Middle Fork Salmon River Flows

Middle Fork Salmon River Conditions, Snow and Water Levels, Weather Predictions, and Averages

Weather on the main Salmon River in the Frank Church Wilderness Area is typically warm and sunny. The average daytime temperatures range from 70 degrees to the lower 90s, and the temperatures at night range from 45 to 70 degrees with the average rainfall per year approximately 10 inches. Temperatures and water levels can vary depending on the time of the year you plan to embark on your Idaho fly fishing trip or Salmon River whitewater rafting adventure.

Depending on snowpack and runoff, June is normally whitewater rafting time only. July brings warmer water and air temperatures and the beginning of prime dry-fly fishing, which continues through August and September. The following charts and online resources show temperature, water levels, and precipitation information for the months of March through October so that you can better plan your Solitude River Trip.

Northwest River Forecast Center
River Information & Forecasts

Middle Fork Salmon River

State: Idaho
County: LEMHI
Latitude: 45 17′ 38″ North
Longitude: 114 35′ 42″ West

NOAA Northwest River Forecast Center

Natural Resources Conservation Service – Idaho

A Surface Water Supply Index (SWSI) is a predictive indicator of the surface water available in a basin compared to historical supply.

Surface Water Supply Index (SWSI)

USGS Current Water Data for Idaho 

Natural Resources Conservation Service – Idaho

Current Water Year Snow and Precipitation Reports

Idaho Snow Survey Program

The NRCS Snow Survey Program provides mountain snowpack data and streamflow forecasts for the western United States.