page_title: Grindstone Mountain (Washington)
section_title: Climate
hierarchical_section_title: Grindstone Mountain (Washington) / Climate
caption_attribution_description: English: Florence Lake and Grindstone Mountain
context_page_description: Grindstone Mountain is a 7,533-foot mountain summit located in the Icicle Creek Valley in Chelan County of Washington state. Grindstone Mountain is situated 12 mi west of Leavenworth, within the Alpine Lakes Wilderness, on land managed by Okanogan-Wenatchee National Forest. Grindstone Mountain is the seventh-highest peak in the Chiwaukum Mountains, a subset of the Cascade Range. Its nearest higher neighbor is Ladies Peak, 2.2 mi to the north-northwest, and Cape Horn is set 1.4 mi to the north. Precipitation runoff from Grindstone drains into Icicle Creek, which is a tributary of the Wenatchee River. Although modest in elevation, relief is significant since Grindstone rises 4,700 feet above Icicle Creek Valley in less than two miles. Grindstone Mountain was named by Albert Hale Sylvester in association with Grindstone Creek, which flows from Sylvester Lake on this mountain's southwest slope. Sylvester found a small grindstone which had fallen from a pack horse fording the creek.
context_section_description: Most weather fronts originate in the Pacific Ocean, and travel east toward the Cascade Mountains. As fronts approach, they are forced upward by the peaks of the Cascade Range, causing them to drop their moisture in the form of rain or snowfall onto the Cascades (Orographic lift). As a result, the Cascades experience high precipitation, especially during the winter months in the form of snowfall. During winter months, weather is usually cloudy, but, due to high pressure systems over the Pacific Ocean that intensify during summer months, there is often little or no cloud cover during the summer. The months June through October offer the most favorable weather for viewing or climbing this peak.
caption: Florence Lake and Grindstone Mountain
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