| Gauge Name |
Gauge ID |
Date of First Daily Average Temperature over 68°F |
Date of Last Daily Average Temperature over 68°F |
Days with Daily Average Temperature over 68°F |
Maximum Daily Temperature During Year |
Date of Maximum Daily Temperature |
|---|---|---|---|---|---|---|
| Libby Dam and Lake Koocanusa near Libby | LBQM | n/a | n/a | 0 | 59.9°F | Aug 11 |
| Albeni Falls forebay | ALFI | Jul 17 | Sep 04 | 50 | 74.8°F | Aug 10 |
| Albeni Falls tailwater | ALQI | Jul 28 | Sep 04 | 39 | 74.6°F | Aug 10 |
| Chief Joseph Dam forebay | CHJ | n/a | n/a | 0 | 67.0°F | Aug 29 |
| Chief Joseph tailwater | CHQW | n/a | n/a | 0 | 66.7°F | Aug 29 |
| Anatone - Snake River Near Anatone | ANQW | n/a | n/a | 0 | n/a | n/a |
| Dworshak - N. Fork Clearwater R at Ahsahka | DWQI | n/a | n/a | 0 | n/a | n/a |
| Peck - Clearwater River at Peck | PEKI | n/a | n/a | 0 | 62.0°F | Jun 25 |
| Lewiston - Clearwater River near Lewiston | LEWI | n/a | n/a | 0 | n/a | n/a |
| Lower Granite Dam forebay | LWG | n/a | n/a | 0 | n/a | n/a |
| Lower Granite tailwater - Snake R. below dam | LGNW | n/a | n/a | 0 | n/a | n/a |
| Little Goose Dam forebay | LGSA | n/a | n/a | 0 | n/a | n/a |
| Little Goose Dam tailwater (Snake R. below Little Goose) | LGSW | n/a | n/a | 0 | n/a | n/a |
| Lower Monumental Dam forebay on Snake River | LMNA | n/a | n/a | 0 | n/a | n/a |
| Lower Monumental tailwater below the dam on Snake River | LMNW | n/a | n/a | 0 | n/a | n/a |
| Ice Harbor Dam forebay | IHRA | n/a | n/a | 0 | n/a | n/a |
| Ice Harbor tailwater- Snake R. below Goose Is. | IDSW | n/a | n/a | 0 | n/a | n/a |
| McNary Dam forebay on Columbia R. | MCNA | n/a | n/a | 0 | n/a | n/a |
| McNary Dam tailwater on Columbia R. | MCPW | n/a | n/a | 0 | n/a | n/a |
| John Day Dam forebay | JDY | n/a | n/a | 0 | n/a | n/a |
| John Day Dam tailwater | JHAW | n/a | n/a | 0 | n/a | n/a |
| The Dalles Dam forebay on Columbia R. | TDA | n/a | n/a | 0 | n/a | n/a |
| The Dalles tailwater Downstream | TDDO | n/a | n/a | 0 | n/a | n/a |
| Bonneville Dam forebay | BON | Jul 16 | Sep 09 | 56 | 71.9°F | Aug 06 |
| Cascade Island | CCIW | Jul 15 | Sep 09 | 56 | 72.0°F | Aug 06 |
| Warrendale | WRNO | n/a | n/a | 0 | n/a | n/a |
| Camas / Washougal | CWMW | n/a | n/a | 0 | n/a | n/a |
| Systemwide Total | Jul 15 | Sep 09 | 201 | 74.8°F | Aug 10 | |