Lower Columbia River Temperature Report for March 2026  
Generated 2026-03-31 21:27:10

  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
03 01 --- --- --- 0/0 41.0 41.2 41.4 0/24 --- --- --- 0/0 41.0 41.1 41.2 0/24 --- --- --- 0/0 41.5 41.6 41.7 0/24 --- --- --- 0/0 --- --- --- 0/0 42.0 42.1 42.2 0/24 --- --- --- 0/0 --- --- --- 0/0
03 02 --- --- --- 0/0 41.3 41.5 41.8 0/24 --- --- --- 0/0 41.1 41.2 41.4 0/24 --- --- --- 0/0 41.5 41.7 41.9 0/24 --- --- --- 0/0 --- --- --- 0/0 42.1 42.2 42.5 0/24 --- --- --- 0/0 --- --- --- 0/0
03 03 --- --- --- 0/0 41.6 41.8 42.0 0/24 --- --- --- 0/0 41.3 41.4 41.5 0/24 --- --- --- 0/0 41.8 42.0 42.2 0/24 --- --- --- 0/0 --- --- --- 0/0 42.2 42.3 42.4 0/24 --- --- --- 0/0 --- --- --- 0/0
03 04 --- --- --- 0/0 41.8 42.1 42.3 0/24 --- --- --- 0/0 41.5 41.6 41.7 0/24 --- --- --- 0/0 42.1 42.3 42.5 0/24 --- --- --- 0/0 --- --- --- 0/0 42.3 42.5 42.7 0/24 --- --- --- 0/0 --- --- --- 0/0
03 05 --- --- --- 0/0 42.0 42.3 42.6 0/24 --- --- --- 0/0 41.7 41.9 42.0 0/24 --- --- --- 0/0 42.3 42.5 42.8 0/24 --- --- --- 0/0 --- --- --- 0/0 42.7 42.8 43.2 0/24 --- --- --- 0/0 --- --- --- 0/0
03 06 --- --- --- 0/0 42.4 42.7 42.9 0/24 --- --- --- 0/0 41.9 42.1 42.2 0/24 --- --- --- 0/0 42.5 42.7 42.9 0/24 --- --- --- 0/0 --- --- --- 0/0 43.0 43.1 43.4 0/24 --- --- --- 0/0 --- --- --- 0/0
03 07 --- --- --- 0/0 42.9 43.2 43.4 0/24 --- --- --- 0/0 42.2 42.5 42.7 0/24 --- --- --- 0/0 42.7 43.2 43.6 0/24 --- --- --- 0/0 --- --- --- 0/0 43.2 43.5 44.2 0/24 --- --- --- 0/0 --- --- --- 0/0
03 08 --- --- --- 0/0 43.4 43.7 44.1 0/23 --- --- --- 0/0 42.7 42.9 43.2 0/23 --- --- --- 0/0 43.4 43.8 44.1 0/23 --- --- --- 0/0 --- --- --- 0/0 43.8 44.1 44.4 0/23 --- --- --- 0/0 --- --- --- 0/0
03 09 --- --- --- 0/0 44.1 44.2 44.4 0/24 --- --- --- 0/0 43.1 43.3 43.4 0/24 --- --- --- 0/0 43.6 43.8 43.9 0/24 --- --- --- 0/0 --- --- --- 0/0 44.1 44.1 44.4 0/24 --- --- --- 0/0 --- --- --- 0/0
03 10 44.1 44.3 44.4 0/13 44.1 44.3 44.5 0/24 --- --- --- 0/0 43.4 43.6 43.7 0/24 --- --- --- 0/0 43.5 43.7 43.9 0/24 --- --- --- 0/0 --- --- --- 0/0 44.0 44.1 44.2 0/24 --- --- --- 0/0 --- --- --- 0/0
03 11 43.9 44.1 44.3 0/24 44.0 44.1 44.3 0/24 --- --- --- 0/0 43.7 43.9 44.1 0/24 --- --- --- 0/0 43.8 44.1 44.3 0/24 --- --- --- 0/0 --- --- --- 0/0 44.0 44.0 44.2 0/24 --- --- --- 0/0 --- --- --- 0/0
