 50.3 50.5 50.7 0/24 49.8 50.2 50.5 0/24 49.9 50.2 50.6 0/24 49.8 50.2 50.8 0/24 --- --- --- 0/0 45.7 46.1 46.6 0/24
04 15 48.0 48.3 48.8 0/24 48.3 48.5 48.8 0/24 50.5 50.6 50.7 0/24 50.5 50.7 50.8 0/24 50.4 50.6 51.0 0/24 50.6 50.9 51.1 0/24 50.5 50.8 51.2 0/24 50.5 50.9 51.2 0/24 50.5 50.9 51.5 0/24 --- --- --- 0/0 45.6 46.2 46.7 0/24
04 16 48.0 48.4 49.2 0/24 48.3 48.6 48.8 0/24 50.4 50.7 51.2 0/24 50.6 50.8 51.3 0/24 50.8 51.0 51.3 0/24 51.1 51.2 51.3 0/24 51.0 51.3 51.6 0/24 51.1 51.4 51.7 0/24 51.0 51.5 52.0 0/24 --- --- --- 0/0 46.2 46.5 47.0 0/24
04 17 48.2 48.5 50.0 0/24 48.3 48.7 49.3 0/24 50.6 50.7 51.1 0/24 50.7 50.8 51.0 0/24 50.8 51.1 51.3 0/24 51.0 51.2 51.4 0/24 51.4 51.6 51.9 0/24 51.4 51.7 52.0 0/24 51.3 51.7 52.2 0/24 --- --- --- 0/0 46.1 46.7 47.3 0/24
04 18 49.0 49.3 49.6 0/24 49.2 49.5 49.9 0/24 50.4 50.5 50.8 0/24 50.5 50.7 50.8 0/24 50.8 51.0 51.2 0/24 51.1 51.2 51.4 0/24 51.5 51.7 52.0 0/24 51.6 51.8 52.1 0/24 51.5 51.9 52.4 0/24 --- --- --- 0/0 46.4 46.9 47.6 0/24
04 19 49.1 49.6 50.3 0/24 49.4 49.7 49.9 0/24 50.4 50.6 50.7 0/24 50.5 50.7 50.8 0/24 50.9 51.1 51.2 0/24 51.1 51.3 51.4 0/24 51.5 51.8 52.1 0/24 51.6 51.9 52.2 0/24 51.7 52.0 52.3 0/24 --- --- --- 0/0 46.8 47.2 47.8 0/24
04 20 49.2 49.5 49.7 0/24 49.4 49.7 50.0 0/24 50.3 50.4 50.5 0/24 50.5 50.6 50.6 0/24 50.6 50.9 51.2 0/24 50.9 51.0 51.2 0/24 51.4 51.5 51.7 0/24 51.4 51.6 51.8 0/24 51.4 51.7 52.0 0/24 --- --- --- 0/0 47.3 47.7 48.5 0/24
04 21 49.5 49.7 50.1 0/24 49.6 49.9 50.1 0/24 50.2 50.3 50.5 0/24 50.4 50.5 50.6 0/24 50.6 50.8 50.9 0/24 50.8 50.9 51.0 0/24 51.1 51.3 51.6 0/24 51.1 51.4 51.7 0/24 51.1 51.5 51.8 0/24 --- --- --- 0/0 47.4 47.9 48.6 0/24
04 22 50.2 50.4 50.6 0/24 50.1 50.6 51.1 0/24 50.3 50.4 50.8 0/24 50.5 50.7 51.1 0/24 50.5 50.7 50.8 0/24 50.8 51.0 51.2 0/24 51.0 51.3 51.7 0/24 51.0 51.4 51.7 0/24 51.0 51.5 52.1 0/24 --- --- --- 0/0 47.6 48.1 48.8 0/24
04 23 50.4 50.7 51.1 0/24 50.6 50.9 51.5 0/24 50.7 50.9 51.3 0/24 50.9 51.1 51.5 0/24 50.8 51.0 51.2 0/24 51.0 51.2 51.5 0/24 51.2 51.5 51.9 0/24 51.2 51.5 52.0 0/24 51.3 51.6 52.0 0/24 --- --- --- 0/0 47.7 48.2 48.8 0/24
04 24 50.6 51.1 52.2 0/24 50.7 51.1 51.5 0/24 51.3 51.5 51.8 0/24 51.3 51.5 52.0 0/24 51.2 51.4 51.6 0/24 51.3 51.6 51.9 0/24 51.3 51.6 52.1 0/24 51.3 51.7 52.2 0/24 51.4 51.8 52.1 0/24 --- --- --- 0/0 48.1 48.5 49.1 0/24
04 25 50.5 50.9 51.5 0/24 50.8 51.0 51.3 0/24 51.5 51.7 52.1 0/24 51.5 51.7 52.1 0/24 51.7 51.9 52.2 0/24 51.7 52.1 52.3 0/24 51.7 52.1 52.6 0/24 51.8 52.1 52.7 0/24 51.8 52.2 52.7 0/24 --- --- --- 0/0 48.5 49.0 49.7 0/24
04 26 50.7 50.9 51.3 0/24 50.8 51.2 51.7 0/24 51.5 51.7 51.9 0/24 51.7 51.8 52.0 0/24 52.2 52.4 52.6 0/24 52.2 52.5 52.8 0/24 52.2 52.5 52.8 0/24 52.4 52.6 53.0 0/24 52.4 52.7 52.9 0/24 --- --- --- 0/0 49.1 49.5 50.0 0/24
04 27 50.7 51.0 51.3 0/24 51.1 51.3 51.5 0/24 51.7 52.0 52.3 0/24 52.0 52.2 52.5 0/24 52.3 52.4 52.6 0/24 52.3 52.5 52.7 0/24 52.4 52.5 52.8 0/24 52.5 52.6 52.9 0/24 52.5 52.7 52.9 0/24 --- --- --- 0/0 49.5 50.1 51.0 0/24
04 28 50.9 51.4 51.6 0/24 51.1 51.5 51.9 0/24 52.2 52.5 52.7 0/24 52.5 52.7 52.9 0/24 52.4 52.7 52.9 0/24 52.3 52.7 52.9 0/24 52.3 52.6 53.0 0/24 52.4 52.7 53.1 0/24 52.5 52.7 53.1 0/24 --- --- --- 0/0 49.8 50.5 51.4 0/24
04 29 51.5 51.9 52.2 0/24 51.7 52.1 52.4 0/24 52.7 52.8 53.1 0/24 53.0 53.1 53.2 0/24 52.9 53.2 53.5 0/24 52.8 53.2 53.5 0/24 52.4 52.8 53.2 0/24 52.6 52.9 53.3 0/24 52.8 53.0 53.3 0/24 --- --- --- 0/0 50.3 50.9 51.8 0/24
04 30 52.2 52.4 52.7 0/24 52.2 52.7 53.2 0/24 52.8 52.9 53.3 0/24 53.2 53.4 53.7 0/24 53.4 53.6 53.9 0/24 53.4 53.6 53.8 0/24 52.9 53.2 53.7 0/24 53.0 53.3 53.9 0/24 53.0 53.4 53.9 0/24 --- --- --- 0/0 50.5 51.2 51.9 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/
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.