Alum Rock

What is the climate like in Alum Rock?

The best time to visit Alum Rock is typically May – October, with trip comfort peaking in July (9.5/10). Alum Rock is warmest in August, when daily highs average 84°F (29°C), and coolest in December, when lows fall to about 42°F (5°C). The wettest month is typically January and the driest is July; the year sees roughly 24 in of precipitation.

• Best time to visitMay – October — comfort peaks in July (9.5/10)
• Warmest monthAugust — average high 84°F (29°C)
• Coolest monthDecember — average low 42°F (5°C)
• Wettest monthJanuary (5.3 in)
• Driest monthJuly (0.0 in)
• Annual precipitation24 in