Shasta Lake

What is the climate like in Shasta Lake?

The best time to visit Shasta Lake is typically May – September, with trip comfort peaking in August (9.1/10). Shasta Lake is warmest in July, when daily highs average 99°F (37°C), and coolest in December, when lows fall to about 39°F (4°C). The wettest month is typically January and the driest is July; the year sees roughly 59 in (1510 mm) of precipitation.

• Best time to visitMay – September — comfort peaks in August (9.1/10)
• Warmest monthJuly — average high 99°F (37°C)
• Coolest monthDecember — average low 39°F (4°C)
• Wettest monthJanuary (12 in (305 mm))
• Driest monthJuly (0.0 in (0 mm))
• Annual precipitation59 in (1510 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromShasta Dam, 5 km away (1943-2026)