Hannibal (MO) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Hannibal.
Climate overview of Hannibal
The climate in Hannibal, Missouri, United States of America, is marked by large temperature swings across the seasons, ranging from 30°C (86°F) in July to 2°C (36°F) in January.
The city has a wet climate, receiving around 1097 mm (43 in) of rain/snowfall per year. June is the wettest month.
Hannibal Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Hannibal — and find the best time to visit.
Monthly Temperature in Hannibal
In Hannibal, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a very warm 30°C (86°F) in July to a chilly 2°C (36°F) in January.
Nighttime temperatures range from 20°C (68°F) in July to -7°C (19°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Hannibal
Hannibal experiences significant rain/snowfall throughout the year, averaging 1097 mm (43 in) of precipitation annually. The seasons in Hannibal bring significant changes in precipitation. The wettest month, June, receives high rainfall, with an average of 148 mm (5.8 in) of precipitation. This rainfall is distributed across 13 rainy days.
In contrast, the driest month, January, experiences much less snow/rainfall, totaling 38 mm (1.5 in) over 7 snowy/rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Hannibal Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Hannibal
Frequently asked questions about the climate in Hannibal
What is the best time to visit Hannibal?
May, June, September and October typically offer the most optimal weather in Hannibal. In contrast, January, February and December tend to have less optimal conditions.
What temperatures can I expect in Hannibal?
Daytime highs range from 2°C (36°F) in January to 30°C (86°F) in July. Nighttime lows range from -7°C (19°F) to 20°C (68°F). Temperatures vary considerably through the year.
How much rain does Hannibal get?
Annual rainfall is around 1097 mm (43 in). June is the wettest month with 148 mm (5.8 in), while January is the driest with 38 mm (1.5 in).
Hannibal 3-Day Forecast
Hannibal (MO) 3-Day Forecast
Hannibal on the map
Hannibal is highlighted — select any city to see its climate.
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