Climate almanac
Casa Grande
Arizona, United States · 32.88°, -111.76°
What is the climate like in Casa Grande?
The best time to visit Casa Grande is typically September – June, with trip comfort peaking in May (8.9/10). Casa Grande is warmest in July, when daily highs average 107°F (42°C), and coolest in January, when lows fall to about 43°F (6°C). The wettest month is typically August and the driest is May; the year sees roughly 8.2 in (208 mm) of precipitation.
- Best time to visitSeptember – June — comfort peaks in May (8.9/10)
- Warmest monthJuly — average high 107°F (42°C)
- Coolest monthJanuary — average low 43°F (6°C)
- Wettest monthAugust (1.1 in (29 mm))
- Driest monthMay (0.1 in (2 mm))
- Annual precipitation8.2 in (208 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromCasa Grande, 4 km away (1903-2026)