Alta Sierra

What is the climate like in Alta Sierra?

The best time to visit Alta Sierra is typically May – October, with trip comfort peaking in June (9.2/10). Alta Sierra is warmest in July, when daily highs average 87°F (31°C), and coolest in January, when lows fall to about 30°F (-1°C). The wettest month is typically March and the driest is July; the year sees roughly 21 in (535 mm) of precipitation.

• Best time to visitMay – October — comfort peaks in June (9.2/10)
• Warmest monthJuly — average high 87°F (31°C)
• Coolest monthJanuary — average low 30°F (-1°C)
• Wettest monthMarch (4.3 in (109 mm))
• Driest monthJuly (0.2 in (4 mm))
• Annual precipitation21 in (535 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromGlennville, 13 km away (1951-2026)