Climate almanac
San Ignacio Río Muerto
Sonora, Mexico · 27.42°, -110.24°
What is the climate like in San Ignacio Río Muerto?
The best time to visit San Ignacio Río Muerto is typically October – June, with trip comfort peaking in May (9.5/10). San Ignacio Río Muerto is warmest in July, when daily highs average 101°F (38°C), and coolest in January, when lows fall to about 50°F (10°C). The wettest month is typically September and the driest is May; the year sees roughly 8.7 in (222 mm) of precipitation.
- Best time to visitOctober – June — comfort peaks in May (9.5/10)
- Warmest monthJuly — average high 101°F (38°C)
- Coolest monthJanuary — average low 50°F (10°C)
- Wettest monthSeptember (2.5 in (64 mm))
- Driest monthMay (0.0 in (0 mm))
- Annual precipitation8.7 in (222 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromCiudad Obregon Son., 31 km away (1979-2025)