Jim Peterson Hill
Peak · 4,412 ft · North Sierra corridor
Jim Peterson Hill is a 4412-foot peak in California's North Sierra corridor, sitting exposed to afternoon wind funnels off adjacent basins. Typically windier than sheltered coves but calmer than open ridge traverses at similar elevation.
Wind picks up by mid-afternoon as thermal circulation develops off lower elevations to the east. Morning hours offer the steadiest conditions. Spring and early summer see the most variable weather; snowpack lingers into late spring on north slopes. Crowding stays light except during holiday weekends and after major passes open.
Over the last 30 days, Jim Peterson Hill averaged 11 mph wind and 48 degrees Fahrenheit, with a NoGo Score of 35 out of 50. The week ahead continues this pattern of moderate spring conditions; plan for calm mornings and rising wind by afternoon. Watch the trend chart for temperature swings typical of high-Sierra transitional seasons.
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About Jim Peterson Hill
Jim Peterson Hill stands at 4412 feet in the North Sierra corridor, roughly 60 miles north-northeast of Sacramento via Highway 89 and local forest roads. The peak sits between the Sierra crest and the lower basins that drain toward the Feather River drainage system. Access is primarily from the west via Highway 89 from the Sierra Valley floor; the approach is easiest in late spring through early autumn when snow clears from approach roads. Winter and early spring travel requires avalanche-safe route planning and familiarity with snowpack conditions in the SAC (Sacramento) Avalanche Center forecast zone.
Spring through early summer is Jim Peterson Hill's most variable season. The 30-day average wind of 11 mph masks afternoon gusts that frequently exceed 15 mph by mid-day. Temperatures average 48 degrees Fahrenheit but swing widely; overnight lows often drop to near freezing while afternoon peaks can reach the low 50s. Crowding averages 5 out of 10, rising sharply during Easter holidays and the opening week of Highway 120. Winter snowpack lingers on north and east-facing terrain into late May; avalanche terrain awareness is essential for any winter or spring ascent, particularly in gullies and convex slopes above 4000 feet.
Jim Peterson Hill suits peak baggers, ridge walkers, and snow climbers comfortable with variable afternoon wind and navigation on partially snow-covered terrain. Visitors should plan for a dawn start to secure calm morning conditions; afternoon wind often renders exposed ridges unpleasant by 2 PM. Parking near trailheads fills on weekends, especially after major pass openings. Water sources are snowmelt-dependent and unreliable until mid-June; carry sufficient capacity. The peak's prominence makes it a strong candidate for a one-day round trip from lower Sierra Valley towns.
Adjacent peaks in the North Sierra corridor lie 5 to 10 miles north and south along the crest; they share similar wind regimes and snowpack timing but often see less traffic due to less accessible trailheads. Highway 89 provides the main corridor access and remains open year-round at lower elevations but can close seasonally at higher passes. The SAC Avalanche Center issues forecasts for this zone; consult current bulletins before any winter or spring approach, especially if crossing terrain steeper than 30 degrees.