03 12 43.6 43.8 44.0 0/24 43.6 43.8 44.0 0/24 --- --- --- 0/0 44.1 44.4 44.5 0/24 --- --- --- 0/0 44.2 44.6 44.9 0/24 --- --- --- 0/0 --- --- --- 0/0 44.1 44.2 44.3 0/24 --- --- --- 0/0 43.0 43.1 43.3 0/14
03 13 43.7 43.8 44.0 0/24 43.6 43.8 43.8 0/24 --- --- --- 0/0 44.5 44.6 44.7 0/24 --- --- --- 0/0 44.8 45.1 45.4 0/24 --- --- --- 0/0 --- --- --- 0/0 44.2 44.7 45.2 0/24 --- --- --- 0/0 42.9 43.1 43.2 0/24
03 14 43.5 43.6 43.8 0/24 43.6 43.7 43.8 0/24 --- --- --- 0/0 44.7 44.8 44.9 0/24 --- --- --- 0/0 45.2 45.4 45.5 0/24 --- --- --- 0/0 --- --- --- 0/0 45.2 45.4 45.5 0/24 --- --- --- 0/0 42.7 42.9 43.4 0/24
03 15 43.4 43.5 43.6 0/24 43.4 43.5 43.6 0/24 --- --- --- 0/0 44.9 45.0 45.2 0/24 --- --- --- 0/0 45.1 45.2 45.3 0/24 --- --- --- 0/0 --- --- --- 0/0 45.2 45.3 45.4 0/24 --- --- --- 0/0 42.5 42.8 43.0 0/24
03 16 43.3 43.5 43.7 0/24 43.5 43.6 43.7 0/24 45.0 45.0 45.1 0/12 45.1 45.2 45.4 0/24 45.4 45.6 45.7 0/14 45.3 45.5 45.6 0/24 --- --- --- 0/0 --- --- --- 0/0 45.3 45.6 45.9 0/24 --- --- --- 0/0 42.5 42.6 42.7 0/24
03 17 43.5 43.7 43.9 0/24 43.6 43.7 43.8 0/24 44.7 44.9 45.0 0/24 45.0 45.1 45.2 0/24 45.6 45.7 45.9 0/24 45.5 45.6 45.8 0/24 45.9 226.5 2391.3 1/13 45.8 46.1 46.2 0/14 0.0 44.0 46.3 0/24 --- --- --- 0/0 42.6 43.2 43.6 0/24
03 18 43.5 43.7 44.3 0/24 43.5 43.7 43.8 0/24 44.6 44.6 44.7 0/24 44.9 45.0 45.1 0/24 45.5 45.6 45.7 0/24 45.5 45.6 45.7 0/24 46.1 46.3 46.6 0/24 46.1 46.3 46.6 0/24 46.1 46.3 46.9 0/24 --- --- --- 0/0 43.1 43.3 43.7 0/24
03 19 43.6 43.9 44.4 0/24 43.7 43.9 44.2 0/24 44.6 44.7 44.8 0/24 44.9 45.0 45.1 0/24 45.6 45.6 45.7 0/24 45.4 45.5 45.8 0/24 46.3 46.4 46.6 0/24 46.4 46.5 46.6 0/24 46.4 46.6 46.8 0/24 --- --- --- 0/0 43.1 43.5 44.0 0/24
03 20 44.1 44.3 44.6 0/24 44.2 44.4 44.6 0/24 44.6 44.7 45.0 0/24 44.9 45.1 45.2 0/24 45.7 45.9 46.1 0/24 45.5 45.8 46.0 0/24 46.3 46.4 46.5 0/24 46.4 46.5 46.6 0/24 46.4 46.5 46.6 0/24 --- --- --- 0/0 44.0 44.5 45.0 0/24
03 21 44.3 44.6 45.4 0/24 44.5 44.8 45.2 0/24 44.8 45.0 45.2 0/24 45.2 45.4 45.6 0/24 46.1 46.2 46.3 0/24 45.9 46.0 46.1 0/24 46.2 46.5 46.7 0/24 46.3 46.5 46.8 0/24 46.3 46.5 46.7 0/24 --- --- --- 0/0 44.5 45.0 45.5 0/24
03 22 45.3 45.6 46.1 0/24 45.2 45.6 45.9 0/24 45.1 45.4 45.8 0/24 45.6 45.7 46.0 0/24 45.8 46.0 46.2 0/24 45.6 45.8 45.9 0/24 46.3 46.4 46.6 0/24 46.3 46.5 46.6 0/24 46.3 46.5 46.7 0/24 --- --- --- 0/0 44.6 44.9 45.2 0/24
