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April Weather in Hannibal, United States

Last updated: June 24, 2025

In April, the average temperature in Hannibal, United States hovers around 7°C (45°F). Expect a chillier minimum of -5°C (24°F), while the mercury might rise to a comfortable maximum of 26°C (79°F). With 121 mm (4.8 in) of precipitation spread over 15 days, don't forget your umbrella! Additionally, the average humidity is a muggy 88%, creating a uniquely atmospheric environment.

April Temperature in Hannibal

In April in Hannibal, the average temperature is 7°C (45°F), with maximums reaching 26°C (79°F) and minimums dipping as low as -5°C (24°F). Be prepared for a range of weather conditions while exploring this destination!

April Weather in Hannibal: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Hannibal, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hannibal, April typically has an average temperature of 7°C (45°F), with highs reaching up to 26°C (79°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec272935455766737265554033
Data source: Temperature data for Hannibal generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Hannibal

In Hannibal in April, the precipitation amount is 121 mm (4.8 in) during a period of 15 days.

April Precipitation Trends in Hannibal

The chart displays monthly precipitation patterns in Hannibal, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Hannibal, April typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec9697871211219318512390169113116
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Hannibal

In Hannibal in April humidity is 88%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable as you navigate through a heavy, thick atmosphere that clings to your skin.

April Average Humidity in Hannibal

This chart illustrates the average monthly humidity levels in Hannibal, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Hannibal is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Hannibal

In Hannibal in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Hannibal.

Maximum UV Index Levels in Hannibal for April

The chart shows the monthly maximum UV Index (UVI) for Hannibal in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in Hannibal typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3468910997632
Data source: Hannibal April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How April Weather in Hannibal Compares to Other Months

Weather in Hannibal varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Hannibal, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Hannibal, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)96 mm (3.8 inches)90%moderate
February Weather-2°C (29°F)96 mm (3.8 inches)90%moderate
March Weather1°C (35°F)87 mm (3.4 inches)87%high
April Weather7°C (45°F)121 mm (4.8 inches)88%very high
May Weather14°C (57°F)121 mm (4.8 inches)82%very high
June Weather19°C (66°F)93 mm (3.7 inches)79%very high
July Weather23°C (73°F)185 mm (7.3 inches)78%very high
August Weather22°C (72°F)123 mm (4.8 inches)76%very high
September Weather18°C (65°F)90 mm (3.5 inches)78%high
October Weather13°C (55°F)169 mm (6.7 inches)84%high
November Weather5°C (41°F)113 mm (4.5 inches)89%moderate
December Weather0°C (33°F)116 mm (4.5 inches)86%low

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