Eastern Oregon Fishing Report and Forecast Posted on May 27, 2021May 27, 2021 by Glenn Zinkus Wallowa Lake Kokanee Action. Williamson River Is Now Open. Weather Outlook Across Central and Eastern Oregon: After the latest cold front that is currently blowing through today, the weather begins to warm up across the... This post is only available to Members. If you are a Member, please be sure to log in and remember to select the Remember Me option. If you want to become a member or find out more, take a look here.