Pomona

What is the climate like in Pomona?

The best time to visit Pomona is typically April – November, with trip comfort peaking in July (9.3/10). Pomona is warmest in August, when daily highs average 89°F (31°C), and coolest in January, when lows fall to about 45°F (7°C). The wettest month is typically January and the driest is July; the year sees roughly 18 in (452 mm) of precipitation.

• Best time to visitApril – November — comfort peaks in July (9.3/10)
• Warmest monthAugust — average high 89°F (31°C)
• Coolest monthJanuary — average low 45°F (7°C)
• Wettest monthJanuary (3.7 in (95 mm))
• Driest monthJuly (0.0 in (1 mm))
• Annual precipitation18 in (452 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromClaremont California, 10 km away (1998-2026)