Pay attention to these weather alerts from the NWS. Turns out, the weather is forecastable. Yet, it is common for climbers to get caught off-guard by the weather. Don't forget that the weather turns what is an enjoyable period of good-times into a trajic, life and death condition. Same place, just different time.
Special Weather Statement issued May 09 at 3:00PM PDT until further notice by NWS
COOLER AND WETTER CONDITIONS IN THE MOUNTAINS THURSDAY THROUGH THE WEEKEND
Hikers, backpackers and campers should plan for cool and showery conditions if traveling into the Olympics and Cascades Thursday through the weekend. An upper level low will shift inland bringing cool and unstable conditions to Western Washington, a big change from the warm and dry weather early this week. Snow levels will hover near 8000 feet then drop to around 3000 to 4000 feet Thursday night into Friday as the cooler air mass moves inland.
With wet and unstable conditions, expect a mix of rain and low-elevation snow showers in the mountains along with a chance of thunderstorms in the Cascades. This cool and showery pattern may continue into early next week as another upper level low tracks over the Pacific Northwest. Continue to monitor the forecast for the latest details.