Lower Snake River Temperature Report for September 2026  
Generated 2026-09-02 23:27:09

  Anatone - Snake River Near Anatone (ANQW) Lower Granite Dam forebay (LWG) Lower Granite tailwater - Snake R. below dam (LGNW) Little Goose Dam forebay (LGSA) Little Goose Dam tailwater (Snake R. below Little Goose) (LGSW) Lower Monumental Dam forebay on Snake River (LMNA) Lower Monumental tailwater below the dam on Snake River (LMNW) Ice Harbor Dam forebay (IHRA) Ice Harbor tailwater- Snake R. below Goose Is. (IDSW)
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
09 01 70.5 70.8 71.2 24/24 66.5 67.8 68.6 9/24 63.8 64.9 65.6 0/24 67.5 67.8 68.2 2/24 67.0 67.3 67.7 0/24 66.9 67.5 67.9 0/24 67.0 67.3 67.7 0/23 68.4 68.7 69.2 24/24 68.3 68.8 69.0 24/24
09 02 70.1 70.6 71.3 23/23 65.0 66.2 68.0 0/23 63.7 64.6 65.5 0/23 65.9 66.6 67.5 0/23 66.0 66.4 66.9 0/23 66.0 66.4 67.0 0/23 66.2 66.6 67.0 0/23 67.8 68.1 68.4 11/23 67.6 67.8 68.2 4/23
09 03 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 04 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 05 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 06 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 07 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 08 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 09 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 10 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 11 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 12 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 13 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 14 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 15 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 16 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 17 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 18 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 19 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 20 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 21 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 22 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 23 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 24 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 25 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 26 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 27 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 28 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 29 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
09 30 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0 --- --- --- 0/0
>68.05 2 2 2 47/
47		 0 0 1 9/
47		 0 0 0 0/
47		 0 0 1 2/
47		 0 0 0 0/
47		 0 0 0 0/
47		 0 0 0 0/
46		 1 2 2 35/
47		 1 1 2 28/
47

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.