03 23 45.6 45.9 46.3 0/24 45.8 45.9 46.2 0/24 45.6 45.6 45.8 0/24 45.9 45.9 46.0 0/24 46.0 46.1 46.2 0/24 45.9 46.0 46.0 0/24 46.0 46.2 46.2 0/24 46.1 46.2 46.3 0/24 46.1 46.2 46.4 0/24 --- --- --- 0/0 44.5 44.7 44.9 0/24
03 24 45.5 45.8 46.1 0/24 45.7 45.9 46.2 0/24 45.5 45.6 45.8 0/24 45.9 46.0 46.1 0/24 46.1 46.2 46.3 0/24 46.1 46.1 46.2 0/24 46.0 46.2 46.3 0/24 46.0 46.2 46.3 0/24 46.0 46.2 46.3 0/24 --- --- --- 0/0 44.7 44.7 44.8 0/24
03 25 45.1 45.6 46.0 0/24 45.5 45.7 45.8 0/24 45.7 45.8 45.9 0/24 46.1 46.2 46.3 0/24 46.3 46.5 46.8 0/24 46.2 46.4 46.6 0/24 46.3 46.5 46.7 0/24 46.3 46.5 46.8 0/24 46.3 46.5 46.7 0/24 --- --- --- 0/0 44.5 45.1 45.9 0/24
03 26 45.2 45.6 46.2 0/24 45.3 45.6 46.0 0/24 45.7 46.0 46.8 0/24 46.1 46.4 46.9 0/24 46.3 46.6 46.8 0/24 46.3 46.4 46.5 0/24 46.4 46.6 46.9 0/24 46.4 46.6 46.9 0/24 46.3 46.6 46.9 0/24 --- --- --- 0/0 45.1 45.5 45.8 0/24
03 27 45.5 45.9 46.5 0/24 45.6 45.9 46.2 0/24 46.6 46.8 47.5 0/24 46.9 47.1 47.4 0/24 46.7 46.9 47.2 0/24 46.5 46.7 47.0 0/24 46.6 46.7 46.9 0/24 46.6 46.7 46.9 0/24 46.5 46.8 47.1 0/24 --- --- --- 0/0 44.7 45.1 45.4 0/24
03 28 45.6 46.0 46.4 0/24 45.7 46.0 46.2 0/24 46.8 46.9 47.1 0/24 47.1 47.2 47.4 0/24 47.2 47.4 47.6 0/24 47.1 47.3 47.4 0/24 46.7 47.0 47.4 0/24 46.7 47.0 47.4 0/24 46.6 47.0 47.5 0/24 --- --- --- 0/0 45.1 45.4 45.7 0/24
03 29 45.6 45.9 46.1 0/24 45.7 45.9 46.0 0/24 46.6 46.7 46.8 0/24 46.9 47.0 47.1 0/24 47.3 47.4 47.7 0/24 47.2 47.3 47.5 0/24 47.3 47.5 47.6 0/24 47.3 47.5 47.7 0/24 47.2 47.5 47.7 0/24 --- --- --- 0/0 44.6 45.0 45.4 0/24
03 30 45.7 46.0 46.4 0/24 45.9 46.0 46.1 0/24 46.5 46.7 47.3 0/24 46.8 47.0 47.3 0/24 47.0 47.2 47.3 0/24 47.0 47.1 47.1 0/24 47.4 47.6 47.8 0/24 47.4 47.6 47.8 0/24 47.3 47.6 47.9 0/24 --- --- --- 0/0 44.5 44.8 45.2 0/24
03 31 45.8 46.0 46.2 0/21 45.9 46.0 46.1 0/21 46.7 46.9 47.2 0/21 47.0 47.0 47.2 0/21 47.1 47.2 47.3 0/21 47.0 47.1 47.2 0/21 47.2 47.3 47.5 0/21 47.2 47.3 47.6 0/21 47.2 47.3 47.6 0/21 --- --- --- 0/0 44.4 44.6 44.8 0/21
>68.05 0 0 0 0/
514		 0 0 0 0/
740		 0 0 0 0/
369		 0 0 0 0/
740		 0 0 0 0/
371		 0 0 0 0/
740		 0 1 1 1/
346		 0 0 0 0/
347		 0 0 0 0/
740		 0 0 0 0/
0		 0 0 0 0/
467

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.