Hannibal

What is the climate like in Hannibal?

The best time to visit Hannibal is typically August – October, with trip comfort peaking in September (7.3/10). Hannibal is warmest in July, when daily highs average 87°F (31°C), and coolest in January, when lows fall to about 23°F (-5°C). The wettest month is typically May and the driest is February; the year sees roughly 41 in (1045 mm) of precipitation.

• Best time to visitAugust – October — comfort peaks in September (7.3/10)
• Warmest monthJuly — average high 87°F (31°C)
• Coolest monthJanuary — average low 23°F (-5°C)
• Wettest monthMay (4.8 in (122 mm))
• Driest monthFebruary (2.1 in (53 mm))
• Annual precipitation41 in (1045 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromHannibal Wtr Wks, 2 km away (1933-2026)