Alamo

What is the climate like in Alamo?

The best time to visit Alamo is typically April – October, with trip comfort peaking in June (9.2/10). Alamo is warmest in August, when daily highs average 82°F (28°C), and coolest in December, when lows fall to about 43°F (6°C). The wettest month is typically January and the driest is July; the year sees roughly 19 in (479 mm) of precipitation.

• Best time to visitApril – October — comfort peaks in June (9.2/10)
• Warmest monthAugust — average high 82°F (28°C)
• Coolest monthDecember — average low 43°F (6°C)
• Wettest monthJanuary (4.1 in (105 mm))
• Driest monthJuly (0.0 in (0 mm))
• Annual precipitation19 in (479 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromMt Diablo Junction, 10 km away (1952-2026)