Climate almanac
Hilmar-Irwin
California, United States · 37.40°, -120.85°
What is the climate like in Hilmar-Irwin?
The best time to visit Hilmar-Irwin is typically April – October, with trip comfort peaking in September (9.4/10). Hilmar-Irwin is warmest in July, when daily highs average 100°F (38°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 (477 mm) of precipitation.
- Best time to visitApril – October — comfort peaks in September (9.4/10)
- Warmest monthJuly — average high 100°F (38°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 (477 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromTurlock #2, 11 km away (1894-2026)