Cape Girardeau (MO) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Cape Girardeau, Missouri, United States of America. These averages rely on historical data collected over 30 years, from 1990 to 2020. Now, let's break down all the details for a clearer picture.

Cape Girardeau experiences significant rain/snowfall throughout the year, averaging 1292 mm (51 in) of precipitation annually.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

Cape Girardeau experiences moderate seasonal variation in rainfall, with monthly averages ranging from 149 mm (5.9 in) in March, the wettest month, and 81 mm (3.2 in) in January, the driest month.

March, the wettest month, has a maximum daytime temperature of 15°C (59°F). During the driest month January you can expect a temperature of 6°C (43°F). For more detailed insights into the city's temperatures, visit our Cape Girardeau Temperature page.

Cape Girardeau's average annual precipitation is 1292 mm (51 in). Let's compare this to some popular worldwide tourist destinations:

Boston, USA, experiences 1238 mm (49 in) of annual precipitation, including significant snowfall during the winter.

Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.

In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.

Singapore, situated near the equator, gets 2581 mm (102 in) of rainfall annually, with no distinct dry season and consistent monthly precipitation.

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

The proximity of a location to a large body of water can significantly affect its rainfall patterns:

• Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
• Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.

• "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
• The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
• The greatest snowfall recorded was on Mt. Rainier, Washington State, USA, over 31.5 meters (103 feet) fell during the winter of 1972.

For more detailed information about Cape Girardeau (MO)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Cape Girardeau (MO) Climate page.