Climate almanac
Milliken
Colorado, United States · 40.33°, -104.86°
What is the climate like in Milliken?
The best time to visit Milliken is typically June – October, with trip comfort peaking in September (8.8/10). Milliken is warmest in July, when daily highs average 93°F (34°C), and coolest in January, when lows fall to about 21°F (-6°C). The wettest month is typically May and the driest is December; the year sees roughly 14 in (360 mm) of precipitation.
- Best time to visitJune – October — comfort peaks in September (8.8/10)
- Warmest monthJuly — average high 93°F (34°C)
- Coolest monthJanuary — average low 21°F (-6°C)
- Wettest monthMay (3.3 in (83 mm))
- Driest monthDecember (0.4 in (11 mm))
- Annual precipitation14 in (360 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromGreeley Unc, 16 km away (1967-2026)