Collinsville

What is the climate like in Collinsville?

The best time to visit Collinsville is typically June – July, with trip comfort peaking in June (6.9/10). Collinsville is warmest in July, when daily highs average 88°F (31°C), and coolest in January, when lows fall to about 32°F (0°C). The wettest month is typically May and the driest is November; the year sees roughly 46 in (1167 mm) of precipitation.

• Best time to visitJune – July — comfort peaks in June (6.9/10)
• Warmest monthJuly — average high 88°F (31°C)
• Coolest monthJanuary — average low 32°F (0°C)
• Wettest monthMay (5.2 in (133 mm))
• Driest monthNovember (2.7 in (69 mm))
• Annual precipitation46 in (1167 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromMartinsville Fltr Plt, 5 km away (1937-2026)