I was in Washington just a week ago, part of my eclipse-related journey, but in four days, I saw not one little bit of the mountain. It was mostly overcast, or I was in one of those spots where the peak simply wasn't visible. The peak had disappeared and it was kind of frustrating!
The reason I mentioned "disappearing" in two senses has to do with the effect of the ice on the mountain. The volcano is being dismantled. Glaciers are a major force of erosion, especially when the underlying rock has been weakened by chemical weathering related to the hot acidic fluids that circulate and attack the mountain from below (hot springs exist around the summit where the steam has excavated miles of ice caves). The glaciers have scraped away the rock around the original summit, which has also collapsed in several large debris avalanches. In other words, the mountain once stood as high as 16,000 feet, which would have made it the highest mountain in the lower 48 states by far.
My favorite pictures of Mt. Rainier both involved flights. I was returning from a geology trip in Italy a number of years ago, and our flight path took us right over Rainier, giving me the awesome perspective seen in the picture above.
On a different flight from Seattle, we took off just after sunset and I didn't expect to see anything, but the faint twilight allowed the mountain to glow blue, and I got the rather ethereal other-worldly view seen below. The color is the way the camera recorded it (I didn't play with the contrast or color).