Klawatti Peak is an 8,485-foot mountain in Washington’s North Cascades National Park, rising above surrounding ice as a nunatak between nearby glaciers. Its setting reflects the North Cascades’ long geologic development through tectonic activity, terrane accretion, uplift, faulting, and repeated Pleistocene glaciation, which produced the region’s deep valleys and jagged relief. The peak also lies in a marine west coast climate shaped by Pacific weather systems, bringing heavy moisture, snowy and cloudy winters, and generally clearer summers under stronger high pressure. Because of those conditions, the most favorable climbing weather usually comes from July through September.