Monticello

What is the climate like in Monticello?

The best time to visit Monticello is typically August – September, with trip comfort peaking in September (7.5/10). Monticello is warmest in July, when daily highs average 85°F (29°C), and coolest in January, when lows fall to about 23°F (-5°C). The wettest month is typically May and the driest is September; the year sees roughly 42 in (1057 mm) of precipitation.

• Best time to visitAugust – September — comfort peaks in September (7.5/10)
• Warmest monthJuly — average high 85°F (29°C)
• Coolest monthJanuary — average low 23°F (-5°C)
• Wettest monthMay (5.1 in (129 mm))
• Driest monthSeptember (2.4 in (61 mm))
• Annual precipitation42 in (1057 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromChalmers 5 W, 18 km away (2008-2026)