Francis Lake
Lake · Mammoth Lakes corridor
Francis Lake sits at 10,955 feet in the Mammoth Lakes corridor of California's Sierra Nevada. This high-elevation lake runs colder and windier than nearby valley alternatives, requiring careful timing.
Wind accelerates across the open water by mid-afternoon, with gusts common through late day. Morning conditions are markedly calmer. The 30-day average wind of 15 mph masks afternoon peaks that regularly exceed 30 mph. Cold temperature and exposure demand respect regardless of season.
Over the past month, Francis Lake has averaged a 15 NoGo Score with temperatures near 19 degrees Fahrenheit and winds averaging 15 mph; peak gusts reached 42 mph. The week ahead will show whether early-season wind patterns hold or shift. Check the chart to track when the next stable window opens for paddling or fishing.
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About Francis Lake
Francis Lake lies in the high Sierra above Mammoth Lakes, accessed via Highway 395 to the Mammoth Lakes corridor. The lake sits on the eastern slope, well above the town of Mammoth Lakes proper. Most visitors approach via the main resort roads branching east from Highway 395; the final approach involves rough or seasonal roads depending on snowpack. At 10,955 feet elevation, the lake remains snow-bound or marginal until late spring and refreezes by early fall. Winter access is unreliable and not recommended without backcountry ski or foot travel.
Conditions here are governed by elevation and exposure. The 30-day rolling average temperature sits near 19 degrees Fahrenheit, with annual lows around 2 degrees and highs around 33 degrees. The lake experiences sustained wind; the 30-day average of 15 mph understates the afternoon reality, when funneling off the surrounding peaks drives gusts to 42 mph or higher. Mornings offer the calmest window, typically before 10 a.m. Wind ramps sharply from 11 a.m. onward. Crowding remains light year-round, averaging 4 on the NoGo 0-100 scale, reflecting the remote access and high-altitude barrier to casual visitors.
Francis Lake suits anglers targeting high-Sierra trout and paddlers seeking solitude over seclusion. The cold, windy character screens out fair-weather kayakers and swimmers. Those who visit should plan for morning-only paddling, bring insulating layers regardless of forecast warmth, and expect afternoon confinement to shore once wind builds. Parking is minimal; arrive early on weekends. The lake remains inaccessible to most visitors until late spring snowmelt clears approach roads. Late September through early October offers the most stable conditions before fall storms resume.
Nearby Mammoth Lake and other reservoir lakes in the corridor sit lower and experience somewhat moderated wind, though they also see higher crowds. Crowley Lake, further south, sits more sheltered but draws more day-users. Francis Lake's remoteness and consistent afternoon wind are liabilities for casual recreation but assets for those seeking genuine isolation and are willing to plan around weather.